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''[[Euphorbia]]'' is a highly diverse [[plant]] [[genus]], comprising some 2,160 currently accepted taxa. [http://test.tropicos.org/Name.aspx?nameid=40007100].

This is an alphabetical '''list of the ''Euphorbia'' species''' and notable [[intraspecific]] [[taxa]].

The list includes the former (and never generally accepted) genus ''Chamaesyce'', as well as the related genera ''Elaeophorbia'', ''Endadenium'', ''Monadenium'', ''Synadenium'' and ''Pedilanthus'' which according to recent [[DNA sequence]]-based [[phylogenetic]] studies are all nested within ''Euphorbia'' <ref name = dnaphylogeny>Steinmann & Porter (2002), Steinmann (2003), Bruyns ''et al.'' (2006)</ref>

Noticeably [[succulent]] plants are marked by (s).
{{compactTOC5}}

==A==
{{compactTOC2}}
*''[[Euphorbia aaronrossii]]'' [[A.H.Holmgren]] & [[N.H.Holmgren]] 1988 – [[Marble Canyon Spurge]]
*''[[Euphorbia abchazica]]'' [[Woronow]] 1912
*''[[Euphorbia abdelkuri]]'' [[Balf.f.]] 1901 (s)
*''[[Euphorbia abdita]]'' ([[Burch]]) [[Radcl.-Sm.]] 1971
*''[[Euphorbia abdulghafooriana]]'' [[Abedin]] 2005
*''[[Euphorbia abramsiana]]'' [[L.C.Wheeler]] 1934
*''[[Euphorbia abyssinica]]'' [[J.F.Gmel.]] 1791 (s)
*''[[Euphorbia acalyphoides]]'' [[Hochst.]] ex [[Boiss.]] 1862
**''Euphorbia acalyphoides'' ssp. ''acalyphoides''
**''Euphorbia acalyphoides'' ssp. ''cicatricosa'' [[S.Carter]] 1984
*''[[Euphorbia acanthodes]]'' [[Akhani]] 2004 (s)
*''[[Euphorbia acanthothamnos]]'' [[Heldr.]] & [[Sart.]] 1859 – [[Greek Spiny Spurge]] (s)
*''[[Euphorbia acerensis]]'' [[Boiss.]] 1862
*''[[Euphorbia acervata]]'' [[S.Carter]] 2000 (s)
*''[[Euphorbia actinoclada]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia aculeata]]'' [[Peter Forsskål|Forssk.]] 1775 (s)
*''[[Euphorbia adenochila]]'' [[S.Carter]] 1990 (s)
*''[[Euphorbia adenochlora]]'' [[Charles Jacques Édouard Morren|C.Morren]] & [[Joseph Decaisne|Decne.]] 1863
*''[[Euphorbia adenopoda]]'' [[Baillon]] 1905 (s)
**''Euphorbia adenopoda'' ssp. ''adenopoda'' (s)
**''Euphorbia adenopoda'' ssp. ''canescens'' ([[Proctor]]) [[Oudejans]] 1992 (s)
**''Euphorbia adenopoda'' ssp. ''gundlachii'' ([[Urb.]]) [[Oudejans]] 1989 (s)
**''Euphorbia adenopoda'' ssp. ''pergamena'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989 (s)
*''[[Euphorbia adenoptera]]'' [[Bertol.]] 1844
*''[[Euphorbia adiantoides]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788
*''[[Euphorbia adjurana]]'' [[P.R.O.Bally]] & [[S.Carter]] 1982 (s)
*''[[Euphorbia aellenii]]'' [[Rech.f.]] 1951
*''[[Euphorbia aequoris]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia aeruginosa]]'' [[Schweick.]] 1935 (s)
*''[[Euphorbia aggregata]]'' [[A.Berger]] 1907 (s)
**''Euphorbia aggregata'' var. ''aggregata'' (s)
**''Euphorbia aggregata'' var. ''alternicolor'' ([[N.E.Br.]]) [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia agowensis]]'' [[Hochst.]] ex [[Boiss.]] 1862 (s)
**''Euphorbia agowensis'' var. ''agowensis'' (s)
**''Euphorbia agowensis'' var. ''pseudoholstii'' ([[Ferdinand Albin Pax|Pax]]) [[P.R.O.Bally]] & [[S.Carter]] 1984 (s)
*''[[Euphorbia agraria]]'' [[M.Bieb.]] 1808 – [[Urban Spurge]]
**''Euphorbia agraria'' var. ''agraria''
**''Euphorbia agraria'' var. ''euboea'' ([[Halácsy]]) [[Hayek]]
**''Euphorbia agraria'' var. ''subhastata'' ([[De Vis]]) [[August Grisebach|Griseb.]] 1877
*''[[Euphorbia akenocarpa]]'' [[Guss.]] 1821
*''[[Euphorbia alaica]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia alainii]]'' [[Oudejans]] 1989
*''[[Euphorbia alata]]'' [[Hook.]] 1844 (s)
*''[[Euphorbia alatavica]]'' [[Boiss.]] 1860
*''[[Euphorbia alatocaulis]]'' [[V.W.Steinm.]] & [[Felger]] 1997
*''[[Euphorbia albanica]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia albertensis]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia albiflora]]'' [[Taub.]] 1895
*''[[Euphorbia albipollinifera]]'' [[L.C.Leach]] 1985 (s)
*''Euphorbia albomarginata'' – [[Rattlesnake Weed]], White-margined Sandmat
*''[[Euphorbia alcicornis]]'' [[Baker]] 1966 (s)
*''[[Euphorbia aleppica]]'' [[Carolus Linnaeus|L.]] 1753
**''Euphorbia aleppica'' var. ''aleppica''
**''Euphorbia aleppica'' var. ''prostrata'' [[Kasapligil]] 1966
*''[[Euphorbia alfredii]]'' [[Rauh]] 1987 (s)
*''[[Euphorbia allocarpa]]'' [[S.Carter]] 1984
*''[[Euphorbia alpina]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1830
**''Euphorbia alpina'' var. ''alpina''
**''Euphorbia alpina'' var. ''rupicola'' [[Baikov]] 2001
*''[[Euphorbia alsiniflora]]'' [[Baillon]] 1866
*''[[Euphorbia alsinifolia]]'' [[Boiss.]] 1860
*''[[Euphorbia alsinoides]]'' [[Miq.]] 1853
*''[[Euphorbia alta]]'' [[Norton]] 1899
*''[[Euphorbia altaica]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1830
**''Euphorbia altaica'' var. ''altaica''
**''Euphorbia altaica'' var. ''pilosa'' [[Stschegl.]] 1879
**''Euphorbia altaica'' var. ''sajanensis'' [[Boiss.]] 1862
*''[[Euphorbia altissima]]'' [[Boiss.]] 1844
**''Euphorbia altissima'' var. ''altissima''
**''Euphorbia altissima'' var. ''glabrescens'' [[M.S.Khan]] 1964
*''[[Euphorbia altotibetica]]'' [[Paulsen]] ex [[Ostenf.]] & [[Paulsen]] 1922
*''[[Euphorbia amandii]]'' [[Oudejans]] 1989
*''[[Euphorbia amarifontana]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia ambacensis]]'' [[N.E.Br.]] 1913
*''[[Euphorbia ambarivatoensis]]'' [[Rauh]] & [[Bard.-Vauc.]] 1999 (s)
*''[[Euphorbia ambovombensis]]'' [[Rauh]] & [[Razaf.]] 1987 (s)
**''Euphorbia ambovombensis'' var. ''ambovombensis'' (s)
**''Euphorbia ambovombensis'' var. ''ambatomenaensis'' [[Rebmann]] 2003 (s)
*''[[Euphorbia ambroseae]]'' [[L.C.Leach]] 1964 (s)
**''Euphorbia ambroseae'' var. ''ambroseae'' (s)
**''Euphorbia ambroseae'' var. ''spinosa'' [[L.C.Leach]] 1977 (s)
*''[[Euphorbia ambukensis]]'' [[Stepanov]] 1994
*''[[Euphorbia amicorum]]'' [[S.Carter]] 2001 (s)
*''[[Euphorbia ammak]]'' [[Schweinf.]] 1899 (s)
*''[[Euphorbia ammatotricha]]'' [[Boiss.]] 1860
*''[[Euphorbia ammophila]]'' [[S.Carter]] & [[Dioli]] 2005
*''[[Euphorbia amphimalaca]]'' [[Standl.]] 1860
*''[[Euphorbia amplexicaulis]]'' [[Hook.f.]] 1847
*''[[Euphorbia ampliphylla]]'' [[Ferdinand Albin Pax|Pax]] 1897 (s)
*''Euphorbia amygdaloides'' [[Carolus Linnaeus|L.]] 1753 – [[Wood Spurge]]
**''Euphorbia amygdaloides'' ssp. ''amygdaloides''
***''Euphorbia amygdaloides'' ssp. ''amygdaloides'' var. ''amygdaloides''
***''Euphorbia amygdaloides'' ssp. ''amygdaloides'' var. ''ligulata'' ([[Chaub.]]) [[Boiss.]] 1862 
**''Euphorbia amygdaloides'' ssp. ''arbuscula'' [[Meusel]] 1969
**''Euphorbia amygdaloides'' ssp. ''heldreichii'' ([[Orph.]] ex [[Boiss.]]) [[Aldén]] 1986
**''Euphorbia amygdaloides'' ssp. ''robbiae'' ([[Turrill]]) [[Radcl.-Sm.]] 1976
**''Euphorbia amygdaloides'' ssp. ''semiperfoliata'' ([[Viv.]]) [[Radcl.-Sm.]] 1968
*''[[Euphorbia anacampseros]]'' [[Boiss.]] 1788
**''Euphorbia anacampseros'' var. ''anacampseros''
**''Euphorbia anacampseros'' var. ''tmolea'' [[M.S.Khan]] 1964
*''[[Euphorbia anachoreta]]'' [[Svent.]] 1969
*''[[Euphorbia analalavensis]]'' [[Leandri]]1966 (s)
*''[[Euphorbia analamerae]]'' [[Leandri]]1945
*''[[Euphorbia analavelonensis]]'' [[Rauh]] & [[Mangelsdorff]] 2000 (s)
*''[[Euphorbia andrachnoides]]'' [[Schrenk]] 1844
*''[[Euphorbia androsaemifolia]]'' [[Carl Ludwig Willdenow|Willd.]] ex [[Schltdl.]] 1813
*''[[Euphorbia angrae]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia angularis]]'' [[Klotzsch]] 1862 (s)
*''[[Euphorbia angulata]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1789
*''[[Euphorbia angusta]]'' [[Engelm.]] 1858 (s)
*''[[Euphorbia angustiflora]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
*''[[Euphorbia anisopetala]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia ankaranae]]'' [[Leandri]] 1945 (s)
*''[[Euphorbia ankarensis]]'' [[Boiteau]] 1942 (s)
*''[[Euphorbia ankazobensis]]'' [[Rauh]] & [[Hofstätter]] 2000 (s)
*''[[Euphorbia annamarieae]]'' [[Rauh]] 1991 (s)
*''[[Euphorbia anoplia]]'' [[Stapf]] 1923 (s)
*''[[Euphorbia anthonyi]]'' [[Brandegee]] 1899 (= ''Chamaesyce anthonyi'')
*''[[Euphorbia anthula]]'' [[Lavrent.]] & [[Papan.]] 1978
*''[[Euphorbia antilibanotica]]'' [[Mouterde]] 1970
*''[[Euphorbia antiquorum]]'' [[Carolus Linnaeus|L.]] 1753 (s)
*''Euphorbia antisyphilitica'' – [[Candelilla]], "[[wax plant]]" (s)
*''[[Euphorbia antonii]]'' [[Oudejans]] 1989
*''[[Euphorbia antso]]'' [[Denis]] 1921 (s)
*''[[Euphorbia anychioides]]'' [[Boiss.]] 1860
*''[[Euphorbia apatzingana]]'' [[McVaugh]] 1961
*''[[Euphorbia aphylla]]'' [[Brouss.]] ex [[Carl Ludwig Willdenow|Willd.]] 1809 – [[Leafless Spurge]], [[tolda]] (s)
*''[[Euphorbia apicata]]'' [[L.C.Wheeler]] 1936
*''[[Euphorbia apios]]'' [[Carolus Linnaeus|L.]] 1753
*''[[Euphorbia apocynoides]]'' [[Klotzsch]] 1853
*''[[Euphorbia appariciana]]'' [[Rizzini]] 1989
*''[[Euphorbia appendiculata]]'' [[P.R.O.Bally]] & [[S.Carter]] ex [[S.Carter]] 1988
*''[[Euphorbia applanata]]'' [[Thulin]] & [[Al-Gifri]] 1995
*''[[Euphorbia aprica]]'' [[Baillon]] 1886 (s)
*''[[Euphorbia apurimacensis]]'' [[Croizat]] 1946
*''[[Euphorbia arabica]]'' [[Hochst.]] & [[Steud.]] ex [[T.Anderson]] 1860
*''[[Euphorbia arabicoides]]'' [[N.E.Br.]] 1913
*''[[Euphorbia arahaka]]'' [[H.Poisson]] 1966 (s)
*''[[Euphorbia araucana]]'' [[Rodolfo Amando Philippi|Phil.]] 1895
*''[[Euphorbia arbuscula]]'' [[Balf.fil.]] 1883 (s)
**''Euphorbia arbuscula'' var. ''arbuscula'' (s)
**''Euphorbia arbuscula'' var. ''Montana'' [[Balf.fil.]] 1883 (s)
*''[[Euphorbia arceuthobioides]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia ardonensis]]'' [[Galushko]] 1976
*''[[Euphorbia arenaria]]'' [[Carl Sigismund Kunth|Kunth]] 1817
*''[[Euphorbia arenarioides]]'' [[Gagnep.]] 1921
*''[[Euphorbia argillosa]]'' [[Chodat]] & [[E.Hassler]] 1905
*''[[Euphorbia arguta]]'' [[Joseph Banks|Banks]] & [[Sol.]] 1794
**''Euphorbia arguta'' var. ''arguta''
**''Euphorbia arguta'' var. ''dasycarpa'' [[Plitmann]] 1972
*''[[Euphorbia arida]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia ariensis]]'' [[Carl Sigismund Kunth|Kunth]] 1817
**''Euphorbia ariensis'' var. ''ariensis''
**''Euphorbia ariensis'' var. ''villicaulis'' [[Fernald]] 1907
*''[[Euphorbia aristata]]'' [[Schmalh.]] 1892
*''[[Euphorbia arizonica]]'' [[Engelm.]] 1858
*''[[Euphorbia armena]]'' [[Prokh.]] 1949
*''[[Euphorbia armourii]]'' [[Millsp.]] 1895
*''[[Euphorbia armstrongiana]]'' [[Boiss.]] 1862
*''[[Euphorbia arnottiana]]'' [[Endl.]] 1836
*''[[Euphorbia arrecta]]'' [[N.E.Br.]] ex [[R.E.Fr.]] 1914 (s)
*''[[Euphorbia arteagae]]'' [[W.R.Buck]] & [[Huft]] 1977 (s)
*''[[Euphorbia articulata]]'' [[Johannes Burman|Burm.]] 1760 (s)
*''[[Euphorbia artifolia]]'' [[N.E.Br.]] 1915
*''[[Euphorbia arundelana]]'' [[Bartlett]] 1911
*''[[Euphorbia arvalis]]'' [[Boiss.]] & [[Heldr.]] ex [[Boiss.]] 1853
**''Euphorbia arvalis'' ssp. ''arvalis''
**''Euphorbia arvalis'' ssp. ''longistyla'' ([[Litard.]] & [[Maire]]) [[Molero]], [[Rovira]] & [[J.Vicens]] 1996
*''[[Euphorbia asclepiadea]]'' [[Milne-Redh.]] 1951 (s)
*''[[Euphorbia aserbajdzhanica]]'' [[Bordz.]] 1928
*''[[Euphorbia aspericaulis]]'' [[Ferdinand Albin Pax|Pax]] 1899 (s)
*''[[Euphorbia asthenacantha]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia astroites]]'' [[Friedrich Ernst Ludwig von Fischer|Fisch.]] & [[C.A.Mey.]] 1845
*''[[Euphorbia astrophora]]'' [[Marx]] 1996 (s)
*''[[Euphorbia astyla]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia atlantis]]'' [[Maire]] 1941
**''Euphorbia atlantis'' var. ''atlantis''
**''Euphorbia atlantis'' var. ''leiocarpa'' ([[Boiss.]]) [[Oudejans]] 1992
**''Euphorbia atlantis'' var. ''major'' ([[Boiss.]]) [[Oudejans]] 1992
*''[[Euphorbia atoto]]'' [[Georg Forster|G.Forst.]] 1786 (s)
*''[[Euphorbia atrispina]]'' [[N.E.Br.]] 1915 (s)
**''Euphorbia atrispina'' var. ''atrispina'' (s)
**''Euphorbia atrispina'' var. ''viridis'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia atrocarmesina]]'' [[L.C.Leach]] 1968 (s)
**''Euphorbia atrocarmesina'' ssp. ''arborea'' [[L.C.Leach]] 1977 (s)
**''Euphorbia atrocarmesina'' ssp. ''atrocarmesina'' (s)
*''[[Euphorbia atrococca]]'' [[A.Heller]] 1897
*''[[Euphorbia atroflora]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia atropurpurea]]'' [[Brouss.]] ex [[Carl Ludwig Willdenow|Willd.]] 1809 (s)
**''Euphorbia atropurpurea'' var. ''atropurpurea'' (s)
***''Euphorbia atropurpurea'' var. ''atropurpurea'' f. ''atropurpurea'' (s)
***''Euphorbia atropurpurea'' var. ''atropurpurea'' f. ''lutea'' [[A.Santos]] 1988 (s)
**''Euphorbia atropurpurea'' var. ''modesta'' [[Svent.]] 1960 (s)
*''[[Euphorbia atrox]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia attastoma]]'' [[Rizzini]] 1989 (s)
**''Euphorbia attastoma'' var. ''attastoma'' (s)
**''Euphorbia attastoma'' var. ''xanthochlora'' [[Rizzini]] 1989 (s)
*''[[Euphorbia aucheri]]'' [[Boiss.]] 1846
*''[[Euphorbia aulacosperma]]'' [[Boiss.]] 1853
*''[[Euphorbia aureoviridiflora]]'' ([[Rauh]]) [[Rauh]] 1993 (s)
*''[[Euphorbia auricularia]]'' [[Boiss.]] 1860
*''[[Euphorbia australis]]'' [[Boiss.]] 1860
*''[[Euphorbia austriaca]]'' [[A.Kern.]] 1875
*''[[Euphorbia austroanatolica]]'' [[Hub.Mor.]] & [[M.S.Khan]] ex [[M.S.Khan]] 1964
*''[[Euphorbia avasmontana]]'' [[Dinter]] 1928 (s)
**''Euphorbia avasmontana'' var. ''avasmontana'' (s)
**''Euphorbia avasmontana'' var. ''sagittaria'' ([[Marloth]]) [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia awashensis]]'' [[M.G.Gilbert]] 1993 (s)
*''[[Euphorbia azorica]]'' [[Hochst.]] ex [[Seub.]] 1844

==B==
{{compactTOC2}}
*''[[Euphorbia baga]]'' [[A.Chev.]] 1933 (s)
**''[[Euphorbia baga var. baga]]'' (s)
**''[[Euphorbia baga var. parviflora]]'' [[L.E.Newton]] 1987 (s)
*''[[Euphorbia bahiensis]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia baioensis]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia balakrishnanii]]'' [[Binojk.]] & [[Gopalan]] 1998
*''[[Euphorbia balearica]]'' ([[Willk.]]) [[A.M.Romo]] 1994
*''[[Euphorbia baleensis]]'' [[M.G.Gilbert]] 1993
*''[[Euphorbia balbisii]]'' [[Boiss.]] 1860
*''[[Euphorbia baliola]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia ballyana]]'' [[Rauh]] 1966 (s)
*''[[Euphorbia ballyi]]'' [[S.Carter]] 1963 (s)
*''[[Euphorbia balsamifera]]'' [[Ait.]] 1789 (s)
**''[[Euphorbia balsamifera ssp. adenensis]]'' ([[Deflers]]) [[P.R.O.Bally]] 1974 (s)
**''[[Euphorbia balsamifera ssp. balsamifera]]'' (s)
*''[[Euphorbia banae]]'' [[Rauh]] 1993 (s)
*''[[Euphorbia baradii]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia barbicarina]]'' ([[Millsp.]]) [[Standl.]] 1930
*''[[Euphorbia barbicollis]]'' [[P.R.O.Bally]] 1965 (s)
*''[[Euphorbia bariensis]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia barkeri]]'' [[Urb.]] & [[Erik Leonard Ekman|Ekman]] ex [[Urb.]] 1926
*''[[Euphorbia barnardii]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia barnesii]]'' ([[Millsp.]]) [[Oudejans]] 1989
*''[[Euphorbia barnhartii]]'' [[Croizat]] 1934 (s)
*''[[Euphorbia barrelieri]]'' [[Gaetano Savi|Savi]] 1808
*''[[Euphorbia bartolomaei]]'' [[Edward Lee Greene|Greene]] 1889
*''[[Euphorbia basarabica]]'' [[Prodan]] 1930
*''[[Euphorbia baselicis]]'' [[Ten.]] 1811
*''[[Euphorbia baueri]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia baumii]]'' [[Ferdinand Albin Pax|Pax]] 1908
*''[[Euphorbia baxanica]]'' [[Galushko]] 1970
*''[[Euphorbia bayeri]]'' [[L.C.Leach]] 1988 (s)
*''[[Euphorbia baylissii]]'' [[L.C.Leach]] 1964 (s)
*''[[Euphorbia beamanii]]'' [[M.C.Johnst.]] 1975
*''[[Euphorbia beharensis]]'' [[Leandri]] 1946 (s)
**''[[Euphorbia beharensis var. adpressifolia]]'' [[Rauh]] 1999 (s)
**''[[Euphorbia beharensis var. beharensis]]'' (s)
**''[[Euphorbia beharensis var. gullemetii]]'' ([[Ursch]] & [[Leandri]]) [[Rauh]] 1999 (s)
**''[[Euphorbia beharensis var. squarrosa]]'' [[Rauh]] 1999 (s)
**''[[Euphorbia beharensis var. truncata]]'' [[Rauh]] 1999 (s)
*''[[Euphorbia beillei]]'' [[A.Chev.]] 1933 (s)
*''[[Euphorbia bellica]]'' [[Hiern]] 1900
*''[[Euphorbia bemaharaensis]]'' [[Rauh]] & [[Mangelsdorff]] 1999 (s)
*''[[Euphorbia benoisti]]'' [[Leandri]] 1974
*''[[Euphorbia benthami]]'' [[Hiern]] 1900
*''[[Euphorbia bergeri]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia bergii]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia berohohae]]'' [[Rauh]] & [[Hofstätter]] 1995 (s)
*''[[Euphorbia berotica]]'' [[N.E.Br.]] 1912 (s)
*''[[Euphorbia bertemariae]]'' [[Bisseret]] & [[Dioli]] 2006 (s)
*''[[Euphorbia berteroana]]'' [[Balb.]] ex [[Spreng.]] 1826
*''[[Euphorbia berthelotii]]'' [[Carl Bolle|Bolle]] ex [[Boiss.]] 1862 (s)
*''[[Euphorbia berythae]]'' [[Boiss.]] & [[Blanche]] ex [[Boiss.]] 1859
*''[[Euphorbia bessarabica]]'' [[Klokov]] 1955
*''[[Euphorbia besseri]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia betacea]]'' [[Baillon]] 1886 (s)
*''[[Euphorbia betulicortex]]'' [[M.G.Gilbert]] 1990 (s)
*''[[Euphorbia bevilaniensis]]'' [[Croizat]] 1934
*''[[Euphorbia biaculeata]]'' [[Denis]] 1921 (s)
*''[[Euphorbia bianoensis]]'' ([[Malaisse]] & [[Lecron]]) [[Bruyns]] 2006 (s) syn. Monadenium bianoense
*''[[Euphorbia bicapitata]]'' [[Brandegee]] 1917
*''[[Euphorbia bicolor]]'' [[Engelm.]] & [[A.Gray]] 1845 - Snow-on-the-prairie
*''[[Euphorbia bicompacta]]'' [[Bruyns]] 2006 (s) syn. Synadenium compactum
**''[[Euphorbia bicompacta var. bicompacta]]'' (s) syn. Synadenium compactum var. compactum
**''[[Euphorbia bicompacta var. rubra]]'' ([[S.Carter]]) [[Bruyns]] 2006 (s) syn. Synadenium compactum var. rubrum
*''[[Euphorbia biconvexa]]'' [[Domin]] 1927
*''[[Euphorbia bifida]]''[[Hook.]] & [[Arn.]] 1837
*''[[Euphorbia bifurcata]]'' [[Engelm.]] 1858 - Forked spurge
*''[[Euphorbia biglandulosa]]'' [[Desf.]] 1808 - Gopher plant
*''[[Euphorbia biharamulensis]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia bilobata]]'' [[Engelm.]] 1858 - Blackseed spurge
*''[[Euphorbia biramensis]]'' [[Urb.]] 1930
*''[[Euphorbia biselegans]]'' [[Bruyns]] 2006 (s) syn. Monadenium elegans
*''[[Euphorbia bisellenbeckii]]'' [[Bruyns]] 2006 (s) syn. Monadenium ellenbecki
*''[[Euphorbia bisglobosa]]'' [[Bruyns]] 2006 (s) syn. Monadenium globosum
*''[[Euphorbia bitataensis]]'' [[M.G.Gilbert]] 1993 (s)
*''[[Euphorbia biumbellata]]'' [[Poir.]] 1789 (s)
*''[[Euphorbia biuncialis]]'' [[McVaugh]] 1961
*''[[Euphorbia bivonae]]'' [[Steud.]] 1841 (s)
**''[[Euphorbia bivonae ssp. bivonae]]'' (s)
**''[[Euphorbia bivonae ssp. tunetana]]'' [[Murb.]] 1899 (s)
*''[[Euphorbia blatteri]]'' [[Oudejans]] 1989
*''[[Euphorbia blepharophylla]]'' [[C.A.Mey.]] 1834 (s)
*''[[Euphorbia bodenghieniae]]'' ([[Malaisse]] & [[Lecron]]) [[Bruyns]] 2006 (s) syn. Monadenium bodenghieniae
*''[[Euphorbia blodgettii]]'' [[Engelm.]] ex [[Hitchc.]] 1893
*''[[Euphorbia boerrhavifolia]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia boetica]]'' [[Boiss.]] 1860
*''[[Euphorbia boinensis]]'' [[Denis]] ex [[Humbert]] & [[Leandri]] 1966 (s)
*''[[Euphorbia boissieri]]'' [[Baillon]] 1860 (s)
*''[[Euphorbia boissieriana]]'' ([[Woronow]]) [[Prokh.]] 1949
*''[[Euphorbia boiteaui]]'' [[Leandri]] 1946(s)
*''[[Euphorbia boivinii]]'' [[Boiss.]] 1862
*''[[Euphorbia boliviana]]'' [[Rusby]] 1946
*''[[Euphorbia bolosii]]'' ([[Molero]] & [[Rovira]]) [[Molero]] & [[Rovira]] 1996
*''[[Euphorbia bolusii]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia bombensis]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1760
*''[[Euphorbia bongensis]]'' [[Kotschy]] & [[Peyr.]] ex [[Boiss.]] 1866 (s)
*''[[Euphorbia bongolavaensis]]'' [[Rauh]] 1993 (s)
*''[[Euphorbia bonpaldii]]'' [[Sweet]] 1830
*''[[Euphorbia boophthona]]'' [[C.A.Gardner]] 1942
*''[[Euphorbia borbonica]]'' [[Boiss.]] 1862
*''[[Euphorbia borealis]]'' [[Baikov]] 2002
*''[[Euphorbia borenensis]]'' [[M.G.Gilbert]] ex [[S.Carter]] & [[M.G.Gilbert]] 1987 (s)
*''[[Euphorbia borodini]]'' [[Sambuk]] 1928
*''[[Euphorbia bosseri]]'' [[Leandri]] 1965 (s)
*''[[Euphorbia bothae]]'' [[Lotsy]] & [[Goddijn]] 1928 (hybrid) (s)
*''[[Euphorbia bottae]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia bougheyi]]'' [[L.C.Leach]] 1964 (s)
*''[[Euphorbia bouleyi]]'' [[S.Moore]] 1920
*''[[Euphorbia bourgaeana]]'' [[J.Gay]] ex [[Boiss.]] 1862 (s)
*''[[Euphorbia brachiata]]'' ([[Klotzsch]] & [[Garcke]]) [[E.Mey.]] ex [[Boiss.]] 1862 (s)
*''[[Euphorbia brachycera]]'' [[Engelm.]] 1858 - Horned spurge
*''[[Euphorbia brachyphylla]]'' [[Denis]] 1921
*''[[Euphorbia bracteata]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1798 (s) syn. Pedilanthus bracteatus
*''[[Euphorbia bracteolaris]]'' [[Boiss.]] 1860
*''[[Euphorbia brakdamensis]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia brandegei]]'' [[Millsp.]] 1889
*''[[Euphorbia brassii]]'' [[P.I.Forst.]] 1994 (s)
*''[[Euphorbia braunsii]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia bravoana]]'' [[Svent.]] 1954 (s)
*''[[Euphorbia breviarticulata]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
**''[[Euphorbia breviarticulata var. breviarticulata]]'' (s)
**''[[Euphorbia breviarticulata var. trunciformis]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia brevicornu]]'' [[Ferdinand Albin Pax|Pax]] 1909
*''[[Euphorbia brevirama]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia brevis]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia brevitorta]]'' [[P.R.O.Bally]] 1959 (s)
*''[[Euphorbia briquetii]]'' [[Emb.]] & [[Maire]] 1929
*''[[Euphorbia brittonii]]'' [[Millsp.]] 1913 (s)
*''[[Euphorbia broteri]]'' [[Daveau]] 1885
*''[[Euphorbia broussonetii]]'' [[Carl Ludwig Willdenow|Willd.]] ex [[Johann Heinrich Friedrich Link|Link]] 1828 (s)
*''[[Euphorbia brownii]]'' [[Baillon]] 1866
*''[[Euphorbia brunellii]]'' [[Chiov.]] 1952 (s)
*''[[Euphorbia bruntii]]'' ([[Proctor]]) [[Oudejans]] 1989
*''[[Euphorbia bruynsii]]'' [[L.C.Leach]] 1981 (s)
*''[[Euphorbia bryophylla]]'' [[Donn.Sm.]] 1913
*''[[Euphorbia bubalina]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia buchtormensis]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1830
*''[[Euphorbia buhsei]]'' [[Boiss.]] 1862
*''[[Euphorbia bulbispina]]'' [[Rauh &]] & [[Razaf.]] 1991 (s)
*''[[Euphorbia bulleyana]]'' [[Diels]] 1912
*''[[Euphorbia bungei]]'' [[Boiss.]] 1862
*''[[Euphorbia bupleurifolia]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1797 (s)
*''[[Euphorbia bupleuroides]]'' [[Desf.]] 1798
*''[[Euphorbia burchellii]]'' [[Müll.Arg.]] 1874
*''[[Euphorbia burgeri]]'' [[M.G.Gilbert]] 1993;; (s)
*''[[Euphorbia burmanica]]'' [[Hook.f.]] 1886
*''[[Euphorbia burmannii]]'' ([[Klotzsch]] & [[Garcke]]) [[E.Mey.]] ex [[Boiss.]] 1860 (s)
*''[[Euphorbia buruana]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
*''[[Euphorbia buschiana]]'' [[Grossh.]] 1940
*''[[Euphorbia bussei]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
**''[[Euphorbia bussei var. bussei]]'' (s)
**''[[Euphorbia bussei var. kibwezensis]]'' ([[N.E.Br.]]) [[S.Carter]] 1987 (s)
*''[[Euphorbia buxoides]]'' [[Radcl.-Sm.]] 1971 (s)
*''[[Euphorbia bwambensis]]'' [[S.Carter]] 1987 (s)

==C==
{{compactTOC2}}
*''[[Euphorbia cactus]]'' [[Ehrenb.]] ex [[Boiss.]] 1862 (s)
**''[[Euphorbia cactus var. cactus]]'' (s)
**''[[Euphorbia cactus var. tortirama]]'' [[Rauh]] & [[Lavranos]] 1967 (s)
*''[[Euphorbia caducifolia]]'' Haines 1914 (s)
*''[[Euphorbia caecorum]]'' [[Carl Friedrich Philipp von Martius|Mart.]] ex [[Boiss.]] 1862
*''[[Euphorbia caeladenia]]'' [[Boiss.]] 1859
*''[[Euphorbia caerulans]]'' [[Ferdinand Albin Pax|Pax]] 1898 (s)
*''[[Euphorbia caerulescens]]'' [[Haw.]] 1827 (s)
*''[[Euphorbia caesia]]'' [[Kar.]] & [[Kir.]] 1841
*''[[Euphorbia caespitosa]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788 (s)
*''[[Euphorbia calabarica]]'' [[Burkill]] 1901
*''[[Euphorbia calamiformis]]'' [[P.R.O.Bally]] & [[S.Carter]] 1985
*''[[Euphorbia calcarata]]'' ([[Schltdl.]]) [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus calcaratus
*''[[Euphorbia calcicola]]'' [[Fernald]] 1901
*''[[Euphorbia californica]]'' [[George Bentham|Benth.]] 1844 (s)
**''[[Euphorbia californica var. californica]]'' (s)
**''[[Euphorbia californica var. hindsiana]]'' ([[George Bentham|Benth.]]) [[Wiggins]] 1955 (s)
*''[[Euphorbia caloderma]]'' [[S.Carter]] 2000 (s)
*''[[Euphorbia calonesica]]'' [[Croizat]] 1940
*''[[Euphorbia calva]]'' [[N.E.Br.]] 1911
*''[[Euphorbia calyculata]]'' [[Carl Sigismund Kunth|Kunth]] 1817 (s)
*''[[Euphorbia calyptrata]]'' [[Coss.]] & [[Durieu]] ex [[Coss.]] & [[Kralik]] 1857
*''[[Euphorbia camagueyensis]]'' ([[Millsp.]]) [[Urb.]] 1924
*''[[Euphorbia cameronii]]'' [[N.E.Br.]] 1962 (s)
*''[[Euphorbia canariensis]]'' [[Carolus Linnaeus|L.]] 1753 (s) - Canary Island spurge
*''[[Euphorbia candelabrum]]'' ([[Kotschy]] 1856 (s)
**''[[Euphorbia candelabrum var. bilocularis]]'' ([[N.E.Br.]]) [[S.Carter]] 1987 (s)
**''[[Euphorbia candelabrum var. candelabrum]]'' (s)
*''[[Euphorbia cannellii]]'' [[L.C.Leach]] 1974 (s)
*''[[Euphorbia capansa]]'' [[Ducke]] 1938
*''[[Euphorbia caperonioides]]'' [[R.A.Dyer]] & [[P.G.Meyer]] 1966
*''[[Euphorbia capillaris]]'' [[Gagnep.]] 1912
*''[[Euphorbia capitellata]]'' [[Engelm.]] 1858
*''[[Euphorbia capitulata]]'' [[Rchb.]] 1832
*''[[Euphorbia capmanambatoensis]]'' [[Rauh]] 1995 (s)
*''[[Euphorbia capsaintemariensis]]'' [[Rauh]] 1970 (s)
*''[[Euphorbia capuronii]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia caputaureum]]'' [[Denis]] 1921 (s)
*''[[Euphorbia caputmedusae]]'' [[Carolus Linnaeus|L.]] 1753 (s) - Medusa's head
*''[[Euphorbia caracasana]]'' ([[Klotzsch]] & [[Garcke]]) [[Boiss.]] 1862 (s)
*''[[Euphorbia cardiophylla]]'' [[Boiss.]] & [[Heldr.]] ex [[Boiss.]] 1853
*''[[Euphorbia carinifolia]]'' [[N.E.Br.]] 1911
*''[[Euphorbia carinulata]]'' [[P.R.O.Bally]] & [[S.Carter]] 1988 (s)
*''[[Euphorbia carissoides]]'' [[F.M.Bailey]] 1906
*''[[Euphorbia carniolica]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1778
*''[[Euphorbia carpartica]]'' [[Wol.]] emend. [[Pilát]] 1935
*''[[Euphorbia cartaginiensis]]'' [[Porta]] 1892 (E. carthaginiensis?) 
*''[[Euphorbia carteriana]]'' [[P.R.O.Bally]] 1964 (s)
*''[[Euphorbia carullae]]'' [[Sennen]] 1922
*''[[Euphorbia carunculata]]'' [[Waterf.]] 1948
*''[[Euphorbia carunculifera]]'' [[L.C.Leach]] 1970 (s)
**''[[Euphorbia carunculifera ssp. carunculifera]]'' (s)
**''[[Euphorbia carunculifera ssp. subfastigiata]]'' [[L.C.Leach]] 1974 (s)
*''[[Euphorbia cassia]]'' [[Boiss.]] 1853
*''[[Euphorbia cassythoides]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia castillonii]]'' [[Lavranos]] 2002 (s)
*''[[Euphorbia catamarcensis]]'' ([[Croizat]]) [[Subils]] 1977
*''[[Euphorbia cataractarum]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia catenata]]'' ([[S.Carter]]) [[Bruyns]] 2006 (s) syn. Monadenium catenatum
*''[[Euphorbia caterviflora]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia cattimandoo]]'' [[Elliot]] ex [[Wight]] 1993 (s)
*''[[Euphorbia caucasica]]'' [[Dubovik]] ex [[Dubovik]] & [[Klokov]] 1976
*''[[Euphorbia caudiculosa]]'' [[Boiss.]] 1862
*''[[Euphorbia cayensis]]'' [[Millsp.]] 1904 (s)
*''[[Euphorbia cedrorum]]'' [[Rauh]] & [[Hebding]] 1993 (s)
*''[[Euphorbia celastroides]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia celata]]'' [[R.A.Dyer]] 1974 (s)
*''[[Euphorbia celerieri]]'' ([[Emb.]]) [[Vindt]] 1953
*''[[Euphorbia centunculoides]]'' [[Carl Sigismund Kunth|Kunth]] 1817 (s)
*''[[Euphorbia ceratocarpa]]'' [[Ten.]] 1811
*''[[Euphorbia cereiformis]]'' [[Carolus Linnaeus|L.]] 1753 (s) - Milk barrel
*''[[Euphorbia ceroderma]]'' [[I.M.Johnst.]] 1924 (s)
*''[[Euphorbia cervicornu]]'' [[Baillon]] 1891
*''[[Euphorbia chaborasia]]'' [[Gomb.]] 1956
*''[[Euphorbia chaculana]]'' [[Donn.Sm.]] 1899 (s)
*''[[Euphorbia chaetocalyx]]'' [[Boiss.]] 1935
*''[[Euphorbia chamaecaula]]'' [[Weath.]] 1910
*''[[Euphorbia chamaeclada]]'' [[Ule]] 1908
*''[[Euphorbia chamaepeplus]]'' [[Boiss.]] & [[Gaill.]] ex [[Boiss.]] 1859
**''[[Euphorbia chamaepeplus var. chamaepeplus]]''
**''[[Euphorbia chamaepeplus var. angustifolia]]'' [[A.Danin]] 1992
*''[[Euphorbia chamaerrhodos]]'' [[Boiss.]] 1860
*''[[Euphorbia chamaesula]]'' [[Boiss.]] 1860
*''[[Euphorbia chamaesyce]]'' [[Carolus Linnaeus|L.]] 1753
**''[[Euphorbia chamaesyce ssp. chamaesyce]]''
**''[[Euphorbia chamaesyce ssp. massiliensis]]'' ([[A. P. de Candolle|DC.]]) [[Thell.]] 1917
*''[[Euphorbia chamaesycoides]]'' [[B.Nord.]] 1974
*''[[Euphorbia chamissonis]] '' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1962
*''[[Euphorbia chankoana]]'' [[Vorosch.]] 1961
*''[[Euphorbia chapmanii]]'' [[Oudejans]] 1989
*''[[Euphorbia characias]]'' [[Carolus Linnaeus|L.]] 1753 (s)
**''[[Euphorbia characias ssp. characias]]'' (s)
**''[[Euphorbia characias ssp. wulfenii]]'' ([[Hoppe]] ex [[W.D.J.Koch]]) [[Radcl.-Sm.]] 1968 (s)
*''[[Euphorbia charleswilsoniana]]'' [[V.Vlk]] 1997 (s)
*''[[Euphorbia cheiradenia]]'' [[Boiss.]] & [[Hohen.]] ex [[Boiss.]] 1853
*''[[Euphorbia cheirolepioides]]'' [[Rech.f.]] 1963
*''[[Euphorbia cheirolepis]]'' [[Friedrich Ernst Ludwig von Fischer|Fisch.]] & [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1850
*''[[Euphorbia chenopodiifolia]]'' [[Boiss.]] 1866
*''[[Euphorbia chersina]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia chersonesa]]'' [[Huft]] 1985
*''[[Euphorbia chevalieri]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (s) syn. Monadenium chevalieri
*''[[Euphorbia chiapensis]]'' [[Brandegee]] 1914
*''[[Euphorbia chimaera]]'' [[Lipsky]] 1899
*''[[Euphorbia chiogenes]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989
*''[[Euphorbia chiogenoides]]'' [[Rusby]] 1920
*''[[Euphorbia chiribensis]]'' [[V.W.Steinm.]] & [[Felger]] 1997
*''[[Euphorbia chrysochaeta]]'' [[W.Fitzg.]] 1918
*''[[Euphorbia chrysocoma]]'' [[H.Lév.]] & [[Vaniot]] ex [[H.Lév.]] 1906
*''[[Euphorbia cibdela]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia cinerascens]]'' [[Engelm.]] 1859
*''[[Euphorbia cinera]]'' [[W.Fitzg.]] 1918
*''[[Euphorbia citrina]]'' [[S.Carter]] 1990
*''[[Euphorbia clandestina]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1804 (s)
*''[[Euphorbia clarae]]'' ([[Malaisse]] & [[Lecron]]) [[Bruyns]] 2006 (s) syn. Monadenium clarae
*''[[Euphorbia clarkeana]]'' [[Hook.f.]] 1887
*''[[Euphorbia classenii]]'' [[P.R.O.Bally]] & [[S.Carter]] 1974 (s)
*''[[Euphorbia clava]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1784 (s)
*''[[Euphorbia clavarioides]]'' [[Boiss.]] 1860 (s)
**''[[Euphorbia clavarioides var. clavarioides]]'' (s)
**''[[Euphorbia clavarioides var. truncata]]'' ([[N.E.Br.]]) [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia clavidigitata]]'' [[Gage]] 1914
*''[[Euphorbia clavigera]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia claytonioides]]'' [[Ferdinand Albin Pax|Pax]] 1897
*''[[Euphorbia clementei]]'' [[Boiss.]] 1838
**''[[Euphorbia clementei ssp. clementei]]''
**''[[Euphorbia clementei ssp. faurei]]'' ([[Maire]]) [[J.Vicens]], [[Molero]] & [[C.Blanché]] 1996
**''[[Euphorbia clementei ssp. villosa]]'' ([[Faure]] & [[Maire]]) [[J.Vicens]], [[Molero]] & [[C.Blanché]] 1996
*''[[Euphorbia clementii]]'' [[Domin]] 1927
*''[[Euphorbia clivicola]]'' [[R.A.Dyer]] 1951 (s)
*''[[Euphorbia clusiifolia]]'' [[Hook.]] & [[Arn.]] 1832
*''[[Euphorbia coalcomanensis]]'' ([[Croizat]]) [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus coalcomanensis
*''[[Euphorbia coccinea]]'' [[Roth]] 1821
*''[[Euphorbia cofradiana]]'' [[Brandegee]] 1905
*''[[Euphorbia coghlanii]]'' [[F.M.Bailey]] 1896
*''[[Euphorbia cognata]] '' ([[Klotzsch]] & [[Garcke]]) [[Boiss.]] 1862
*''[[Euphorbia colimae]]'' [[Rose]] 1895
*''[[Euphorbia colchica]]'' ([[Litv.]]) [[D.V.Geltman]] 1995
*''[[Euphorbia colletioides]]'' [[George Bentham|Benth.]] 1846 (s)
*''[[Euphorbia colliculina]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia collina]]'' [[Rodolfo Amando Philippi|Phil.]] 1857
*''[[Euphorbia colligata]]'' [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus connatus
*''[[Euphorbia colorata]]'' [[Engelm.]] 1858 (s)
*''[[Euphorbia colubrina]]'' [[P.R.O.Bally]] & [[S.Carter]] 1982 (s)
*''[[Euphorbia columnaris]]'' [[P.R.O.Bally]] 1964 (s)
*''[[Euphorbia comans]]'' [[W.Fitzg.]] 1918
*''[[Euphorbia commersonii]]'' [[Baillon]] emend. [[Denis]] 1921
*''[[Euphorbia commutata]]'' [[Engelm.]] 1856 - Tinted woodland spurge
*''[[Euphorbia comosa]]'' [[Vell.]] 1829 (s)
*''[[Euphorbia complanata]]'' [[Warb.]] 1894 (s)
*''[[Euphorbia complexa]]'' [[R.A.Dyer]] 1937 (s)
*''[[Euphorbia compressa]]'' [[Boiss.]] 1862
*''[[Euphorbia concanensis]]'' [[Janarth.]] & [[S.R.Yadav]] 1995
*''[[Euphorbia condylocarpa]]'' [[M.Bieb.]] 1808 (s)
*''[[Euphorbia conferta]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989
*''[[Euphorbia confinalis]]'' [[R.A.Dyer]] 1951 (s)
**''[[Euphorbia confinalis ssp. confinalis]]'' (s)
**''[[Euphorbia confinalis ssp. rhodesica]]'' [[L.C.Leach]] 1966 (s)
*''[[Euphorbia confluens]]'' [[Nel]] 1933 (s)
*''[[Euphorbia conformis]]'' [[N.E.Br.]] 1912
*''[[Euphorbia congenera]]'' [[Carl Ludwig Blume|Blume]] 1826
*''[[Euphorbia congestiflora]]'' [[L.C.Leach]] 1970 (s)
*''[[Euphorbia coniosperma]]'' [[Boiss.]] & [[Buhse]] 1860
*''[[Euphorbia connata]]'' [[Boiss.]] 1862
*''[[Euphorbia consanguina]]'' [[Schrenk]] ex [[Friedrich Ernst Ludwig von Fischer|Fisch.]] & [[C.A.Mey.]] 1841
*''[[Euphorbia consobrina]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia consoquitlae]]'' [[Brandegee]] 1920
*''[[Euphorbia conspicua]]'' [[N.E.Br.]] 1912 (s)
*''[[Euphorbia contorta]]'' [[L.C.Leach]] 1964 (s)
*''[[Euphorbia contoversa]]'' [[N.E.Br.]] 1912
*''[[Euphorbia convolvuloides]]'' [[Hochst.]] ex [[Hook.]] & [[George Bentham|Benth.]] 1849
*''[[Euphorbia conzattii]]'' [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus pulchellus
*''[[Euphorbia cooperi]]'' [[N.E.Br.]] ex [[A.Berger]] 1907 (s) - Transvaal candelabra tree, lesser candelabra tree
**''[[Euphorbia cooperi var. calidicola]]'' [[L.C.Leach]] 1970 (s)
**''[[Euphorbia cooperi var. cooperi]]'' (s)
**''[[Euphorbia cooperi var. ussanguensis]]'' ([[N.E.Br.]]) [[L.C.Leach]] 1970 (s)
*''[[Euphorbia copiapina]]'' [[Rodolfo Amando Philippi|Phil.]] 1860 (s)
*''[[Euphorbia corallioides]]'' [[Carolus Linnaeus|L.]] 1753 - Coral spurge
*''[[Euphorbia cordatella]]'' [[Oudejans]] 1989
*''[[Euphorbia cordifolia]]'' [[Stephen Elliott (botanist)|Elliott]] 1824
*''[[Euphorbia cornastra]]'' ([[Dressler]]) [[Radcl.-Sm.]] 1978
*''[[Euphorbia corniculata]]'' [[R.A.Dyer]] 1949 (s)
*''[[Euphorbia cornigera]]'' [[Boiss.]] 1862
*''[[Euphorbia corollata]]'' [[Carolus Linnaeus|L.]] 1753 - Flowering spurge
*''[[Euphorbia correllii]]'' [[M.C.Johnst.]] 1975
*''[[Euphorbia correntina]]'' [[D.Parodi]] 1881
*''[[Euphorbia corsica]]'' [[Req.]] 1825
*''[[Euphorbia corymbosa]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia cossoniana]]'' [[Boiss.]] 1862
*''[[Euphorbia cotinifolia]]'' [[Carolus Linnaeus|L.]] 1753 (s)
**''[[Euphorbia cotinifolia ssp. cotinifolia]]'' (s)
**''[[Euphorbia cotinifolia ssp. cotinoides]]'' ([[Miq.]]) [[Christenh.]] 2002 (s) - Mexican shrubby spurge, red spurge, Caribbean copper plant
*''[[Euphorbia coudercii]]'' [[Gagnep.]] 1921
*''[[Euphorbia cowellii]]'' ([[Millsp.]] ex [[N.L.Britton]]) [[Oudejans]] 1989 (s)
*''[[Euphorbia cozumelensis]]'' [[Millsp.]] 1900
*''[[Euphorbia craspedia]]'' [[Boiss.]] 1846
*''[[Euphorbia crassinodis]]'' [[Urb.]] 1899
*''[[Euphorbia crassipes]]'' [[Marloth]] 1909 (s)
*''[[Euphorbia crebrifolia]]'' [[S.Carter]] 1990
*''[[Euphorbia cremersii]]'' [[Rauh]] & [[Razaf.]] 1991 (s)
**''[[Euphorbia cremersii var. cremersii]]'' (s)
***''[[Euphorbia cremersii var. cremersii fa. viridiflora]]'' [[Rauh]] 1991 (s)
**''[[Euphorbia cremersii var. rakotozafyi]]'' ([[Cremers]]) [[Rauh]] 1995 (s)
*''[[Euphorbia crenata]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (s) syn. Monadenium crenatum
*''[[Euphorbia crenulata]]'' [[Engelm.]] 1858 - Chinese caps
*''[[Euphorbia crepitata]]'' [[L.C.Wheeler]] 1939
*''[[Euphorbia crepuscula]]'' ([[L.C.Wheeler]]) [[V.W.Steinm.]] & [[Felger]] 1996
*''[[Euphorbia cressoides]]'' [[M.C.Johnst.]] 1975
*''[[Euphorbia cretophila]]'' [[Klokov]] 1955
*''[[Euphorbia crispa]]'' ([[Haw.]]) [[Sweet]] 1827 (s)
*''[[Euphorbia cristata]]'' [[Heyne]] ex [[A.W.Roth]] 1821
*''[[Euphorbia croizatii]]'' [[Leandri]] 1946 (s)
*''[[Euphorbia crossadenia]]'' [[Ferdinand Albin Pax|Pax]] & [[K.Hoffmann]] ex [[Ferdinand Albin Pax|Pax]] 1923
*''[[Euphorbia crotonoides]]'' [[Boiss.]] 1862
**''[[Euphorbia crotonoides ssp. crotonoides]]''
**''[[Euphorbia crotonoides ssp. narokensis]]'' [[S.Carter]] 1984
*''[[Euphorbia cruentata]]'' [[Graham]] 1832
*''[[Euphorbia cryptocaulis]]'' [[M.G.Gilbert]] 1987 (s)
*''[[Euphorbia cryptospinosa]]'' [[P.R.O.Bally]] 1963 (s)
*''[[Euphorbia cuatrecasii]]'' [[Pau]] ex [[Cuatrec.]] 1929
*''[[Euphorbia cubensis]]'' [[Boiss.]] 1866 (s)
*''[[Euphorbia cuchumatensis]]'' [[Standl.]] & [[Steyerm.]] 1944
*''[[Euphorbia culminicola]]'' [[Ant.Molina]] 1965
*''[[Euphorbia cumbrae]]'' [[Boiss.]] 1860
*''[[Euphorbia cumulata]]'' [[R.A.Dyer]] 1931 (s)
*''[[Euphorbia cumulicola]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989
*''[[Euphorbia cuneata]]'' [[Vahl]] 1791 (s)
**''[[Euphorbia cuneata ssp. cretacea]]'' [[S.Carter]] 1992 (s)
**''[[Euphorbia cuneata ssp. cuneata]]'' (s)
**''[[Euphorbia cuneata ssp. lamproderma]]'' [[S.Carter]] 1980 (s)
**''[[Euphorbia cuneata ssp. spinescens]]'' ([[Ferdinand Albin Pax|Pax]]) [[S.Carter]] 1980 (s)
***''[[Euphorbia cuneata ssp. spinescens var. pumilans]]'' [[S.Carter]] 1980 (s)
***''[[Euphorbia cuneata ssp. spinescens var. spinescens]]'' (s)
**''[[Euphorbia cuneata ssp. wajirensis]]'' [[S.Carter]] 1980 (s)
*''[[Euphorbia cuneifolia]]'' [[Guss.]] 1826
*''[[Euphorbia cuneneana]]'' [[L.C.Leach]] 1976 (s)
**''[[Euphorbia cuneneana ssp. cuneneana]]'' (s)
**''[[Euphorbia cuneneana ssp. rhizomatosa]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia cupricola]]'' ([[Malaisse]] & [[Lecron]]) [[Bruyns]] 2006 (s) syn. Monadenium cupricola
*''[[Euphorbia cuprispina]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia cupularis]]'' [[Boiss.]] 1860 (s) syn. Synadenium cupulare

*''[[Euphorbia curocana]]'' [[L.C.Leach]] 1975 (s)
*''[[Euphorbia curtisii]]'' [[Engelm.]] ex [[Chapm.]] 1860 - Curtis' spurge
*''[[Euphorbia curvirama]]'' [[R.A.Dyer]] 1931 (s)
*''[[Euphorbia cuspidata]]'' [[Bertol.]] 1843
*''[[Euphorbia cussonioides]]'' [[P.R.O.Bally]] 1958 (s)
*''[[Euphorbia cyathophora]]'' [[Murray]] 1786 (s) - Wild poinsettia
*''[[Euphorbia cylindrica]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia cylindrifolia]]'' [[Marn.-Lap.]] & [[Rauh]] 1961 (s)
**''[[Euphorbia cylindrifolia ssp.cylindrifolia]]'' (s)
**''[[Euphorbia cylindrifolia ssp. tuberifera]]'' [[Rauh]] 1963 (s)
*''[[Euphorbia cymbifera]]'' ([[Schltdl.]]) [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus cymbiferus
*''[[Euphorbia cymbiformis]]'' [[Rusby]] 1895
*''[[Euphorbia cyparissias]]'' [[Carolus Linnaeus|L.]] 1753 - Cypress spurge
*''[[Euphorbia cyparissioides]]'' [[Ferdinand Albin Pax|Pax]] 1894
*''[[Euphorbia cypria]]'' [[Boiss.]] 1862
*''[[Euphorbia cyri]]'' [[V.W.Steinm.]] 2003 syn. Pedilanthus tomentellus
*''[[Euphorbia cyrtophylla]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia czerepanovii]]'' [[D.V.Geltman]] 1997

==D==
{{compactTOC2}}
*''[[Euphorbia daghestanica]]'' [[D.V.Geltman]] 1997
*''[[Euphorbia dahurica]]'' [[Peschkova]] 1979
*''[[Euphorbia dalettiensis]]'' [[M.G.Gilbert]] 1987 (s)
*''[[Euphorbia dallachyna]]'' [[Baillon]] 1866
*''[[Euphorbia damarana]]'' [[L.C.Leach]] 1975 (s)
*''[[Euphorbia damasoi]]'' [[Oudejans]] 1989
*''[[Euphorbia darbandensis]]'' [[N.E.Br.]] 1913 (s)
*''[[Euphorbia dasyacantha]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia dauana]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia davidii]]'' [[Subils]] 1984 - David's spurge
*''[[Euphorbia daviesii]]'' [[E.A.Bruce]] 1940 (s)
*''[[Euphorbia davisii]]'' [[M.S.Khan]] 1964
*''[[Euphorbia davyi]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia dawei]]'' [[N.E.Br.]] 1912 (s)
*''[[Euphorbia debilispina]]'' [[L.C.Leach]] 1992 (s)
*''[[Euphorbia descampsii]]'' ([[Pax]]) [[Bruyns]] 2006 (s) syn. Monadenium descampsii
*''[[Euphorbia decaryi]]'' [[Guillaumin]] 1934 (s)
**''[[Euphorbia decaryi var. ampanihyensis]]'' [[Cremers]] 1984 (s)
**''[[Euphorbia decaryi var. decaryi]]'' (s)
**''[[Euphorbia decaryi var. robinsonii]]'' [[Cremers]] 1984 (s)
**''[[Euphorbia decaryi var. spirosticha]]'' [[Rauh]] & [[Buchloh]] 1987 (s)
*''[[Euphorbia decepta]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia decidua]]'' [[P.R.O.Bally]] & [[L.C.Leach]] 1975 (s)
*''[[Euphorbia decipiens]]'' [[Boiss.]] & [[Buhse]] 1860
*''[[Euphorbia decliviticola]]'' [[L.C.Leach]] 1973 (s)
*''[[Euphorbia decorsei]]'' [[Emmanuel Drake del Castillo|Drake]] 1903 (s)
*''[[Euphorbia dedzana]]'' [[L.C.Leach]] 1992 (s)
*''[[Euphorbia deflexa]]'' [[Sibth.]] & [[J.E.Smith]] 1806
*''[[Euphorbia defoliata]]'' [[Urb.]] 1912 (s)
*''[[Euphorbia degeneri]]'' [[Sherff]] 1936
*''[[Euphorbia deightonii]]'' [[Croizat]] 1938 (s)
*''[[Euphorbia dekindtii]]'' [[Ferdinand Albin Pax|Pax]] 1969 (s)
*''[[Euphorbia delicatula]]'' [[Boiss.]] 1860
*''[[Euphorbia delicatissima]]'' [[S.Carter]] 1990
*''[[Euphorbia delphinensis]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia deltobracteata]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia deltoidea]]'' [[Engelm.]] ex [[Chapm.]] 1883
**''[[Euphorbia deltoidea ssp. adhaerens]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1993
**''[[Euphorbia deltoidea ssp. deltoidea]]''
***''[[Euphorbia deltoidea ssp. deltoidea var. deltoidea]]''
***''[[Euphorbia deltoidea ssp. deltoidea var. serpyllum]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989
**''[[Euphorbia deltoidea ssp. pinetorum]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1993
*''[[Euphorbia demissa]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia dendroides]]'' [[Carolus Linnaeus|L.]] 1753 (s)- Tree spurge
*''[[Euphorbia denisiana]]'' [[Guillaumin]] 1929 (s)
*''[[Euphorbia denisii]]'' [[Oudejans]] 1989 (s)
*''[[Euphorbia densa]]'' [[Schrenk]] 1845
*''[[Euphorbia densiflora]]'' [[Klotzsch]] & [[Garcke]] ex [[Klotzsch]] 1861
*''[[Euphorbia densifolia]]'' [[K.Koch]] 1849
*''[[Euphorbia densispina]]'' [[S.Carter]] 2005 (s)
*''[[Euphorbia densiuscula]]'' [[Popov]] 1923
*''[[Euphorbia densiusculiformis]]'' ([[Pazij]]) [[Botsch.]] ex [[Botsch.]] & [[Tscherneva]] 1977
*''[[Euphorbia dentata]]'' [[Michx.]] 1803 - Toothed spurge
**''[[Euphorbia dentata var. dentata]]''
**''[[Euphorbia dentata var. lasiocarpa]]'' [[Boiss.]] 1862
*''[[Euphorbia denticulata]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788
*''[[Euphorbia dentosa]]'' [[I.M.Johnst.]] 1922
*''[[Euphorbia depauperata]]'' [[Hochst.]] ex [[A.Rich.]] 1850 (s)
**''[[Euphorbia depauperata var. depauperata]]'' (s)
**''[[Euphorbia depauperata var. laevicarpa]]'' [[Friis]] & [[Vollesen]] 1982 (s)
**''[[Euphorbia depauperata var. trachycarpa]]'' ([[Ferdinand Albin Pax|Pax]]) [[S.Carter]] 1985 (s)
**''[[Euphorbia depauperata var. tsetserrensis]]'' [[S.Carter]] 1990 (s)
*''[[Euphorbia deppeana]]'' [[Boiss.]] 1860
*''[[Euphorbia derickii]]'' [[V.W.Steinm.]] 2005
*''[[Euphorbia desmondii]]'' [[Keay]] & [[Milne-Redh.]] 1955 (s)
*''[[Euphorbia despolita]]'' ([[Menezes]]) [[T.Monod]] 1990 (s)
*''[[Euphorbia dhofarensis]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia diazlunana]]'' ([[Lomelí]] & [[Sahagún]] ) [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus diazlunanus
*''[[Euphorbia dichroa]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia didiereoides]]'' [[Denis]] & [[Leandri]] 1934 (s)
*''[[Euphorbia digestiva]]'' [[Rojas Acosta]] 1897
*''[[Euphorbia digitata]]'' [[S.Watson]] 1891
*''[[Euphorbia dilunguensis]]'' ([[Malaisse]] & [[Lecron]]) [[Bruyns]] 2006 (s) syn. Monadenium dilunguense
*''[[Euphorbia dilobadena]]'' [[S.Carter]] 1985 (s)
*''[[Euphorbia diminuta]]'' [[S.Carter]] 1984
*''[[Euphorbia dimorphocaulon]]'' [[P.H.Davis]] ex [[Rech.f.]] 1949 (s)
*''[[Euphorbia dinteri]]'' [[A.Berger]] 1906
*''[[Euphorbia dioeca]]'' [[Carl Sigismund Kunth|Kunth]] 1817
*''[[Euphorbia discoidea]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium discoideum
*''[[Euphorbia discoreoides]]'' [[Boiss.]] 1860
**''[[Euphorbia discoreoides ssp. discoreoides]]''
**''[[Euphorbia discoreoides ssp. attenuata]]'' [[V.W.Steinm.]] 1996
*''[[Euphorbia disclusa]]'' [[N.E.Br.]] 1912
*''[[Euphorbia discolor]]'' [[Carl Friedrich von Ledebour|Ledeb.]] 1850
*''[[Euphorbia discrepans]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia dispersa]]'' [[L.C.Leach]] 1974 (s)
*''[[Euphorbia dissitispina]]'' [[L.C.Leach]] 1977 (s)
*''[[Euphorbia distans]]'' [[W.Fitzg.]] 1918
*''[[Euphorbia disticha]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia distinctissima]]'' [[L.C.Leach]] 1992 (s)
*''[[Euphorbia diuretica]]'' [[Larrañaga]] 1923
*''[[Euphorbia djimilensis]]'' [[Boiss.]] 1879
*''[[Euphorbia dolichoceras]]'' [[S.Carter]] 1980 (s)
*''[[Euphorbia doloensis]]'' [[M.G.Gilbert]] 1990 (s)
*''[[Euphorbia donii]]'' [[Oudejans]] 1989<;/small>
*''[[Euphorbia dorsiventralis]]'' [[Urb.]] 1908
*''[[Euphorbia dracunculoides]]'' ;[[Jean-Baptiste Lamarck|Lam.]] 1788
**''[[Euphorbia dracunculoides ssp. dracunculoides]]''
**''[[Euphorbia dracunculoides ssp. inconspicua]]'' ([[J.Ball]]) [[Maire]] 1929
*''[[Euphorbia dregeana]]'' [[E.Mey.]] ex [[Boiss.]] 1862 (s)
*''[[Euphorbia dressleri]]'' [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus gracilis
*''[[Euphorbia drummondii]]'' [[Boiss.]] 1860
*''[[Euphorbia drupifera]]'' [[Thonn.]] 1827 (s) syn. Elaeophorbia drupifera
*''[[Euphorbia dubovikii]]'' [[Oudejans]] 1989
*''[[Euphorbia duckei]]'' [[Oudejans]] 1989
*''[[Euphorbia dugandiana]]'' [[Croizat]] 1943
*''[[Euphorbia dulcis]]'' [[Carolus Linnaeus|L.]] 1753 - Sweet spurge
*''[[Euphorbia dumalis]]'' [[S.Carter]] 1985
*''[[Euphorbia dumenticola]]'' [[P.R.O.Bally]] & [[S.Carter]] 1976 (s)
*''[[Euphorbia dunensis]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia durandoi]]'' [[Chabert]] 1900
*''[[Euphorbia duranii]]'' [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia duranii var. ankaratrae]]'' [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia duranii var. duranii]]'' (s)
*''[[Euphorbia duriuscula]]'' [[Ferdinand Albin Pax|Pax]] & [[K.Hoffmann]] ex [[Herzog]]{{dn}} 1945
*''[[Euphorbia duseimata]]'' [[R.A.Dyer]] 1934 (s)
*''[[Euphorbia dussii]]'' [[Krug]] & [[Urb.]] ex [[A.Duss]] 1897
*''[[Euphorbia duvalii]]'' [[H.Lecoq]] & [[Lamotte]] 1848
*''[[Euphorbia dwyeri]]'' [[D.G.Burch]] 1967

==E==
{{compactTOC2}}
*''[[Euphorbia eanophylla]]'' [[Croizat]] 1939
*''[[Euphorbia ebracteolata]]'' [[Hayata]] 1904
**''[[Euphorbia ebracteolata var. ebracteolata]]''
**''[[Euphorbia ebracteolata var. anhweiensis]]'' ([[Hurus.]]) [[Oudejans]] 1992
*''[[Euphorbia echinulata]]'' ([[Stapf]]) [[Bruyns]] 2006 (s) syn. Monadenium echinulatum
*''[[Euphorbia echinus]]'' [[Hook.]] & [[Cosson]] 1874 (s)
*''[[Euphorbia ecklonii]]'' ([[Klotzsch]] & [[Garcke]]) [[Baillon]] 1863 (s)
*''[[Euphorbia ecorniculata]]'' [[Kitam.]] 1958
*''[[Euphorbia edgeworthii]]'' [[Boiss.]] 1862
*''[[Euphorbia edmondii]]'' [[Hochr.]] 1904
*''[[Euphorbia eduardoi]]'' [[L.C.Leach]] 1968 (s)
*''[[Euphorbia eggersii]]'' [[Urb.]] 1899
*''[[Euphorbia eglandulosa]]'' [[V.W.Steinm.]] 1996
*''[[Euphorbia eichleri]]'' [[Müll.Arg.]] 1874
*''[[Euphorbia eilensis]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia einensis]]'' [[G.Will.]] 2004 (s)
**''[[Euphorbia einensis var. anemoarenicola]]'' [[G.Will.]] 2004 (s)
**''[[Euphorbia einensis var. einensis]]'' (s)
*''[[Euphorbia elastica]]'' [[Jum.]] 1905
*''[[Euphorbia eleanoriae]]'' ([[M.E.Lawr.]] & [[W.L.Wagner]]) [[Govaerts]] 2000
*''[[Euphorbia elata]]'' [[Brandegee]] 1914 (s)
*''[[Euphorbia elegans]]'' [[Spreng.]] 1826
*''[[Euphorbia elegantissima]]'' [[P.R.O.Bally]] & [[S.Carter]] 1974 (s)
*''[[Euphorbia ellenbeckii]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
*''[[Euphorbia elliotii]]'' [[Leandri]] 1945 (s)
*''[[Euphorbia ellipsifolia]]'' [[Gilli]] 1981
*''[[Euphorbia elodes]]'' [[Boiss.]] 1860
*''[[Euphorbia elquiensis]]'' [[Rodolfo Amando Philippi|Phil.]] 1895
*''[[Euphorbia elwendica]]'' [[Stapf]] 1886
*''[[Euphorbia elymaitica]]'' [[Bornm.]] 1911
*''[[Euphorbia emetica]]'' [[Padilla]] 1903
*''[[Euphorbia emirnensis]]'' [[Baker]] 1883
*''[[Euphorbia engelmannii]]'' [[Boiss.]] 1862
*''[[Euphorbia engleri]]'' [[Ferdinand Albin Pax|Pax]] 1895
*''[[Euphorbia engleriana]]'' [[Dinter]] 1921 (s)
*''[[Euphorbia enopla]]'' [[Boiss.]] 1860 (s)
**''[[Euphorbia enopla var. enopla]]'' (s)
**''[[Euphorbia enopla var. viridis]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia enormis]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia ensifolia]]'' [[Baker]] 1883
*''[[Euphorbia enterophora]]'' [[Emmanuel Drake del Castillo|Drake]] 1899 (s)
**''[[Euphorbia enterophora ssp. crassa]]'' [[Cremers]] 1978 (s)
**''[[Euphorbia enterophora ssp. enterophora]]'' (s)
*''[[Euphorbia ephedroides]]'' [[E.Mey.]] ex [[Boiss.]] 1862 (s)
**''[[Euphorbia ephedroides var. debilis]]'' [[L.C.Leach]] 1990 (s)
**''[[Euphorbia ephedroides var. ephedroides]]'' (s)
**''[[Euphorbia ephedroides var. imminuta]]'' [[L.C.Leach]] & [[G.Will.]] 1990 (s)
*''[[Euphorbia ephedromorpha]]'' [[Bartlett]] 1911 (s)
*''[[Euphorbia epicyparissias]] '' ([[Klotzsch]] & [[Garcke]]) [[Boiss.]] 1862
*''[[Euphorbia epilobiifolia]]'' [[W.T.Wang]] 1988
*''[[Euphorbia epiphylloides]]'' [[Kurz]] 1873 (s)
*''[[Euphorbia epithymoides]]'' [[Carolus Linnaeus|L.]] 1762
*''[[Euphorbia equisetiformis]]'' [[A.Stewart]] 1911 (s)
*''[[Euphorbia eranthes]]'' [[R.A.Dyer]] & [[Milne-Redh.]] 1937 (s)
*''[[Euphorbia eriantha]]'' [[George Bentham|Benth.]] 1844 - Beetle spurge, Mexican pointsetta
*''[[Euphorbia ericoides]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788
*''[[Euphorbia erigavensis]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia erinacea]]'' [[Boiss.]] & [[Kotschy]] ex [[Boiss.]] 1895
*''[[Euphorbia eriophora]]'' [[Boiss.]] 1844
*''[[Euphorbia erlangeri]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
*''[[Euphorbia ernestii]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia erubescens]]'' [[Boiss.]] 1846
*''[[Euphorbia erythradenia]]'' [[Boiss.]] 1846
*''[[Euphorbia erythrina]]'' [[Johann Heinrich Friedrich Link|Link]] 1822
*''[[Euphorbia erythrocephala]]'' [[P.R.O.Bally]] & [[Milne-Redh.]] 1951 (s)
*''[[Euphorbia erythroclada]]'' [[Boiss.]] 1862
*''[[Euphorbia erythrocucullata]]'' [[Mangelsdorff]] 2006
*''[[Euphorbia erythrodon]]'' [[Boiss.]] & [[Heldr.]] ex [[Boiss.]] 1853
*''[[Euphorbia erythroxyloides]]'' [[Baker]] 1883
*''[[Euphorbia esculenta]]'' [[Marloth]] 1908 (s)
*''[[Euphorbia espinosa]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
*''[[Euphorbia estevesii]]'' [[N.Zimm.]] & [[P.J.Braun]] 2000 (s)
*''[[Euphorbia esula]]'' [[Carolus Linnaeus|L.]] 1753 - Leafy spurge
*''[[Euphorbia esuliformis]]'' [[S.Schauer]] ex [[Nees]] & [[S.Schauer]] 1847
*''[[Euphorbia etuberculata]]'' [[P.R.O.Bally]] & [[S.Carter]] 1985 (s)
*''[[Euphorbia eugeniae]]'' [[Prokh.]] 1949
*''[[Euphorbia euonymclada]]'' [[Croizat]] 1940
*''[[Euphorbia eustacei]]'' [[N.E.Br.]] 1913 (s)
*''[[Euphorbia evansii]]'' [[Ferdinand Albin Pax|Pax]] 1909 (s)
*''[[Euphorbia excelsa]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia excisa]]'' [[Urb.]] & [[Erik Leonard Ekman|Ekman]] 1929
*''[[Euphorbia exigua]]'' [[Carolus Linnaeus|L.]] 1753 - Dwarf spurge
*''[[Euphorbia exilis]]'' [[L.C.Leach]] ex [[L.C.Leach]] & [[G.Will.]] 1990 (s)
*''[[Euphorbia exilispina]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia exserta]]'' ([[John Kunkel Small|Small]]) [[William Chambers Coker|Coker]] ex [[Clewell]] 1985 -[http://www.tropicos.org/Name/12802083],[http://www.tropicos.org/Publication/1402] Coastal sand spurge
*''[[Euphorbia exstipulata]]'' [[Engelm.]] 1858 - Square-seed spurge
*''[[Euphorbia exumensis]]'' ([[Millsp.]]) [[Correll]] 1980
*''[[Euphorbia eyassiana]]'' [[P.R.O.Bally]] & [[S.Carter]] 1982 (s)
*''[[Euphorbia eylesii]]'' [[Rendle]] 1905

==F==
{{compactTOC2}}
*''[[Euphorbia falcata]]'' [[Carolus Linnaeus|L.]] 1753 - Sickle spurge
*''[[Euphorbia famatamboay]]'' [[F.Friedmann]] & [[Cremers]] 1976 (s)
**''[[Euphorbia famatamboay ssp. famatamboay]]'' (s)
**''[[Euphorbia famatamboay ssp. itampolensis]]'' [[F.Friedmann]] & [[Cremers]] 1976 (s)
*''[[Euphorbia fanshawei]]'' [[L.C.Leach]] 1973 (s)
*''[[Euphorbia fascicaulis]]'' [[S.Carter]] 1977 (s)
*''[[Euphorbia fasciculata]]'' [[Thunb.]] 1800 (s)
*''[[Euphorbia faucicola]]'' [[L.C.Leach]] 1977 (s)
*''[[Euphorbia feddemae]]'' [[McVaugh]] 1961
*''[[Euphorbia fendleri]]'' [[Torr.]] & [[A.Gray]] 1857
*''[[Euphorbia ferganensis]]'' [[B.Fedtsch.]] ex [[O.Fedtsch.]] & [[B.Fedtsch.]] 1916 (s)
*''[[Euphorbia ferox]]'' [[Marloth]] 1913 (s)
*''[[Euphorbia fianarantsoae]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia fidjiana]]'' [[Boiss.]] 1862
*''[[Euphorbia fiherensis]]'' [[Poiss.]] 1912 (s)
*''[[Euphorbia filicaulis]]'' [[Urb.]] 1924
*''[[Euphorbia filiflora]]'' [[Marloth]] 1913 (s)
**''[[Euphorbia filiflora var. filiflora]]'' (s)
**''[[Euphorbia filiflora var. nana]]'' [[G.Will.]] 2003 (s)
*''[[Euphorbia filiformis]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium chevalieri var. filiforme / Monadenium filiforme
*''[[Euphorbia filipes]]'' [[George Bentham|Benth.]] 1873
*''[[Euphorbia fimbriata]]'' [[Scop.]] 1788 (s)
*''[[Euphorbia finkii]]'' ([[Boiss.]]) [[V.W.Steinm.]] 2003 syn. Pedilanthus finkii
*''[[Euphorbia fischeri]]'' [[Ferdinand Albin Pax|Pax]] 1894
*''[[Euphorbia fischeriana]]'' [[Steud.]] 1841
*''[[Euphorbia fissispina]]'' [[P.R.O.Bally]] & [[S.Carter]] 1987 (s)
*''[[Euphorbia fistulosa]]'' [[M.S.Khan]] 1964
*''[[Euphorbia flanagani]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia flavicoma]]'' [[A. P. de Candolle|DC.]] 1813
*''[[Euphorbia flerowii]]'' [[Woronow]] ex [[Flerov]] 1940
*''[[Euphorbia floribunda]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia florida]]'' [[Engelm.]] 1858
*''[[Euphorbia floridana]]'' [[Chapm.]] 1860 - Greater Florida spurge
*''[[Euphorbia fluminis]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia foliiflua]]'' [[Ule]] 1908
*''[[Euphorbia foliolosa]]'' [[Boiss.]] 1862
*''[[Euphorbia foliosa]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[N.E.Br.]] 1915 (s)
*''[[Euphorbia fontqueriana]]'' [[Greuter]] 1966
*''[[Euphorbia formosana]]'' [[Hayata]] 1911
*''[[Euphorbia forolensis]]'' [[L.E.Newton]] 1995 (s)
*''[[Euphorbia forskalii]]'' [[J.Gay]] 1847
*''[[Euphorbia fortissima]]'' [[L.C.Leach]] 1964 (s)
*''[[Euphorbia fortuita]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia fosbergii]]'' ([[J.Florence]]) [[Govaerts]] 2000
*''[[Euphorbia fractiflexa]]'' [[S. Carter]] & [[J.R.I.Wood]] 1982 (s)
*''[[Euphorbia fragifera]]'' [[G.Jan]] 1818
*''[[Euphorbia francescae]]'' [[L.C.Leach]] 1984
*''[[Euphorbia franchetii]]'' [[B.Fedtsch.]] 1916
*''[[Euphorbia franckiana]]'' [[A.Berger]] 1906 (s)
*''[[Euphorbia francoana]]'' [[Boiss.]] 1860
*''[[Euphorbia francoisii]]'' [[Leandri]] 1946 (s)
**''[[Euphorbia francoisii var. crassicaulis]]'' [[Rauh]] 1966 (s)
**''[[Euphorbia francoisii var. francoisii]]'' (s)
*''[[Euphorbia frankii]]'' [[Lavranos]] 2005 (s)
*''[[Euphorbia franksiae]]'' [[N.E.Br.]] 1915 (s)
**''[[Euphorbia franksiae var. franksiae]]'' (s)
**''[[Euphorbia franksiae var. zuluensis]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia fraseri]]'' [[Boiss.]] 1862
*''[[Euphorbia friedrichiae]]'' [[Dinter]] 1914 (s)
*''[[Euphorbia friesii]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (s) syn. Monadenium friesii
*''[[Euphorbia friesiorum]]'' ([[A.Hässl.]]) [[S.Carter]] 1985 (s)
*''[[Euphorbia frutescens]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia fruticosa]]'' [[Peter Forsskål|Forssk.]] 1775 (s)
*''[[Euphorbia fruticulosa]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia fulgens]]'' [[Karw.]] ex [[Klotzsch]] 1834 - Scarlet plume
*''[[Euphorbia fulva]]'' [[Stapf]] 1907
*''[[Euphorbia furcata]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia furcillata]]'' [[Carl Sigismund Kunth|Kunth]] 1817
*''[[Euphorbia fusca]]'' [[Marloth]] 1910 (s)
*''[[Euphorbia fuscolanata]]'' [[Gilli]] 1971
*''[[Euphorbia fusiformis]]'' [[Buch.-Ham.]] ex [[D.Don]] 1825 (s)
*''[[Euphorbia fwambensis]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (s) syn. Monadenium fwambense

==G==
{{compactTOC2}}
*''[[Euphorbia gaditana]]'' [[Coss.]] 1849
*''[[Euphorbia gaillardotii]]'' [[Boiss.]] & [[Blanche]] ex [[Boiss.]] 1859
*''[[Euphorbia galapagaia]]'' [[B.L.Rob.]] & [[Greenm.]] 1895
*''[[Euphorbia galgalana]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia galiciana]]'' [[McVaugh]] 1961
*''[[Euphorbia gamkensis]]'' [[Marx]] 1999 (s)
*''[[Euphorbia garanbiensis]]'' [[Hayata]] 1920
*''[[Euphorbia garberi]]'' [[Engelm.]] ex [[Chapm.]] 1883
*''[[Euphorbia gariepina]]'' [[Boiss.]] 1860 (s)
**''[[Euphorbia gariepina ssp. balsamea]]'' ([[Welw.]] ex [[Hiern]]) [[L.C.Leach]] 1980 (s)
**''[[Euphorbia gariepina ssp. gariepina]]'' (s)
*''[[Euphorbia garkeana]]'' [[Boiss.]] 1862
*''[[Euphorbia garuana]]'' [[N.E.Br.]] 1912
*''[[Euphorbia gasparrinii]]'' [[Boiss.]] 1862
*''[[Euphorbia gatbergensis]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia gaubae]]'' ([[Soják]]) [[Radcl.-Sm.]] 1981
**''[[Euphorbia gaubae var. gaubae]]''
**''[[Euphorbia gaubae var. velutina]]'' ([[Bornm.]] & [[Gauba]]) [[Oudejans]] 1992
*''[[Euphorbia gaudichaudii]] '' [[Boiss.]] 1860
*''[[Euphorbia gaumeri]]'' [[Millsp.]] 1898
*''[[Euphorbia gayi]]'' [[Salis]] 1834
*''[[Euphorbia gebelica]]'' [[Brullo]] 1996
*''[[Euphorbia gedrosiaca]]'' [[Rech.f.]], [[Aellen]] & [[Esfand.]] ex [[Rech.f.]] 1951
*''[[Euphorbia geldorensis]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia gemmea]]'' [[P.R.O.Bally]] & [[S.Carter]] 1982 (s)
*''[[Euphorbia genistoides]]'' [[Karl Heinrich Bergius|Bergius]] 1767
*''[[Euphorbia genoudiana]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia gentilis]]'' [[N.E.Br.]] 1915 (s)
**''[[Euphorbia gentilis ssp. gentilis]]'' (s)
**''[[Euphorbia gentilis ssp. tanquana]]'' [[L.C.Leach]] 1988 (s)
*''[[Euphorbia gentryi]]'' [[V.W.Steinm.]] & [[T.F.Daniel]] 1996 (s)
*''[[Euphorbia georgei]]'' [[Oudejans]] 1989
*''[[Euphorbia germainii]]'' [[Rodolfo Amando Philippi|Phil.]] 1857
*''[[Euphorbia geroldii]]'' [[Rauh]] 1994 (s)
*''[[Euphorbia geyeri]]'' [[Engelm.]] ex [[Engelm.]] & [[A.Gray]] 1845
*''[[Euphorbia giessii]]'' [[L.C.Leach]] 1982 (s)
*''[[Euphorbia gillettii]]'' [[P.R.O.Bally]] & [[S.Carter]] 1977 (s)
**''[[Euphorbia gillettii ssp. gillettii]]'' (s)
**''[[Euphorbia gillettii ssp. tenuior]]'' [[S.Carter]] 1977 (s)
*''[[Euphorbia giumboensis]]'' [[A.Hässl.]] 1931 (s)
*''[[Euphorbia glaberrima]]'' [[K.Koch]] 1849
*''[[Euphorbia glabriflora]]'' Vis. ex Vis. & [[Pančić]] 1864
*''[[Euphorbia gladiata]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium yattanum var. gladiatum / Monadenium gladiatum
*''[[Euphorbia glandularis]]'' [[L.C.Leach]] & [[G.Will.]] 1990 (s)
*''[[Euphorbia glanduligera]]'' [[Ferdinand Albin Pax|Pax]] 1894
*''[[Euphorbia glauca]]'' [[Georg Forster|G.Forst.]] 1786 (s)
*''[[Euphorbia glaucescens]]'' [[Carl Ludwig Willdenow|Willd.]] 1803
*''[[Euphorbia glaucopoda]]'' [[Diels]] 1912
*''[[Euphorbia globosa]]'' ([[Haw.]]) [[Sims]] 1826 (s) - Globose spurge
*''[[Euphorbia globulicaulis]]'' [[S.Carter]] 1990 (s)
*''[[Euphorbia glochidiata]]'' [[Ferdinand Albin Pax|Pax]] 1897 (s)
*''[[Euphorbia glomerulans]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia glytosperma]]'' [[Engelm.]] 1858
*''[[Euphorbia godana]]'' [[Buddens.]], [[Lawant]], & [[Lavranos]] 2005 (s)
*''[[Euphorbia goetzei]]'' [[Ferdinand Albin Pax|Pax]] 1900 (s)
*''[[Euphorbia goliana]]'' [[Philibert Commerçon|Comm.]] ex [[Jean-Baptiste Lamarck|Lam.]] 1788
*''[[Euphorbia golondrina]]'' [[L.C.Wheeler]] 1940
*''[[Euphorbia gorenflotii]]'' [[Mobayen]] 1984
*''[[Euphorbia gorgonis]]'' [[A.Berger]] 1910 (s)
*''[[Euphorbia gossypina]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
**''[[Euphorbia gossypina ssp. gossypina]]'' (s)
***''[[Euphorbia gossypina ssp. gossypina var. coccinea]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
***''[[Euphorbia gossypina ssp. gossypina var. gossypina]]'' (s)
**''[[Euphorbia gossypina ssp. mangulensis]]'' [[S.Carter]] 1999 (s)
*''[[Euphorbia gottlebei]]'' [[Rauh]] 1992 (s)
*''[[Euphorbia goudotii]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia goyazensis]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia gracilicaulis]]'' [[L.C.Leach]] 1969 (s)
*''[[Euphorbia gracilior]]'' [[Cronquist]] 1949
*''[[Euphorbia graciliramea]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
*''[[Euphorbia gracillima]]'' [[S.Watson]] 1886
*''[[Euphorbia gradyi]]'' [[V.W.Steinm.]] & [[Ram.-Roa]] 1999 (s)
*''[[Euphorbia graminea]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1763 - Grassleaf spurge
*''[[Euphorbia graminifolia]]'' [[Vill.]] 1786
*''[[Euphorbia graminifolia ssp. graminifolia]]''
*''[[Euphorbia graminifolia ssp. tommasiniana]]'' ([[Bertolini]]) [[Oudejans]] 1989
*''[[Euphorbia graminifolia ssp. zhiguliensis]]'' ([[Prokh.]]) [[Oudejans]] 1989
*''[[Euphorbia grammata]]'' ([[McVaugh]]) [[Oudejans]] 1993
*''[[Euphorbia grandialata]]'' [[R.A.Dyer]] 1937 (s)
*''[[Euphorbia grandicornis]]'' [[Goebel]] ex [[N.E.Br.]] 1897 (s)
**''[[Euphorbia grandicornis ssp. grandicornis]]'' (s)
**''[[Euphorbia grandicornis ssp. sejuncta]]'' [[L.C.Leach]] 1970 (s)
*''[[Euphorbia grandidens]]'' [[Haw.]] 1825 (s)
*''[[Euphorbia grandidieri]]'' [[Baillon]] 1886
*''[[Euphorbia grandifolia]]'' [[Haw.]] 1812 (s) syn. Elaeophorbia grandifolia
*''[[Euphorbia grandiloba]]'' [[Chiov.]] 1932
*''[[Euphorbia graniticola]]'' [[L.C.Leach]] 1964 (s)
*''[[Euphorbia grantii]]'' [[Oliver]] 1875 (s)
*''[[Euphorbia granulata]]'' [[Peter Forsskål|Forssk.]] 1775
*''[[Euphorbia greenwayi]]'' [[P.R.O.Bally]] & [[S.Carter]] 1974 (s)
**''[[Euphorbia greenwayi ssp. breviaculeata]]'' [[S.Carter]] 1987 (s)
**''[[Euphorbia greenwayi ssp. greenwayi]]'' (s)
*''[[Euphorbia gregaria]]'' [[Marloth]] 1910 (s)
*''[[Euphorbia gregersenii]]'' [[K.Maly]] ex [[Beck]] 1920
*''[[Euphorbia griffithii]]'' [[Hook.f.]] 1887
*''[[Euphorbia grisea]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia griseola]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
**''[[Euphorbia griseola ssp. griseola]]'' (s)
**''[[Euphorbia griseola ssp. mashonica]]'' [[L.C.Leach]] 1967 (s)
**''[[Euphorbia griseola ssp. zambiensis]]'' [[L.C.Leach]] 1967 (s)
*''[[Euphorbia grisophylla]]'' [[M.S.Khan]] 1964
*''[[Euphorbia groenewaldii]]'' [[R.A.Dyer]] 1938 (s)
*''[[Euphorbia grosseri]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
*''[[Euphorbia grossheimii]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia guadalajarana]]'' [[S.Watson]] 1887
*''[[Euphorbia guanarensis]]'' [[Pittier]] 1929
*''[[Euphorbia guatemalensis]]'' [[Standl.]] & [[Steyerm.]] 1944 (s)
*''[[Euphorbia gueinzii]]'' [[Boiss.]] 1862 (s)
**''[[Euphorbia gueinzii var. albovillosa]]'' ([[Ferdinand Albin Pax|Pax]]) [[N.E.Br.]] 1915 (s)
**''[[Euphorbia gueinzii var. gueinzii]]'' (s)
*''[[Euphorbia guentheri]]'' ([[Pax]]) [[Bruyns]] 2006 (s) syn. Monadenium guentheri
*''[[Euphorbia guerichiana]]'' [[Ferdinand Albin Pax|Pax]] ex [[Adolf Engler|Engl.]] 1894 (s)
*''[[Euphorbia guiengola]]'' [[W.R.Buck]] & [[Huft]] 1977 (s)
*''[[Euphorbia guillauminiana]]'' [[Boiteau]] 1942 (s)
*''[[Euphorbia guineensis]]'' [[Brot.]] ex [[N.E.Br.]] 1912
*''[[Euphorbia gulestanica]]'' [[Podlech]] 1981
*''[[Euphorbia gumaroi]]'' [[J.Meyrán]] 2000 (s)
*''[[Euphorbia gummifera]]'' [[Boiss.]] 1910 (s)
*''[[Euphorbia guntensis]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia guyoniana]]'' [[Boiss.]] & [[Reut.]] 1852
*''[[Euphorbia gymnadenia]]'' [[Urb.]] 1908
*''[[Euphorbia gymnocalycioides]]'' [[M.G.Gilbert]] & [[S.Carter]] 1984 (s)
*''[[Euphorbia gymnoclada]]'' [[Engelm.]] 1860 (s)
*''[[Euphorbia gymnota]]'' [[Urb.]] 1908
*''[[Euphorbia gypsicola]]'' [[Rech.f.]] & [[Aellen]] ex [[Rech.f.]] 1951
*''[[Euphorbia gypsophila]]'' [[S.Carter]] 1992

==H==
{{compactTOC2}}
*''[[Euphorbia hadramautica]]'' [[Baker]] 1967 (s)
*''Euphorbia haeleeleana'' – [[Kauaʻi Spurge]] (s)
*''[[Euphorbia haematantha]]'' [[Boiss.]] 1862
*''[[Euphorbia hainanensis]]'' [[Croizat]] 1940 (s)
*''[[Euphorbia hajhirensis]]'' [[Radcl.-Sm.]] 1971 (s)
*''[[Euphorbia hakutosanensis]]'' [[Hurus.]] 1940
*''[[Euphorbia halemanui]]'' [[Sherff]] 1936
*''[[Euphorbia halipedicola]]'' [[L.C.Leach]] 1970 (s)
*''[[Euphorbia hallii]]'' [[R.A.Dyer]] 1953 (s)
*''[[Euphorbia hamaderoensis]]'' [[A.G.Mill]] 2004
*''[[Euphorbia hamata]]'' ([[Haw.]]) [[Sweet]] 1818 (s)
*''[[Euphorbia hamiltonii]]'' [[Oudejans]] 1989
*''[[Euphorbia handeniensis]]'' [[S.Carter]] 1985 (s)
*''[[Euphorbia handiensis]]'' [[Burchard]] 1912 (s)
*''[[Euphorbia hararensis]]'' [[Ferdinand Albin Pax|Pax]] 1907
*''[[Euphorbia harmandii]]'' [[Gagnep.]] 1921
*''[[Euphorbia hartwegiana]]'' [[Boiss.]] 1862
*''[[Euphorbia hassleriana]]'' [[Chodat]] 1902
*''[[Euphorbia hausknechtii]]'' [[Boiss.]] 1866
*''[[Euphorbia hebecarpa]]'' [[Boiss.]] 1846
*''[[Euphorbia hedigeriana]]'' ([[Malaisse]] & [[Lecron]]) [[Bruyns]] 2006 (= ''Monadenium hedigerianum'') (s)
*''[[Euphorbia hedyotoides]]'' (s)
*''[[Euphorbia heishuiensis]]'' [[W.T.Wang]] 1988
*''[[Euphorbia helenae]]'' [[Urb.]] 1908 (s)
**''Euphorbia helenae'' ssp. ''grandifolia'' [[Borhidi]] & [[O.Muñiz]] 1972
**''Euphorbia helenae'' ssp. ''helenae''
*''[[Euphorbia heleniana]]'' [[Thell.]] & [[Stapf]] 1916
*''Euphorbia helioscopia'' – [[Sun Spurge]]
*''[[Euphorbia helleri]]'' [[Millsp.]] 1898 – [[Heller's Spurge]]
*''[[Euphorbia helwigii]]'' [[Urb.]] & [[Erik Leonard Ekman|Ekman]] 1929
*''[[Euphorbia henricksonii]]'' [[M.C.Johnst.]] 1974
*''[[Euphorbia henryi]]'' [[Hemsl.]] 1894
*''[[Euphorbia hepatica]]'' [[Urb.]] & [[Erik Leonard Ekman|Ekman]] 1929
*''[[Euphorbia heptagona]]'' [[Carolus Linnaeus|L.]] 1753 (s)
**''Euphorbia heptagona'' var. ''dentata'' ([[A.Berger]]) [[N.E.Br.]] 1915
**''Euphorbia heptagona'' var. ''heptagona''
**''Euphorbia heptagona'' var. ''ramosa'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941
**''Euphorbia heptagona'' var. ''subsessilis'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941
**''Euphorbia heptagona'' var. ''viridis'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941
*''[[Euphorbia heptapotamica]]'' [[V.P.Goloskokov]] 1982
*''[[Euphorbia herman-schwartzii]]'' (s)
*''[[Euphorbia heraldiana]]'' ([[Millsp.]]) [[Oudejans]] 1989
*''[[Euphorbia herbacea]]'' ([[Pax]]) [[Bruyns]] 2006 (= ''Monadenium herbaceum'') (s)
*''[[Euphorbia herbstii]]'' ([[W.L.Wagner]]) [[Oudejans]] 1989
*''[[Euphorbia herniariifolia]]'' [[Carl Ludwig Willdenow|Willd.]] 1799
*''[[Euphorbia herrei]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia herteri]]'' [[Arechav.]] 1911
*''[[Euphorbia heteradena]]'' [[Jaub.]] & [[Édouard Spach|Spach]] 1845
*''[[Euphorbia heterochroma]]'' [[Ferdinand Albin Pax|Pax]] 1895 (s)
**''Euphorbia heterochroma'' ssp. ''heterochroma''
**''Euphorbia heterochroma'' ssp. ''tsavoensis'' [[S.Carter]] 1987
*''[[Euphorbia heterodoxa]]'' [[Müll.Arg.]] 1874 (s)
*''Euphorbia heterophylla'' – [[Painted Euphorbia]], Desert Poinsettia, (Mexican) Fireplant, Paint Leaf, Kaliko
*''[[Euphorbia heteropoda]]'' [[Pax]] (= ''Monadenium heteropodum'') (s)
**''Euphorbia heteropoda'' var. ''formosa'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (= ''Monadenium heteropodum'' var. ''formosum'', ''Monadenium schubei'' var. ''formosum'')
**''Euphorbia heteropoda'' var. ''heteropoda'' (= ''Monadenium heteropodum'' var. ''heteropodum'')
*''[[Euphorbia heterospina]]'' [[S.Carter]] 1987 (s)
**''Euphorbia heterospina'' ssp. ''baringoensis'' [[S.Carter]] 1987
**''Euphorbia heterospina'' ssp. ''heterospina''
*''[[Euphorbia hexadenia]]''
*''[[Euphorbia hexagona]]'' [[Nutt.]] ex [[Spreng.]] 1826 – [[Six-angled Spurge]]
*''[[Euphorbia hexagonoides]]'' [[S.Watson]] 1889
*''[[Euphorbia heyligersiana]]'' [[P.I.Forst.]] 1994 (s)
*''[[Euphorbia heyneana]]'' [[Spreng.]] 1826
*''[[Euphorbia hiernii]]'' ([[Croizat]]) [[Oudejans]] 1989 (= ''Elaeophorbia hiernii'') (s)
*''[[Euphorbia hieroglyphica]]'' [[Coss.]] & [[Durieu]] ex [[Boiss.]] 1862
*''[[Euphorbia hieronymi]]'' [[Subils]] 1977
*''[[Euphorbia hierosolymitana]]'' [[Boiss.]] 1853 (s)
**''Euphorbia hierosolymitana'' var. ''hierosolymitana''
**''Euphorbia hierosolymitana'' var. ''ramanensis'' ([[B.Baum]]) [[Zohary]] 1972
*''[[Euphorbia hildebrandtii]]''
*''[[Euphorbia hillebrandii]]'' [[H.Lév.]] 1911
*''[[Euphorbia himalayensis]]'' ([[Klotzsch]] & [[Garcke]]) [[Boiss.]] 1862
*''[[Euphorbia hinkleyorum]]'' [[I.M.Johnst.]] 1924 (s)
*''[[Euphorbia hintonii]]'' [[L.C.Wheeler]] 1939 (s)
*''[[Euphorbia hippocrepica]]'' [[Hemsl.]] 1894
*''[[Euphorbia hirsuta]]'' [[Carolus Linnaeus|L.]] 1759
**''Euphorbia hirsuta'' var. ''hirsuta''
**''Euphorbia hirsuta'' var. ''leucotricha'' ([[Boiss.]]) [[Oudejans]] 1990
*''[[Euphorbia hirta]]'' [[Carolus Linnaeus|L.]] 1753 (= ''Chamaesyce hirta'')
**''Euphorbia hirta'' var. ''hirta''
*''[[Euphorbia hirtella]]'' [[Boiss.]] 1860
*''[[Euphorbia hispida]]'' [[Boiss.]] 1860
*''[[Euphorbia hockii]]'' [[De Wild.]] 1911
*''[[Euphorbia hoffmanniana]]'' ([[Klotzsch]] & [[Garcke]]) [[Boiss.]] 1862 (s)
*''[[Euphorbia hondurana]]'' [[Standl.]] & [[L.O.Williams]] 1950
*''[[Euphorbia hofstaetteri]]'' (s)
*''[[Euphorbia holmesiae]]'' [[Lavranos]] 1992 (s)
*''[[Euphorbia holochlorina]]'' [[Rizzini]] 1990 (s)
*''[[Euphorbia hooveri]]'' [[L.C.Wheeler]] 1940
*''[[Euphorbia hopetownensis]]'' [[Nel]] 1933 (s)
*''[[Euphorbia hormorrhiza]]'' [[Radcl.-Sm.]] 1978 (s)
*''[[Euphorbia horombensis]]'' (s)
*''[[Euphorbia horrida]]'' [[Boiss.]] 1860 (s)
**''Euphorbia horrida'' var. ''horrida''
**''Euphorbia horrida'' var. ''major'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941
**''Euphorbia horrida'' var. ''noorsvedensis'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941
**''Euphorbia horrida'' var. ''striata'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941
*''[[Euphorbia horwoodii]]'' [[S.Carter]] & [[Lavranos]] 1978 (s)
*''[[Euphorbia hottentotoa]]'' [[Marloth]] 1930 (s)
*''[[Euphorbia hsinchuensis]]'' ([[S.C.Lin]] & [[Chaw]]) [[C.Y.Wu]] & [[J.S.Ma]] 1992
*''[[Euphorbia huanchahana]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862 (s)
**''Euphorbia huanchahana'' ssp. ''huanchahana''
**''Euphorbia huanchahana'' ssp. ''penazuelensis'' [[Croizat]] 1943
*''[[Euphorbia hubertii]]'' [[Ferdinand Albin Pax|Pax]] 1912 (s)
*''[[Euphorbia humayensis]]'' [[Brandegee]] 1905
*''[[Euphorbia humbertii]]''
*''[[Euphorbia humifusa]]'' [[Carl Ludwig Willdenow|Willd.]] 1814
*''[[Euphorbia humilis]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1830
*''[[Euphorbia humistrata]]'' [[Engelm.]] ex [[A.Gray]] 1856
*''[[Euphorbia hunzikeri]]'' [[Subils]] 1975
*''[[Euphorbia hurusawae]]'' [[Oudejans]] 1989
*''[[Euphorbia hurusawae]]'' [[Oudejans]] 1989
*''[[Euphorbia hurusawae var. hurusawae]]'' [[Oudejans]] 1989
*''[[Euphorbia hurusawae var. imaii]]'' ([[Hurus.]] ) [[Oudejans]] 1989
*''[[Euphorbia hyberna]]'' [[Carolus Linnaeus|L.]] 1753 – [[Irish Dpurge]]
**''Euphorbia hyberna'' ssp. ''canuti'' ([[Parl]]) [[Tutin]] 1968
**''Euphorbia hyberna'' ssp. ''gibelliana'' ([[Peola]]) [[M.Raffaelli]] 1979
**''Euphorbia hyberna'' ssp. ''hyberna''
**''Euphorbia hyberna'' ssp. ''insularis'' ([[Boiss.]]) [[J.I.Briquet]]
*''[[Euphorbia hylonoma]]'' [[Hand.-Mazz.]] 1931
*''[[Euphorbia hypericifolia]]'' [[Carolus Linnaeus|L.]] 1753
*''[[Euphorbia hypogaea]]'' [[Marloth]] 1910 (s)
*''[[Euphorbia hyssopifolia]]'' [[Carolus Linnaeus|L.]] 1759 (= ''Chamaesyce hyssopifolia'')
**''Euphorbia hyssopifolia'' var. ''blanchetii'' ([[Miq.]] ex [[Boiss.]]) [[Oudejans]] 1992
**''Euphorbia hyssopifolia'' var. ''hyssopifolia''
**''Euphorbia hyssopifolia'' var. ''paraguayensis'' ([[Chodat]]) [[Oudejans]] 1992
**''Euphorbia hyssopifolia'' var. ''pruinosa'' ([[Chodat]]) [[Oudejans]] 1992
**''Euphorbia hyssopifolia'' var. ''pubescenticocca'' [[Christenh.]] 2002
**''Euphorbia hyssopifolia'' var. ''pulchella'' ([[Carl Sigismund Kunth|Kunth]]) [[Oudejans]] 1992
**''Euphorbia hyssopifolia'' var. ''uniflora'' ([[Chodat]] & [[Hassl.]]) [[Oudejans]] 1992

==I==
{{compactTOC2}}
*''[[Euphorbia iancannellii]]'' [[Bruyns]] 2006 (= ''Monadenium cannellii'') (s)
*''[[Euphorbia iberica]]'' [[Boiss.]] 1860
*''[[Euphorbia iharanae]]'' [[Rauh]] 1995 (s)
*''[[Euphorbia imerina]]'' [[Cremers]] 1984 (s)
*''[[Euphorbia imitata]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia immersa]]'' [[P.R.O.Bally]] & [[S.Carter]] 1967 (s)
*''[[Euphorbia imparispina]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia impressa]]'' [[Chiov.]] 1929
*''[[Euphorbia inaequilatera]]'' [[Otto Wilhelm Sonder|Sond.]] 1850
**''Euphorbia inaequilatera'' var. ''dentata'' ([[N.E.Br.]]) [[M.G.Gilbert]] 1993
**''Euphorbia inaequilatera'' var. ''inaequilatera''
**''Euphorbia inaequilatera'' var. ''jemenica'' ([[Schweinf.]]) [[Oudejans]] 1992
**''Euphorbia inaequilatera'' var. ''spanothrix'' [[S.Carter]] 1987
*''[[Euphorbia inaequispina]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia inaguaensis]]'' [[Oudejans]] 1989
*''[[Euphorbia inappendiculata]]'' [[Domin]] 1927
*''[[Euphorbia inarticulata]]'' [[Schweinf.]] 1899
*''[[Euphorbia incerta]]'' [[Brandegee]] 1891 (= ''Chamaesyce incerta'')
*''[[Euphorbia inciformis]]'' [[Sessé]] & [[Moc.]] 1894
*''[[Euphorbia inconstantia]]'' [[R.A.Dyer]] 1931
*''[[Euphorbia inculta]]'' [[P.R.O.Bally]] 1964 (s)
*''[[Euphorbia indecora]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia inderiensis]]'' [[Less.]] ex [[Kar.]] & [[Kir.]] 1842
*''[[Euphorbia indica]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788
*''[[Euphorbia indistincta]]'' [[P.I.Forst.]] 1994 (s)
*''[[Euphorbia indivisa]]'' ([[Engelm.]]) [[Tidestr.]] 1935
*''[[Euphorbia indurescens]]'' [[L.C.Leach]] 1975 (s)
*''[[Euphorbia inermis]]'' [[P.Miller]] 1768 (s)
**''Euphorbia inermis'' var. ''huttoniae'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
**''Euphorbia inermis'' var. ''inermis'' (s)
*''[[Euphorbia infesta]]'' [[Ferdinand Albin Pax|Pax]] 1904
*''[[Euphorbia inflexa]]'' [[Urb.]] & [[Erik Leonard Ekman|Ekman]] 1929
*''[[Euphorbia ingens]]'' [[E.Mey.]] ex [[Boiss.]] 1862 – [[Naboom]], "[[Candelabra Tree]]"
*''[[Euphorbia ingenticapsa]]'' [[L.C.Leach]] 1971 (s)
*''[[Euphorbia innocua]]'' [[L.C.Wheller]] 1939 – [[Velvet Spurge]]
*''[[Euphorbia inornata]]'' [[N.E.Br.]] 1925 (s)
*''[[Euphorbia insarmentosa]]'' [[G.P.Meyer]] 1966
*''[[Euphorbia insulana]]'' [[Vell.]] 1829 (s)
**''Euphorbia insulana'' var. ''insulana'' (s)
**''Euphorbia insulana'' var. ''pilcomayensis'' [[Croizat]] 1943 (s)
**''Euphorbia insulana'' var. ''tovarenis'' ([[Boiss.]]) [[Oudejans]] 1992 (s)
*''[[Euphorbia interaxillaris]]'' [[Fernald]] 1901
*''[[Euphorbia intisy]]'' [[Emmanuel Drake del Castillo|Drake]] 1900 (s)
*''[[Euphorbia intricata]]'' [[S.Carter]] 1985 (s)
*''[[Euphorbia inundata]]'' [[Torr.]] ex [[Chapm.]] 1860 – [[Florida Pineland Spurge]]
**''Euphorbia inundata'' var. ''inundata''
**''Euphorbia inundata'' var. ''garrettii'' [[E.L.Bridges]] & [[Orzell]] 2002
*''[[Euphorbia inundaticola]]'' [[L.C.Leach]] 1992 (s)
*''[[Euphorbia invaginata]] '' [[Croizat]] 1943 (s)
*''[[Euphorbia invenusta]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (= ''Monadenium invenustum'') (s)
**''Euphorbia invenusta'' var. ''angusta'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (= ''Monadenium invenustum'' var. ''angustum''{{Verify source|date=November 2007}})
**''Euphorbia invenusta'' var. ''invenusta'' (= ''Monadenium invenustum'' var. ''invenustum''{{Verify source|date=November 2007}}
*''[[Euphorbia ipecacuanhae]]'' [[Carolus Linnaeus|L.]] 1753 – [[American Ipecac]]
*''[[Euphorbia irgisensis]] '' [[Litv.]] 1916
*''[[Euphorbia isacantha]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
*''[[Euphorbia isaloensis]]'' [[Emmanuel Drake del Castillo|Drake]] 1899 (s)
*''[[Euphorbia isatidifolia]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788 (s)
*''[[Euphorbia isaurica]]'' [[M.S.Khan]] 1964
*''[[Euphorbia isophylla]]'' [[Bornm.]] 1908
*''[[Euphorbia itremensis]]'' [[Kimnach]] & [[Lavranos]] 2001 (s)
*''[[Euphorbia ivanjohnstonii]]'' [[M.C.Johnst.]] 1975

==J==
{{compactTOC2}}
*''[[Euphorbia jacquemontii]]'' [[Boiss.]] 1862
*''[[Euphorbia jacquinii]]'' [[Boiss.]] 1862
*''[[Euphorbia jaliscensis]]'' [[B.L.Rob.]] & [[Greenm.]] 1894 (s)
*''[[Euphorbia jamesonii]]'' [[Boiss.]] 1860
*''[[Euphorbia jansenvillensis]]'' [[Nel]] 1935 (s)
*''[[Euphorbia jasiewiczii]]'' ([[Chrtek]] & [[Křísa]]) [[Radcl.-Sm.]] 1981
*''[[Euphorbia jatrophoides]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
*''[[Euphorbia jejuna]]'' [[M.C.Johnst.]] & [[Warnock]] 1960
*''[[Euphorbia jenisseiensis]]'' [[K.S.Baikov]] 1996
*''[[Euphorbia jessonii]]'' [[Oudejans]] 1990
*''[[Euphorbia johannis]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia johnstonii]]'' [[Mayfield]] 1991 (s)
*''[[Euphorbia jolkinii]]'' [[Boiss.]] 1860
*''[[Euphorbia josei]] '' [[Oudejans]] 1989 - Jose spurge
*''[[Euphorbia jovettii]]'' [[Huguet]] 1971
*''[[Euphorbia joyae]]'' [[P.R.O.Bally]] & [[S.Carter]] 1985 (s)
*''[[Euphorbia jubata]]'' [[L.C.Leach]] 1964
*''[[Euphorbia juglans]]'' [[Compton]] 1935 (s)
*''[[Euphorbia juttae]]'' [[Dinter]] 1914 (s)
*''[[Euphorbia juvoklanti]]'' [[Ferdinand Albin Pax|Pax]] 1909 (s)

==K==
{{compactTOC2}}
*''[[Euphorbia kaessneri]]'' [[Ferdinand Albin Pax|Pax]] 1909 (s)
*''[[Euphorbia kaessneri]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (s) (conflict!) syn. Monadenium kaessneri)
*''[[Euphorbia kalaharica]]'' [[Marloth]] 1930
*''[[Euphorbia kalisana]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia kamerunica]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
*''[[Euphorbia kamponii]]'' [[Rauh]] & [[Petignat]] 1995 (s)
*''[[Euphorbia kanalensis]]'' [[Boiss.]] 1866 (s)
*''[[Euphorbia kanaorica]]'' [[Boiss.]] 1862
*''[[Euphorbia kanglingensis]]'' [[W.T.Wang]] 1988
*''[[Euphorbia kansuensis]]'' [[Prokh.]] 1927
*''[[Euphorbia kansui]]'' [[Liou]] ex [[S.B.Ho]] 1981
*''[[Euphorbia kaokoensis]]'' ([[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]]) [[L.C.Leach]] 1976 (s)
*''[[Euphorbia karibensis]]'' [[S.Carter]] 1990
*''[[Euphorbia karoi]]'' [[Freyn]] 1896
*''[[Euphorbia karroensis]]'' ([[Boiss.]]) [[N.E.Br.]] 1915 (s)
*''[[Euphorbia karwinskyi]]'' [[Boiss.]] 1860
*''[[Euphorbia katrajensis]]'' [[Gage]] 1914
*''[[Euphorbia keithii]]'' [[R.A.Dyer]] 1951 (s)
*''[[Euphorbia kelleri]]'' [[Ferdinand Albin Pax|Pax]] 1898 (s)
**''[[Euphorbia kelleri var. kelleri]]'' (s)
**''[[Euphorbia kelleri var. latifolia]]'' [[Ferdinand Albin Pax|Pax]] 1898 (s)
*''[[Euphorbia kemulariae]]'' [[Ter-Chatschat.]] 1963
*''[[Euphorbia kerrii]]'' [[Craib]] 1911 (s)
*''[[Euphorbia kerstingii]]'' [[Ferdinand Albin Pax|Pax]] 1903
*''[[Euphorbia khandallensis]]'' [[Blatt.]] & [[Hallb.]] 1921 (s)
*''[[Euphorbia khasyana]]'' [[Boiss.]] 1862
*''[[Euphorbia kilwana]]'' [[N.E.Br.]] 1911
*''[[Euphorbia kimberleyana]]'' ([[G.Will.]]) [[Bruyns]] 2006 (s) syn. Monadenium kimberleyanum
*''[[Euphorbia kimmerica]]'' [[Lipsky]] ex [[Grossh.]] 1932
*''[[Euphorbia kirimzjulica]]'' [[Stepanov]] 1994
*''[[Euphorbia kiritensis]]'' [[P.R.O.Bally]] & [[S.Carter]] 1988 (s)
*''[[Euphorbia kirkii]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (s) syn. Synadenium kirkii
*''[[Euphorbia kischenensis]]'' [[Vierh.]] 1907 (s)
*''[[Euphorbia kitawagae]]'' ([[Hurus.]]) [[Kitag.]] 1979
*''[[Euphorbia klokovii]]'' [[Dubovik]] ex [[Dubovik]] et al. 1973
*''[[Euphorbia klotzschii]]'' [[Oudejans]] 1989
**''[[Euphorbia klotzschii var. argentina]]'' ([[Müll.Arg]] ex [[August Grisebach|Griseb.]]) [[Oudejans]] 1992
**''[[Euphorbia klotzschii var. dentata]]'' ([[R.E.Fr.]]) [[Oudejans]] 1993
**''[[Euphorbia klotzschii var. klotzschii]]''
**''[[Euphorbia klotzschii var. schizosepala]]'' ([[Boiss.]]) [[Oudejans]] 1992
*''[[Euphorbia knobelii]]'' [[Letty]] 1934 (s)
*''[[Euphorbia knuthii]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
**''[[Euphorbia knuthii ssp. johnsonii]]'' ([[N.E.Br.]]) [[L.C.Leach]] 1973 (s)
**''[[Euphorbia knuthii ssp. knuthii]]'' (s)
*''[[Euphorbia koerneriana]]'' [[Allem]] & [[Irgang]] 1976
*''[[Euphorbia komaroviana]]'' [[Prokh.]] 1949
*''[[Euphorbia kondoi]]'' [[Rauh]] & [[Razaf.]] 1989 (s)
*''[[Euphorbia kopetdaghii]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia kotovii]]'' [[Klokov]] ex [[Dubovik]] & [[Klokov]] 1977
*''[[Euphorbia kotschyana]]'' [[Fenzl]] 1842
*''[[Euphorbia kouandensis]]'' [[Beille]] ex [[A.Chev.]] 1917
*''[[Euphorbia kozlovii]]'' [[Prokh.]] 1927
*''[[Euphorbia kraussiana]]'' [[Bernh.]] ex [[C.Krauss]] 1844
*''[[Euphorbia kudrjaschevii]]'' [[Prokh.]] 1949
*''[[Euphorbia kundelunguensis]]'' ([[Malaisse]]) [[Bruyns]] 2006 (s) syn. Monadenium kundelunguense
*''[[Euphorbia kuriensis]]'' [[Vierh.]] 1905 (s)
*''[[Euphorbia kurtzii]]'' [[Subils]] 1971

==L==
{{compactTOC2}}
*''[[Euphorbia labatii]]'' [[Rauh]] & [[Bard.-Vauc.]] 1999 (s)
*''[[Euphorbia lacei]]'' [[Craib]] 1911 (s)
*''[[Euphorbia lacera]]'' [[Boiss.]] 1860
*''[[Euphorbia laciniata]]'' [[Panigrahi]] 1975
*''[[Euphorbia lactea]]'' [[Haw.]] 1812 (s) - Elkhorn, frilled fan, mottled spurge
*''[[Euphorbia lactiflua]]'' [[Rodolfo Amando Philippi|Phil.]] 1860 (s)
*''[[Euphorbia laevigata]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788
*''[[Euphorbia lagascae]]'' [[Spreng.]] 1821
*''[[Euphorbia lagunensis]]'' [[Huft]] 1985
*''[[Euphorbia laikipiensis]]'' [[S.Carter]] 1987
*''[[Euphorbia lamarckii]]'' [[Sweet]] 1818 (s)
*''[[Euphorbia lambii]]'' [[Svent.]] 1960 (s)
*''[[Euphorbia lancasteriana]]'' [[Radcl.-Sm.]] 1999
*''[[Euphorbia lancifolia]] '' [[Schltdl.]] 1832 (s) – Ixbut
*''[[Euphorbia laredana]]'' [[Millsp.]] 1890
*''[[Euphorbia larica]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia larranagae]]'' [[Oudejans]] 1989
*''[[Euphorbia lasiocarpa]]'' [[Klotzsch]] 1843
*''[[Euphorbia lata]]'' [[Engelm.]] 1858
*''[[Euphorbia latazi]]'' [[Carl Sigismund Kunth|Kunth]] 1817
*''[[Euphorbia latericolor]]'' [[Brandegee]] 1913 (s)
*''[[Euphorbia lateriflora]]'' [[Schumach.]] & [[Thonn.]] 1829 (s)
*''[[Euphorbia lathyris]]'' [[Carolus Linnaeus|L.]] 1753 - Caper spurge, gopher spurge
*''[[Euphorbia latifolia]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1830
*''[[Euphorbia laurifolia]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788 (s)
*''[[Euphorbia lavicola]]'' [[S.Carter]] 1980 (s)
*''[[Euphorbia lavrani]]'' [[L.C.Leach]] 1981 (s)
*''[[Euphorbia laxa]]'' [[Emmanuel Drake del Castillo|Drake]] 1900
*''[[Euphorbia leandriana]]'' [[Boiteau]] 1942 (s)
*''[[Euphorbia lecheoides]]'' [[Millsp.]] 1906
**''[[Euphorbia lecheoides var. lecheoides]]''
**''[[Euphorbia lecheoides var. exumensis]]'' ([[Millsp.]]) [[Oudejans]] 1992
**''[[Euphorbia lecheoides var. wilsonii]]'' ([[Millsp.]]) [[Oudejans]] 1992
*''[[Euphorbia ledermanniana]]'' [[Ferdinand Albin Pax|Pax]] & [[K.Hoffmann]] 1910 (s)
*''[[Euphorbia ledienii]]'' [[A.Berger]] 1906 (s)
**''[[Euphorbia ledienii var. dregei]]'' [[N.E.Br.]] 1915 (s)
**''[[Euphorbia ledienii var. ledienii]]'' (s)
*''[[Euphorbia leistneri]]'' [[R.H.Archer]] 1998 (s)
*''[[Euphorbia lemaireana]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia lenensis]]'' [[K.S.Baikov]] 1996
*''[[Euphorbia lenewtonii]]'' [[S.Carter]] 2000 (s)
*''[[Euphorbia leonardii]]'' ([[D.G.Burch]]) [[Radcl.-Sm.]] 1971
*''[[Euphorbia leoncroizatii]]'' [[Oudejans]] 1989
*''[[Euphorbia leonensis]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia leontopoda]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia leptocaula]]'' [[Boiss.]] 1862
*''[[Euphorbia leptoclada]]'' [[Balf.f.]] 1883 (s)
*''[[Euphorbia leshumensis]]'' [[N.E.Br.]] 1911
*''[[Euphorbia letestuana]]'' ([[Denis]]) [[Bruyns]] 2006 (s) syn. Monadenium letestuanum
*''[[Euphorbia letestui]]'' [[J.Raynal]] 1966 (s)
*''[[Euphorbia leucantha]] '' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia leucocephala]]'' [[Lotsy]] 1985 (s) - Pascuita, white-laced euphorbia
*''[[Euphorbia leucochlamys]]'' [[Chiov.]] 1929 (s)
*''[[Euphorbia leucodendron]]'' [[Emmanuel Drake del Castillo|Drake]] 1903 (s)
**''[[Euphorbia leucodendron ssp. leucodendron]]'' (s)
**''[[Euphorbia leucodendron ssp. oncoclada]]'' ([[Emmanuel Drake del Castillo|Drake]]) [[Rauh]] & [[Koutnik]] 1998 (s)
*''[[Euphorbia leuconeura]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia leucophylla]]'' [[George Bentham|Benth.]] 1844 (s)
**''[[Euphorbia leucophylla ssp. comcaacorum]]'' [[V.W.Steinm.]] & [[Felger]] 1997 (s)
**''[[Euphorbia leucophylla ssp. leucophylla]]'' (s)
*''[[Euphorbia levis]]'' [[Poir.]] 1812
*''[[Euphorbia lignosa]]'' [[Marloth]] 1909 (s)
*''[[Euphorbia ligularia]]'' [[Roxb.]] 1832
*''[[Euphorbia ligustrina]]'' [[Boiss.]] 1860
*''[[Euphorbia limaensis]]'' [[Oudejans]] 1989
*''[[Euphorbia limpopoana]]'' [[S.Carter]] 1999 (s)
*''[[Euphorbia lindenii]]'' ([[S.Carter]]) [[Bruyns]] 2006 (s) syn. Monadenium lindenii
*''[[Euphorbia linearibracteata]]'' [[L.C.Leach]] 1973 (s)
*''[[Euphorbia lineata]]'' [[S.Watson]] 1886
*''[[Euphorbia lingiana]]'' [[C.Shih]] ex [[Chun]] 1963
*''[[Euphorbia linguiformis]]'' [[McVaugh]] 1961
**''[[Euphorbia linguiformis var. actinadenia]]'' ([[McVaugh]]) [[Oudejans]] 1993
**''[[Euphorbia linguiformis var. linguiformis]]''
*''[[Euphorbia lingulata]]'' [[Heuff.]] 1835
*''[[Euphorbia linifolia]]'' [[Carolus Linnaeus|L.]] 1759
*''[[Euphorbia lipskyi]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia lissosperma]]'' [[S.Carter]] 1980
*''[[Euphorbia liukiuensis]]'' [[Hayata]] 1920
*''[[Euphorbia livida]]'' [[E.Mey.]] ex [[Boiss.]] 1862
*''[[Euphorbia lividiflora]]'' [[L.C.Leach]] 1964 (s)
*''[[Euphorbia loadensis]]'' [[N.E.Br.]] 1911
*''[[Euphorbia lomelii]]'' [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus macrocarpus
*''[[Euphorbia longecorniculata]]'' [[Kitam.]] 1958
*''[[Euphorbia longecornuta]]'' [[S.Watson]] 1889
*''[[Euphorbia longicruris]] '' [[Scheele]] 1849 - Wedgeleaf spurge
*''[[Euphorbia longifolia]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788 (s)
*''[[Euphorbia longinsulicola]]'' [[S.R.Hill]] 1976 (s)
*''[[Euphorbia longispina]]'' [[Chiov.]] 1929 (s)
*''[[Euphorbia longistyla]]'' [[Boiss.]] 1860
*''[[Euphorbia longituberculosa]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia lophiosperma]]'' [[S.Carter]] 1984
*''[[Euphorbia lophogona]]''[[Jean-Baptiste Lamarck|Lam.]] 1788 (s) – Randramboay
**''[[Euphorbia lophogona var. lophogona]]'' (s)
**''[[Euphorbia lophogona var. tenuicaulis]]''[[Rauh]] 1991 (s)
*''[[Euphorbia loricata]]''[[Jean-Baptiste Lamarck|Lam.]] 1788 (s)
*''[[Euphorbia louwii]]'' [[L.C.Leach]] 1980 (s)
*''[[Euphorbia luapulana]]'' [[L.C.Leach]] 1992 (s)
*''[[Euphorbia lucida]]'' [[Waldst.]] & [[Kit.]] 1802 - Shining spurge
*''[[Euphorbia luciismithii]]'' [[B.L.Rob.]] & [[Greenm.]] 1896 (s)
*''[[Euphorbia lucorum]]'' [[Rupr.]] 1859
*''[[Euphorbia ludoviciana]]'' [[Constantine Samuel Rafinesque-Schmaltz|Raf.]] 1817
*''[[Euphorbia lugardiae]]'' ([[N.E.Br.]]) [[Bruyns]] 2006 (s) syn. Monadenium lugardiae
*''[[Euphorbia lukoseana]]'' [[S.Carter]] 2000 (s)
*''[[Euphorbia lumbricalis]]'' [[L.C.Leach]] 1986 (s)
*''[[Euphorbia lundelliana]]'' [[Croizat]] ex [[Lundell]] 1943 (s)
*''[[Euphorbia lunulata]]'' [[Alexander G. von Bunge|Bunge]] 1833
*''[[Euphorbia lupatensis]]'' [[N.E.Br.]] 1911
*''[[Euphorbia lupulina]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia lurida]]'' [[Engelm.]] 1861
*''[[Euphorbia luteoviridis]]'' [[D.G.Long]] 1986
*''[[Euphorbia luticola]]'' [[Hand.-Mazz.]] 1931
*''[[Euphorbia lutosa]]'' [[S.Carter]] 1980
*''[[Euphorbia lutulenta]]'' ([[Croizat]]) [[Oudejans]] 1989
*''[[Euphorbia luzoniensis]]'' [[E.D.Merrill]] 1920
*''[[Euphorbia lycioides]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia lydenburgensis]]'' [[Schweik.]] & [[Letty]] 1933 (s)

==M==
{{compactTOC2}}
*''[[Euphorbia macella]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia macgillivrayi]]'' [[Boiss.]] 1927
*''[[Euphorbia machrisiae]]'' [[Steyerm.]] 1958
*''[[Euphorbia macinensis]]'' [[Prodan]] 1953
*''[[Euphorbia macra]]'' [[Hiern]] 1900
*''[[Euphorbia macraulonia]]'' [[Rodolfo Amando Philippi|Phil.]] 1895 (s)
*''[[Euphorbia macrocarpa]]'' [[Boiss.]] 1860
*''[[Euphorbia macroceras]]'' [[Friedrich Ernst Ludwig von Fischer|Fisch.]] & [[C.A.Mey.]] 1838
*''[[Euphorbia macroclada]]'' [[Boiss.]] 1844
*''[[Euphorbia macroglypha]]'' [[Lem.]] 1857 (s)
*''[[Euphorbia macrophylla]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
*''[[Euphorbia macropodoides]]'' [[B.L.Rob.]] & [[Greenm.]] 1895 (s)
*''[[Euphorbia macropus]]'' ([[Klotzsch]] & [[Garcke]]) [[Boiss.]] 1862 (s) - Huachuca mountain spurge
*''[[Euphorbia macrorrhiza]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1830
*''[[Euphorbia maculata]] '' [[Carolus Linnaeus|L.]] 1753 (s) - Spotted spurge
*''[[Euphorbia macvaughiana]]'' [[M.C.Johnst.]] 1975
*''[[Euphorbia macvaughii]]'' [[Carvajal]] & [[Lomeli]] ex [[Carvajal]] 1981
*''[[Euphorbia maddenii]]'' [[Boiss.]] 1862
*''[[Euphorbia mafingensis]]'' ([[Hargreaves]]) [[Bruyns]] 2006 (s) syn. Monadenium mafingense
*''[[Euphorbia magdalenae]]'' [[George Bentham|Benth.]] 1844 (s)
*''[[Euphorbia magnicapsula]]'' [[S.Carter]] 1987 (s)
**''[[Euphorbia magnicapsula var. lacterosa]]'' [[S.Carter]] 1987 (s)
**''[[Euphorbia magnicapsula var. magnicapsula]]'' (s)
*''[[Euphorbia magnifica]]'' ([[E.A.Bruce]]) [[Bruyns]] 2006 (s) syn. Monadenium magnificum
*''[[Euphorbia mahabobokensis]]'' [[Rauh]] 1995 (s)
*''[[Euphorbia mahafalensis]]'' [[Denis]] 1921 (s)
**''[[Euphorbia mahafalensis var. mahafalensis]]'' (s)
**''[[Euphorbia mahafalensis var. xanthadenia]]'' ([[Denis]]) [[Leandri]] 1946 (s)
*''[[Euphorbia mainty]]'' [[Denis]] ex [[Leandri]] 1966 (s)
*''[[Euphorbia maieri]]'' [[H.Lév.]] 1913
*''[[Euphorbia makallensis]]'' [[S.Carter]] 1981 (s)
*''[[Euphorbia maleolens]]'' [[Phillips]] 1932 (s)
*''[[Euphorbia malevola]]'' [[L.C.Leach]] 1964 (s)
*''[[Euphorbia malleata]]'' [[Boiss.]] 1862
*''[[Euphorbia malurensis]]'' [[Rech.f.]] 1963
*''[[Euphorbia malvana]]'' [[Maire]] 1940
*''[[Euphorbia mamfwensis]]'' ([[Malaisse]] & [[Lecron]]) [[Bruyns]] 2006 (s) syn. Monadenium mamfwense
*''[[Euphorbia mammillaris]]'' [[Carolus Linnaeus|L.]] 1753 (s) - Corn cob euphorbia
*''[[Euphorbia mananarenis]]'' [[Leandri]] 1945 (s)
*''[[Euphorbia mancinella]]'' [[Baillon]] 1886
*''[[Euphorbia mandrariensis]]'' [[Emmanuel Drake del Castillo|Drake]] 1899 (s)
*''[[Euphorbia mandravioky]]'' [[Leandri]] 1958 (s)
*''[[Euphorbia mandshurica]]'' [[Maxim.]] 1883
*''[[Euphorbia mangleti]]'' [[Urb.]] 1930
*''[[Euphorbia mangelsdorffii]]'' [[Rauh]] 1998 (s)
*''[[Euphorbia mangokyensis]]'' [[Denis]] 1921 (s)
*''[[Euphorbia mangorensis]]'' [[Leandri]] 1945
*''[[Euphorbia marayensis]]'' [[Subils]] 1975
*''[[Euphorbia maresii]]'' [[Knoche]] 1922
*''[[Euphorbia margalidiana]]'' ;[[Kuhbier]] & [[Lewej.]] ex [[Kuhbier]] 1978 (s)
*''[[Euphorbia margaretae]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia marginata]]'' [[Pursh]] 1814 - Snow-on-the-mountain, variegated spurge, white-margined spurge
*''[[Euphorbia marianoi]]'' [[Oudejans]] 1998
*''[[Euphorbia marilandica]]'' [[Edward Lee Greene|Greene]] 1898
*''[[Euphorbia maritae]]'' [[Rauh]] 1999 (s)
*''[[Euphorbia marlothiana]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia marrupana]]'' [[Bruyns]] 2006 (s)
*''[[Euphorbia marsabitensis]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia marshalliana]]'' [[Boiss.]] 1946
**''[[Euphorbia marshalliana ssp. marshalliana]]''
**''[[Euphorbia marshalliana ssp. armenae]]'' ([[Prokh.]]) [[Oudejans]] 1992
*''[[Euphorbia martinae]]'' [[Rauh]] 1999 (s)
*''[[Euphorbia masirahensis]]'' [[S.A.Ghazanfar]] 1993 (s)
*''[[Euphorbia matabelensis]]'' [[Ferdinand Albin Pax|Pax]] 1901 (s)
*''[[Euphorbia matritensis]]'' [[Boiss.]] 1860
*''[[Euphorbia mauritanica]] '' [[Carolus Linnaeus|L.]] 1753 (s)
**''[[Euphorbia mauritanica var. corallothamnus]]'' [[Dinter]] ex [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
**''[[Euphorbia mauritanica var. foetens]]'' [[Dinter]] ex [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
**''[[Euphorbia mauritanica var. lignosa]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
**''[[Euphorbia mauritanica var. mauritanica]] '' (s)
**''[[Euphorbia mauritanica var. minor]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
**''[[Euphorbia mauritanica var. namaquensis]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia maysillesii]]'' [[McVaugh]] 1961
*''[[Euphorbia mayuranathanii]]'' [[Croizat]] 1940 (s)
*''[[Euphorbia mazarronensis]]'' [[Esteve Chueca]] 1967
*''[[Euphorbia mazatlamensis]]'' [[Oudejans]] 1989
*''[[Euphorbia mazicum]]'' [[Emb.]] & [[Maire]] 1929
*''[[Euphorbia medicaginea]]'' [[Boiss.]] 1838
*''[[Euphorbia meenae]]'' [[S.Carter]] 2000 (s)
*''[[Euphorbia megalatlantica]]'' [[J.Ball]] 1875
*''[[Euphorbia megalocarpa]]'' [[Rech.f.]] 1963
*''[[Euphorbia melanadenia]]'' [[Torr.]] 1857
*''[[Euphorbia melanocarpa]]'' [[Boiss.]] 1862
*''[[Euphorbia melanohydrata]]'' [[Nel]] 1935 (s)
*''[[Euphorbia melapetala]]'' [[Gasparr.]] 1830
*''[[Euphorbia melitensis]]'' [[Parl.]] 1869 (s)
*''[[Euphorbia meloformis]]'' [[Ait.]] 1789 (s)
**''[[Euphorbia meloformis ssp. meloformis]]'' (s) - Melon spurge
**''[[Euphorbia meloformis ssp. valida]]'' ([[N.E.Br.]]) [[G.D.Rowley]] 1998 (s)
*''[[Euphorbia memoralis]]'' [[R.A.Dyer]] 1952 (s)
*''[[Euphorbia mendezii]]'' [[Boiss.]] 1860
*''[[Euphorbia menelikii]]'' [[Ferdinand Albin Pax|Pax]] 1907
*''[[Euphorbia mercurialina]]'' [[Michx.]] 1803 - Mercury spurge
*''[[Euphorbia meridensis]]'' [[Pittier]] 1929
*''[[Euphorbia meridionalis]]'' [[P.R.O.Bally]] & [[S.Carter]] 1982 (s)
*''[[Euphorbia mertonii]]'' [[Fosberg]] 1978
*''[[Euphorbia mesembryanthemifolia]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1760 (s)
*''[[Euphorbia meuleniana]]'' [[Schwartz]] 1939 (s)
*''[[Euphorbia meuselii]]'' [[Geltman]] 2002
*''[[Euphorbia mexiae]]'' [[Standl.]] 1929
*''[[Euphorbia meyeniana]]'' [[Klotzsch]] 1843
*''[[Euphorbia meyeriana]]'' [[Galushko]] 1970
*''[[Euphorbia micracantha]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia micractina]]'' [[Boiss.]] 1862
*''[[Euphorbia micradenia]]'' [[Boiss.]] 1862
*''[[Euphorbia microcarpa]]'' ([[Prokh.]]) [[P.Klylov]] 1934
*''[[Euphorbia microcephala]]'' [[Boiss.]] 1866
*''[[Euphorbia microclada]]'' [[Urb.]] 1924
*''[[Euphorbia micromera]]'' [[Boiss.]] ex [[Engelm.]] 1861
*''[[Euphorbia microsciadia]]'' [[Boiss.]] 1846
*''[[Euphorbia microsperma]]'' ([[Murb.]]) [[Maly]] 1949
*''[[Euphorbia microsphaera]]'' [[Boiss.]] 1846
*''[[Euphorbia migiurtinorum]]'' [[Chiov.]] 1929 (s)
*''[[Euphorbia milii]]'' [[Desmoul.]] 1826 (s) - Crown-of-thorns, christplant
**''[[Euphorbia milii var. bevilaniensis]]'' ([[Croizat]]) [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia milii var. hislopii]]'' ([[N.E.Br.]]) [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia milii var. imperatae]]'' ([[Leandri]]) [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia milii var. longifolia]]'' [[Rauh]] 1967 (s)
**''[[Euphorbia milii var. milii]]''
**''[[Euphorbia milii var. roseana]]'' [[Marn.-Lap.]] 1962 (s)
**''[[Euphorbia milii var. splendens]]'' ([[Bojer]] ex [[Hook.]]) [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia milii var. tananarivae]]'' ([[Leandri]]) [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia milii var. tenuispina]]'' [[Rauh]] & [[Razaf.]] 1991 (s)
**''[[Euphorbia milii var. tulearensis]]'' [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia milii var. vulcanii]]'' ([[Leandri]]) [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia millotii]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia minbuensis]]'' [[Gage]] 1914
*''[[Euphorbia minuta]]'' [[Losc.]] & [[Pard.]] 1863
**''[[Euphorbia minuta ssp. minuta]]''
**''[[Euphorbia minuta ssp. moleroi]]'' [[P.Montserrat Recoder]] & [[J.V.Ferrández Palacio]] 1998
*''[[Euphorbia minutifolia]]'' [[Boiss.]] 1866
*''[[Euphorbia minutula]]'' [[Boiss.]] 1866
*''[[Euphorbia minxianensis]]'' [[W.T.Wang]] 1988
*''[[Euphorbia mira]]'' [[L.C.Leach]] 1986 (s)
*''[[Euphorbia misella]]'' [[S.Watson]] 1891
*''[[Euphorbia misera]]'' [[George Bentham|Benth.]] 1844 (s) - Cliff spurge
*''[[Euphorbia missurica]]'' [[Constantine Samuel Rafinesque-Schmaltz|Raf.]] 1832
*''[[Euphorbia mitchelliana]]'' [[Boiss.]] 1862
*''[[Euphorbia mitriformis]]'' [[P.R.O.Bally]] & [[S.Carter]] 1976 (s)
*''[[Euphorbia mixta]]'' [[N.E.Br.]] 1925 (s)
*''[[Euphorbia mlanjeana]]'' [[L.C.Leach]] 1973 (s)
*''[[Euphorbia mocinoi]]'' [[Oudejans]] 1989
*''[[Euphorbia moehringioides]]'' [[Ferdinand Albin Pax|Pax]] 1899
*''[[Euphorbia monacantha]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
*''[[Euphorbia monadenoides]]'' [[M.G.Gilbert]] 1987 (s)
*''[[Euphorbia monantha]]'' [[C.Wright]] ex [[Boiss.]] 1862
*''[[Euphorbia monchiquensis]]'' [[Franco]] & [[P.Silva]] 1968
*''[[Euphorbia monensis]]'' ([[Millsp.]]) [[Urb.]] 1929
*''[[Euphorbia mongolica]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia monostyla]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia monteiri]]'' [[Hook.f.]] 1865 (s)
**''[[Euphorbia monteiri ssp. brandbergensis]]'' [[B.Nord.]] 1974 (s)
**''[[Euphorbia monteiri ssp. monteiri]]'' (s)
**''[[Euphorbia monteiri ssp. ramosa]]'' [[L.C.Leach]] 1966 (s)
*''[[Euphorbia montenegrina]]'' ([[Baldacci]]) [[Maly]] 1908
*''[[Euphorbia moratii]]'' [[Rauh]] 1970 (s)
**''[[Euphorbia moratii var. antsingiensis]]'' [[Cremers]] 1984 (s)
**''[[Euphorbia moratii var. bemaharensis]]'' [[Cremers]] 1984 (s)
**''[[Euphorbia moratii var. moratii]]'' (s)
**''[[Euphorbia moratii var. multiflora]]'' [[Rauh]] 1991 (s)
*''[[Euphorbia mosaica]]'' [[P.R.O.Bally]] & [[S.Carter]] 1976 (s)
*''[[Euphorbia mossambicensis]]'' ([[Klotzsch]] & [[Garcke]]) [[Boiss.]] 1862
*''[[Euphorbia mossamedensis]]'' [[N.E.Br.]] 1913
*''[[Euphorbia mucronulata]]'' ([[Prokh.]]) [[Prokh.]] 1937
*''[[Euphorbia muelleri]]'' [[Boiss.]] 1862
*''[[Euphorbia muirii]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia multiceps]]'' [[A.Berger]] 1905 (s)
*''[[Euphorbia multiclava]]'' [[P.R.O.Bally]] & [[S.Carter]] 1974 (s)
*''[[Euphorbia multifida]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia multifolia]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia multifoliosa]]'' [[M.E.Jones]] 1933
*''[[Euphorbia multiformis]]'' [[Hook.]] & [[Arn.]] 1832
*''[[Euphorbia multifurcata]]'' [[Rech.f.]], [[Aellen]] & [[Esfand.]] ex [[Rech.f.]] 1951
*''[[Euphorbia multinodis]]'' [[Urb.]] 1899
*''[[Euphorbia multiseta]]'' [[George Bentham|Benth.]] 1840
*''[[Euphorbia mundtii]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia munizii]]'' [[Borhidi]] 1972 (s)
*''[[Euphorbia muraltioides]]'' [[N.E.Br.]] 1915
*''[[Euphorbia muricata]]'' [[Thunb.]] 1800
*''[[Euphorbia musciola]]'' [[Fernald]] 1901 (s)
*''[[Euphorbia musili]]'' [[Velen.]] 1912
*''[[Euphorbia mwinilungensis]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia myrioclada]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia myrsinites]]'' [[Carolus Linnaeus|L.]] 1753 (s) - Creeping spurge, donkey tail, myrtle spurge
**''[[Euphorbia myrsinites ssp. myrsinites]]'' (s)
**''[[Euphorbia myrsinites ssp. pontica]]'' ([[Prokh.]]) [[R.Turner]] 1995 (s)
**''[[Euphorbia myrsinites ssp. rechingeri]]'' ([[Greuter]]) [[Aldén]] 1986 (s)
*''[[Euphorbia myrtillifolia]]'' [[Carolus Linnaeus|L.]] 1759
*''[[Euphorbia myrtoides]]'' [[Boiss.]] 1862

==N==
{{compactTOC2}}
*''[[Euphorbia nagleri]] '' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia namibiensis]]'' [[Marloth]] 1909 (s)
*''[[Euphorbia namuliensis]]'' [[Bruyns]] 2006 (s)
*''[[Euphorbia namuskluftensis]]'' [[L.C.Leach]] 1983 (s)
*''[[Euphorbia natalensis]]'' [[Bernh.]] ex [[Krauss]] 1844
*''[[Euphorbia nayarensis]]'' [[V.W.Steinm.]] 2001
*''[[Euphorbia nealleyi]]'' [[Coult.]] & [[Fisher]] 1892
*''[[Euphorbia nebrownii]]'' [[Merr.]] 1938
*''[[Euphorbia negromontana]]'' [[N.E.Br.]] 1911
*''[[Euphorbia neilmulleri]]'' [[M.C.Johnst.]] 1975
*''[[Euphorbia nematocypha]]'' [[Hand.-Mazz.]] 1926
*''[[Euphorbia neoangolensis]]'' [[Bruyns]] 2006 (s) syn. Monadenium angolense
*''[[Euphorbia neoarborescens]]'' [[Bruyns]] 2006 (s) syn. Monadenium arborescens
*''[[Euphorbia neobosseri]]'' [[Rauh]] 1992 (s)
**''[[Euphorbia neobosseri var. itampolensis]]'' [[Rauh]] 1999 (s)
**''[[Euphorbia neobosseri var. neobosseri]]'' (s)
*''[[Euphorbia neocaledonica]]'' [[Boiss.]] 1866
*''[[Euphorbia neocapitata]]'' [[Bruyns]] 2006 (s) syn. Monadenium capitatum
*''[[Euphorbia neococcinea]]'' [[Bruyns]] 2006 (s) syn. Monadenium coccineum
*''[[Euphorbia neocrispa]]'' [[Bruyns]] 2006 (s) syn. Monadenium crispum
*''[[Euphorbia neocymosa]]'' [[Bruyns]] 2006 (s) syn. Synadenium cymosum
*''[[Euphorbia neoerubescens]]'' [[Bruyns]] 2006 (s) syn. Lortia erubescens / Monadenium erubescens
*''[[Euphorbia neogillettii]]'' [[Bruyns]] 2006 (s) syn. Monadenium gillettii
*''[[Euphorbia neoglabrata]]'' [[Bruyns]] 2006 (s) syn. Synadenium glabratum
*''[[Euphorbia neoglaucescens]]'' [[Bruyns]] 2006 (s) syn. Synadenium glaucescens
*''[[Euphorbia neogoetzei]]'' [[Bruyns]] 2006 (s) syn. Monadenium goetzei
*''[[Euphorbia neogossweileri]]'' [[Bruyns]] 2006 (s) syn. Monadenium gossweileri / Endadenium gossweileri
*''[[Euphorbia neogracilis]]'' [[Bruyns]] 2006 (s) syn. Monadenium gracile
*''[[Euphorbia neohalipedicola]]'' [[Bruyns]] 2006 (s) syn. Synadenium halipedicola
*''[[Euphorbia neohumbertii]]'' [[Boiteau]] 1942 (s)
*''[[Euphorbia neomontana]]'' [[Bruyns]] 2006 (s) syn. Monadenium montanum
*''[[Euphorbia neoparviflora]]'' [[Bruyns]] 2006 (s) syn. Monadenium parviflorum
*''[[Euphorbia neopedunculata]]'' [[Bruyns]] 2006 (s) syn. Monadenium pedunculatum
*''[[Euphorbia neopolycnemoides]]'' [[Ferdinand Albin Pax|Pax]] & [[K.Hoffmann]] 1910
*''[[Euphorbia neoreflexa]]'' [[Bruyns]] 2006 (s) syn. Monadenium reflexum
*''[[Euphorbia neorubella]]'' [[Bruyns]] 2006 (s) syn. Monadenium montanum var. rubellum / Monadenium rubellum
*''[[Euphorbia neorugosa]]'' [[Bruyns]] 2006 (s) syn. Monadenium rugosum
*''[[Euphorbia neospinescens]]'' [[Bruyns]] 2006 (s) syn. Stenadenium spinescens / Monadenium spinescens
*''[[Euphorbia neostapeliodes]]'' [[Bruyns]] 2006 (s) syn. Monadenium stapelioides
**''[[Euphorbia neostapeliodes var. congesta]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium stapelioides var. congestum
**''[[Euphorbia neostapeliodes var. neostapeliodes]]'' (s) syn. Monadenium stapelioides var. stapelioides
*''[[Euphorbia neostolonifera]]'' [[Bruyns]] 2006 (s) syn. Monadenium rhizophorum var. stoloniferum / Monadenium stoloniferum
*''[[Euphorbia neovirgata]]'' [[Bruyns]] 2006 (s) syn. Monadenium virgatum
*''[[Euphorbia nephradenia]] '' [[Barneby]] 1966 - Pana spurge
*''[[Euphorbia nereidum]]'' [[Jahandiez]] & [[Maire]] 1923
*''[[Euphorbia neriifolia]]'' [[Carolus Linnaeus|L.]] 1753 (s) - Indian spurgetree, hedge euphorbia
*''[[Euphorbia nesemannii]]'' [[R.A.Dyer]] 1934 (s)
*''[[Euphorbia nevadensis]]'' [[Boiss.]] & [[Reut.]] 1852
*''[[Euphorbia nicaeensis]]'' [[All.]] 1785
**''[[Euphorbia nicaeensis ssp. glareosa]]'' ([[Pall.]] ex [[M.Bieb.]]) [[Radcl.-Sm.]] 1785
**''[[Euphorbia nicaeensis ssp. cadrilateri]]'' ([[Prod.]]) [[B.Kuzmanov]] 1979
**''[[Euphorbia nicaeensis ssp. goldei]]'' ([[Prod.]]) [[Greuter]] & [[Burdet]] 1981
**''[[Euphorbia nicaeensis ssp. lasiocarpa]]'' ([[Boiss.]]) [[Radcl.-Sm.]] & [[Govaerts]] 1996
**''[[Euphorbia nicaeensis ssp. latibracteata]]'' ([[Prod.]]) [[B.Kuzmanov]] 1979
**''[[Euphorbia nicaeensis ssp. maleevii]]'' ([[Tamamshyan]]) [[Oudejans]] 1989
**''[[Euphorbia nicaeensis ssp. nicaeensis]]''
**''[[Euphorbia nicaeensis ssp. prostrata]]'' ([[Fiori]]) [[Arrigoni]] 1981
**''[[Euphorbia nicaeensis ssp. stepposa]]'' ([[Zoz]]) [[Greuter]] & [[Burdet]] 1981
**''[[Euphorbia nicaeensis ssp. volgensis]]'' ([[Krysht.]]) [[Oudejans]] 1992
*''[[Euphorbia nicholasii]]'' [[Oudejans]] 1989
*''[[Euphorbia niciciana]]'' [[Borbás]] 1893
*''[[Euphorbia nigrispina]]'' [[N.E.Br.]] 1911
*''[[Euphorbia nigrispinoides]]'' [[M.G.Gilbert]] 1993 (s)
*''[[Euphorbia niqueroana]]'' [[Urb.]] 1930
*''[[Euphorbia nivulia]]'' [[Buch.-Ham.]] 1825 (s)
*''[[Euphorbia nocens]]'' ([[L.C.Wheeler]]) [[V.W.Steinm.]] 2003
*''[[Euphorbia nodosa]]'' [[Houtt.]] 1777
*''[[Euphorbia nogalensis]]'' ([[A.Hässl.]]) [[S.Carter]] 1988 (s)
*''[[Euphorbia norfolkiana]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia normannii]]'' [[Schmalh.]] ex [[Lipsky]] 1891
*''[[Euphorbia notoptera]]'' [[Boiss.]] 1862
*''[[Euphorbia novorossica]]'' [[Dubovik]] 1976
*''[[Euphorbia noxia]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
*''[[Euphorbia nubica]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia nubigena]]'' [[L.C.Leach]] 1976 (s)
**''[[Euphorbia nubigena var. nubigena]]'' (s)
**''[[Euphorbia nubigena var. rutilans]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia nudicaulis]] '' [[Perr.]] 1824 (s)
*''[[Euphorbia nummularia]]'' [[Hook.f.]] 1847
*''[[Euphorbia nutans]]'' [[Lag.]] 1816
*''[[Euphorbia nyassae]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
*''[[Euphorbia nyikae]]'' [[Ferdinand Albin Pax|Pax]] 1895 (s)
**''[[Euphorbia nyikae var. neovolkensii]]'' ([[Ferdinand Albin Pax|Pax]]) [[S.Carter]] 1987 (s)
**''[[Euphorbia nyikae var. nyikae]]'' (s)

==O==
{{compactTOC2}}
*''[[Euphorbia oatesii]]'' [[Rolfe]] 1889 (s)
*''[[Euphorbia oaxacana]]'' [[B.L.Rob.]] & [[Greenm.]] 1896 (s)
*''[[Euphorbia obconica]]'' [[Bojer]] ex [[N.E.Br.]] 1912
*''[[Euphorbia obcordata]]'' [[Balf.f.]] 1884 (s)
*''[[Euphorbia obesa]]'' [[Hook.f.]] 1903 (s)
**''[[Euphorbia obesa ssp. obesa]]'' (s)
**''[[Euphorbia obesa ssp. symmetrica]]'' ([[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]]) [[G.D.Rowley]] 1998 (s)
*''[[Euphorbia oblanceolata]]'' [[Balf.f.]] 1884 (s)
*''[[Euphorbia obliqua]]'' [[F.Bauer]] ex [[Endl.]] 1833
*''[[Euphorbia oblongata]] '' [[Griseb]] 1843 - Eggleaf spurge, oblong spurge
*''[[Euphorbia oblongifolia]]'' ([[K.Koch]]) [[K.Koch]] 1849
*''[[Euphorbia obovata]]'' [[Decne.]] 1834 (s)
*''[[Euphorbia obtusata]]'' [[Pursh]] 1814
*''[[Euphorbia occidentaustralica]]'' [[Radcl.-Sm.]] & [[Govaerts]] 1996
*''[[Euphorbia ocellata]]'' [[Durand]] & [[Hilg.]] 1854
**''[[Euphorbia ocellata ssp. arenicola]]'' ([[Parisch]]) [[Oudejans]] 1989
**''[[Euphorbia ocellata ssp. ocellata]]''
**''[[Euphorbia ocellata ssp. rattanii]]'' ([[S.Watson]]) [[Oudejans]] 1989
*''[[Euphorbia octoradiata]]'' [[H.Lév.]] & [[Vaniot]] ex [[H.Lév.]] 1908
*''[[Euphorbia ocymoidea]]'' [[Carolus Linnaeus|L.]] 1753
*''[[Euphorbia odontadenia]]'' [[Boiss.]] 1862
*''[[Euphorbia odontophora]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia oerstediana]] '' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862 - West Indian spurge
*''[[Euphorbia officinalis]]'' [[Peter Forsskål|Forssk.]] 1775
*''[[Euphorbia officinarum]]'' [[Carolus Linnaeus|L.]] 1753 (s)
*''[[Euphorbia ogadenensis]]'' [[P.R.O.Bally]] & [[S.Carter]] 1985 (s)
*''[[Euphorbia oidorhiza]]'' [[Pojark.]] 1951
*''[[Euphorbia oligoclada]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia olowaluana]]'' [[Sherff]] 1936
*''[[Euphorbia omariana]]'' [[M.G.Gilbert]] 1990 (s)
*''[[Euphorbia ophthalmica]]'' [[Rers.]] 1806
*''[[Euphorbia opuntioides]]'' [[Welw.]] ex [[Hiern]] 1900 (s)
*''[[Euphorbia orabensis]]'' [[Dinter]] 1914
*''[[Euphorbia oranensis]]'' ([[Croizat]]) [[Subils]] 1977
*''[[Euphorbia orbiculata]]'' [[Carl Sigismund Kunth|Kunth]] 1817
*''[[Euphorbia orbiculifolia]]'' [[S.Carter]] 1990 (s)
*''[[Euphorbia orbifolia]]'' ([[Alain]]) [[Oudejans]] 1989
*''[[Euphorbia orientalis]]'' [[Carolus Linnaeus|L.]] 1753
*''[[Euphorbia origanoides]]'' [[Carolus Linnaeus|L.]] 1753
*''[[Euphorbia orizabae]]'' [[Boiss.]] 1862
*''[[Euphorbia ornithopus]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1809 (s)
*''[[Euphorbia orobanchoides]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium orobanchoides
**''[[Euphorbia orobanchoides var. calycina]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium orobanchoides var. calycinum
**''[[Euphorbia orobanchoides var. orobanchoides]]'' (s) syn. Monadenium orobanchoides var. orobanchoides
*''[[Euphorbia orphanidis]]'' [[Boiss.]] 1859
*''[[Euphorbia orthoclada]]'' [[Baker]] 1887 (s)
**''[[Euphorbia orthoclada ssp. orthoclada]]'' (s)
**''[[Euphorbia orthoclada ssp. vepretorum]]'' ([[Emmanuel Drake del Castillo|Drake]]) [[Leandri]] 1962 (s)
*''[[Euphorbia oryctis]]'' [[Dinter]] 1931
*''[[Euphorbia oschtenica]]'' [[Galushko]] 1973
*''[[Euphorbia osyridae]]'' [[Boiss.]] 1846
*''[[Euphorbia osyridiformis]]'' [[Parsa]] 1848
*''[[Euphorbia otjipembana]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia ovalleana]]'' [[Rodolfo Amando Philippi|Phil.]] 1895
*''[[Euphorbia ovata]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia oxycoccoides]]'' [[Boiss.]] 1860
*''[[Euphorbia oxyodonta]]'' [[Boiss.]] & [[Hausskn.]] ex [[Boiss.]] 1866
*''[[Euphorbia oxyphylla]]'' [[Boiss.]] 1866 (s)
*''[[Euphorbia oxystegia]]'' [[Boiss.]] 1860 (s)

==P==
{{compactTOC2}}
*''[[Euphorbia pachyclada]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia pachypoda]]'' [[Urb.]] 1924
*''[[Euphorbia pachypodioides]]'' [[Boiteau]] 1942 (s)
*''[[Euphorbia pachyrrhiza]]'' [[Kar.]] & [[Kir.]] 1841
*''[[Euphorbia pachysantha]]'' [[Henri Ernest Baillon|Baill.]] 1886 (s)
*''[[Euphorbia paganorum]]'' [[A.Chev.]] 1948 (s)
*''[[Euphorbia palmeri]]'' [[Engelm.]] ex [[S.Watson]] 1880 - Wood spurge, woodland spurge
*''[[Euphorbia paludicola]]'' [[McVaugh]] 1961
*''[[Euphorbia palustris]]'' [[Carolus Linnaeus|L.]] 1753 - Marsh spurge
*''[[Euphorbia pamirica]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia pampeana]]'' [[Speg.]] 1893 (s)
*''[[Euphorbia pancheri]]'' [[Baillon]] 1861 (s)
*''[[Euphorbia panchganiensis]]'' [[Blatt.]] & [[McCann]] ex [[Blatt.]] 1931 (s)
*''[[Euphorbia pancicii]]'' [[G.Beck]] 1920
*''[[Euphorbia paniculata]]'' [[Desf.]] 1798
*''[[Euphorbia panjutinii]]'' [[Grossh.]] 1950
*''[[Euphorbia pantomalaca]]'' [[Standl.]] & [[Steyerm.]] 1944 (s)
*''[[Euphorbia papilionum]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia papillaris]]'' ([[Jan]] ex [[Boiss.]]) [[Raffaelli]] & [[Ricceri]] 1988 (s)
*''[[Euphorbia papillosa]]'' [[A.St.-Hil.]] 1824 (s)
**''[[Euphorbia papillosa var. erythrorrhiza]]'' ([[Boiss.]]) [[Subils]] 1971 (s)
**''[[Euphorbia papillosa var. papillosa]]'' (s)
*''[[Euphorbia papillosicapsa]]'' [[L.C.Leach]] 1975 (s)
*''[[Euphorbia paradoxa]]'' ([[Schur]]) [[Simonk.]] 1883
*''[[Euphorbia paralias]]'' [[Carolus Linnaeus|L.]] 1753 - Sea spurge
*''[[Euphorbia paranensis]]'' [[Dusén]] 1910
*''[[Euphorbia parciflora]]'' [[Urb.]] 1919
*''[[Euphorbia parciramulosa]]'' [[Schweinf.]] 1899 (s)
*''[[Euphorbia paredonensis]]'' ([[Millsp.]]) [[Oudejans]] 1989
*''[[Euphorbia parifolia]]'' [[N.E.Br.]] 1913
*''[[Euphorbia parishii]]'' [[Edward Lee Greene|Greene]] 1886
*''[[Euphorbia parodii]]'' [[Oudejans]] 1989
*''[[Euphorbia parryi]]'' [[Engelm.]] 1875
*''[[Euphorbia parva]]'' [[N.E.Br.]] 1911
*''[[Euphorbia parvicaruncula]]'' [[D.C.Hassall]] 1977 (s)
*''[[Euphorbia parviceps]]'' [[L.C.Leach]] 1974 (s)
*''[[Euphorbia parvicyathophora]]'' [[Rauh]] 1986 (s)
*''[[Euphorbia parviflora]]'' [[Carolus Linnaeus|L.]] 1759
*''[[Euphorbia parvula]]'' [[Delile]] 1813
*''[[Euphorbia patula]]'' [[P.Miller]] 1768
*''[[Euphorbia patentispina]]'' [[S.Carter]] 2002 (s)
*''[[Euphorbia paucipila]]'' [[Urb.]] 1908
*''[[Euphorbia pauciradiata]]'' [[Blatt.]] 1933
*''[[Euphorbia paulianii]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia paxiana]]'' [[Dinter]] 1921
*''[[Euphorbia pedemontana]]'' [[L.C.Leach]] 1988 (s)
*''[[Euphorbia pedersenii]]'' [[Subils]] 1971
*''[[Euphorbia pediculifera]]'' [[Engelm.]] 1858
*''[[Euphorbia pedilanthoides]]'' [[Denis]] 1921 (s)
*''[[Euphorbia pedroi]]'' [[Molero]] & [[Rovira]] 1997 (s)
*''[[Euphorbia peganoides]]'' [[Boiss.]] 1860
*''[[Euphorbia peisonis]]'' [[Rech.]] 1926
*''[[Euphorbia pekinensis]]'' [[Rupr.]] 1859
**''[[Euphorbia pekinensis ssp. asoensis]]'' [[Kurosawa]] & [[H.Ohashi]] 1994
**''[[Euphorbia pekinensis ssp. fauriei]]'' [[Kurosawa]] & [[H.Ohashi]] 1994
**''[[Euphorbia pekinensis ssp. lasiocaula]]'' [[Boiss.]] & [[Oudejans]] 1992
**''[[Euphorbia pekinensis ssp. pekinensis]]''
**''[[Euphorbia pekinensis ssp. pseudolucorum]]'' [[Hurus.]] & [[Oudejans]] 1992
**''[[Euphorbia pekinensis ssp. sinanensis]]'' [[Hurus.]] & [[Oudejans]] 1992
**''[[Euphorbia pekinensis ssp. subulatifolius]]'' [[Hurus.]] & [[T.B.Lee]] 1983
**''[[Euphorbia pekinensis ssp. watanabei]]'' [[Tomitaro Makino|Makino]] & [[Oudejans]] 1992
*''[[Euphorbia pellegrinii]]'' [[Leandri]] 1947
*''[[Euphorbia peltata]]'' [[Roxb.]] 1832
*''[[Euphorbia peninsularis]]'' [[I.M.Johnst.]] 1922
*''[[Euphorbia pentadactyla]]'' [[Griseb]] 1879
*''[[Euphorbia pentagona]]'' [[Haw.]] 1828 (s)
*''[[Euphorbia pentlandii]]'' [[Boiss.]] 1862
*''[[Euphorbia pentops]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia peperomioides]]'' [[Boiss.]] 1860
*''[[Euphorbia peplidion]]'' [[Engelm.]] 1858 - Low spurge
*''[[Euphorbia peplis]]'' [[Carolus Linnaeus|L.]] 1753 - Purple spurge
*''[[Euphorbia peplus]]'' [[Carolus Linnaeus|L.]] 1753 - Petty spurge
*''[[Euphorbia perangusta]]'' [[R.A.Dyer]] 1938 (s)
*''[[Euphorbia perangustifolia]]'' [[S.Carter]] 1984
*''[[Euphorbia perarmata]]'' [[S.Carter]]1992 (s)
*''[[Euphorbia perbracteata]]'' [[Gage]] 1914
*''[[Euphorbia perennans]]'' ([[Shinners]]) [[Warnock]] & [[I.M.Johnst.]] 1960
*''[[Euphorbia pereskiifolia]]'' [[Henri Ernest Baillon|Baill.]] 1860 (s) syn. Synadenium pereskiifolium
*''[[Euphorbia perfoliata]]'' [[Scheutz]] 1888
*''[[Euphorbia pergracilis]]'' [[P.G.Mey.]] 1966
*''[[Euphorbia peritropoides]]'' ([[Millsp.]]) [[V.W.Steinm.]] 2003 syn. Pedilanthus peritropoides
*''[[Euphorbia perlignea]]'' [[McVaugh]] 1961
*''[[Euphorbia perpera]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia perplexa]]'' [[L.C.Leach]] 1992 (s)
**''[[Euphorbia perplexa var. kasamana]]'' [[L.C.Leach]] 1992 (s)
**''[[Euphorbia perplexa var. perplexa]]'' (s)
*''[[Euphorbia perrieri]]'' [[Emmanuel Drake del Castillo|Drake]] 1899 (s)
**''[[Euphorbia perrieri var. elongata]]'' [[Denis]] 1921 (s)
**''[[Euphorbia perrieri var. perrieri]]'' (s)
*''[[Euphorbia persistentifolia]]'' [[L.C.Leach]] 1965 (s)
*''[[Euphorbia personata]]'' [[Croizat]] & [[V.W.Steinm.]] 2003 (s) syn. Pedilanthus personatus
*''[[Euphorbia peruviana]]'' [[L.C.Wheeler]] 1939
*''[[Euphorbia pervilleana]]'' [[Baillon]] 1861 (s)
*''[[Euphorbia pestalozzae]]'' [[Boiss.]] 1853
*''[[Euphorbia petala]]'' [[Ewart]] & [[L.R.Kerr]] 1926
*''[[Euphorbia pervittata]]'' [[S.Carter]] 2000 (s)
*''[[Euphorbia petiolaris]]'' [[Sims]] 1805 (s) - Manchineel berry
*''[[Euphorbia petiolata]]'' [[Joseph Banks|Banks]] & [[Sol.]] 1794
*''[[Euphorbia petitiana]]'' [[A.Rich.]] 1850
*''[[Euphorbia petraea]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia petricola]]'' [[P.R.O.Bally]] & [[S.Carter]] 1982 (s)
*''[[Euphorbia petrina]]'' [[S.Watson]] 1888
*''[[Euphorbia petrophila]]'' [[C.A.Mey.]] 1850
*''[[Euphorbia pettersonii]]'' [[Svent.]] 1949
*''[[Euphorbia pfeilii]]'' [[Ferdinand Albin Pax|Pax]] 1897
*''[[Euphorbia philippiana]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia phillipsiae]]'' [[N.E.Br.]] 1903 (s)
*''[[Euphorbia phillipsioides]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia phosphorea]]'' [[Carl Friedrich Philipp von Martius|Mart.]] 1828 (s)
*''[[Euphorbia phylloclada]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia phymatosperma]]'' [[Boiss.]] & [[Gaill.]] ex [[Boiss.]] 1859
**''[[Euphorbia phymatosperma ssp. cernua]]'' ([[Coss.]] & [[Durieu]]) [[Vindt]] 1953
**''[[Euphorbia phymatosperma ssp. phymatosperma]]''
*''[[Euphorbia physalifolia]]'' [[Boiss.]] 1860
*''[[Euphorbia phosocaulos]]'' [[Mouterde]] 1953
*''[[Euphorbia physoclada]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia picachensis]]'' [[Brandegee]] 1915
*''[[Euphorbia pillansii]]'' [[N.E.Br.]] 1913 (s)
**''[[Euphorbia pillansii var. albovirens]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
**''[[Euphorbia pillansii var. pillansii]]'' (s)
**''[[Euphorbia pillansii var. ramosissima]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia pilosa]]'' [[Carolus Linnaeus|L.]] 1753
**''[[Euphorbia pilosa ssp. ojensis]]'' [[Stepanov]] 1994
**''[[Euphorbia pilosa ssp. pilosa]]''
*''[[Euphorbia pilosissima]]'' [[S.Carter]] 1984
*''[[Euphorbia pinariona]]'' [[Urb.]] 1930
*''[[Euphorbia pinetorum]]'' ([[John Kunkel Small|Small]]) [[G.L.Webster]] 1913 - Pineland spurge
*''[[Euphorbia pinkavana]]'' [[I.M.Johnst.]] 1975
*''[[Euphorbia pionosperma]]'' [[V.W.Steinm.]] & [[Felger]] 1997
*''[[Euphorbia pirottae]]'' [[A.Terracc.]] 1894 (s)
*''[[Euphorbia piscatoria]]'' [[Ait.]] 1789 (s)
*''[[Euphorbia piscidermis]]'' [[M.G.Gilbert]] 1974 (s)
*''[[Euphorbia piscida]]'' [[Hub.-Mor.]] & [[M.S.Khan]] ex [[M.S.Khan]] 1964
*''[[Euphorbia pitcairnensis]]'' [[N.E.Br.]] 1935
*''[[Euphorbia pithyusa]]'' [[Carolus Linnaeus|L.]] 1953
**''[[Euphorbia pithyusa ssp. cupanii]]'' ([[Guss.]] ex [[Bertol.]]) [[Radcl.-Sm.]] 1968
**''[[Euphorbia pithyusa ssp. dianthifolia]]'' ([[Lojac.]]) [[Oudejans]] 1992
**''[[Euphorbia pithyusa ssp. pithyusa]]''
*''[[Euphorbia plagiantha]]'' [[Emmanuel Drake del Castillo|Drake]] 1903 (s) - Fish skin euphorb
*''[[Euphorbia planiceps]]'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941 (s)
*''[[Euphorbia planiticola]]'' [[D.C.Hassall]] 1977 (s)
*''[[Euphorbia platycephala]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
*''[[Euphorbia platyclada]]'' [[Rauh]] 1970 (s)
**''[[Euphorbia platyclada var. hardyi]]'' [[Rauh]] 1970 (s)
**''[[Euphorbia platyclada var. platyclada]]'' (s)
*''[[Euphorbia platyphyllos]]'' [[Carolus Linnaeus|L.]] 1753 - Broad-leaved spurge
*''[[Euphorbia platypoda]]'' [[Ferdinand Albin Pax|Pax]] 1912
*''[[Euphorbia platyrrhiza]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia platysperma]]'' [[Engelm.]] ex [[S.Watson]] 1880
*''[[Euphorbia plebeia]]'' [[Boiss.]] 1846
*''[[Euphorbia plenispina]]'' [[S.Carter]] 1999 (s)
*''[[Euphorbia plicata]]'' [[S.Watson]] 1886
*''[[Euphorbia plumerioides]]'' [[Teijsm.]] ex [[Hassk.]] 1858 (s)
*''[[Euphorbia plummeriae]]'' [[S.Watson]] 1883
*''[[Euphorbia podadenia]]'' [[Boiss.]] 1862
*''[[Euphorbia podocarpifolia]]'' [[Urb.]] 1924 (s)
*''[[Euphorbia poecilophylla]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia poeppigii]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia poissonii]]'' [[Ferdinand Albin Pax|Pax]] 1902 (s)
*''[[Euphorbia polyacantha]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia polyantha]]'' [[Ferdinand Albin Pax|Pax]] 1909 (s)
*''[[Euphorbia polycarpa]]'' [[George Bentham|Benth.]] 1844
*''[[Euphorbia polycephala]]'' [[Marloth]] 1931 (s)
*''[[Euphorbia polycnemoides]]'' [[Hochst.]] ex [[Boiss.]] 1862
*''[[Euphorbia polygalifolia]]'' [[Boiss.]] & [[Reut.]] ex [[Boiss.]] 1860
*''[[Euphorbia polygona]]'' [[Haw.]] 1803 (s)
*''[[Euphorbia polygonifolia]]'' [[Carolus Linnaeus|L.]] 1753
*''[[Euphorbia polyphylla]]'' [[Engelm.]] ex [[Holz.]] 1892 - Lesser Florida spurge
*''[[Euphorbia polytimetica]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia ponderosa]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia pondii]]'' [[Millsp.]] 1890
*''[[Euphorbia popayanensis]]'' [[Prokh.]] 1899
*''[[Euphorbia porphyrantha]]'' [[Rodolfo Amando Philippi|Phil.]] 1895 (s)
*''[[Euphorbia porphyrastra]]'' [[Hand.-Mazz.]] 1925
*''[[Euphorbia porteriana]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989
**''[[Euphorbia porteriana var. keyensis]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989
**''[[Euphorbia porteriana var. porteriana]]''
**''[[Euphorbia porteriana var. scoparia]]'' ([[John Kunkel Small|Small]]) [[Oudejans]] 1989
*''[[Euphorbia portlandica]]'' [[Carolus Linnaeus|L.]] 1753 - Portland spurge
*''[[Euphorbia portucasadiana]]'' ([[Croizat]]) [[Subils]] 1977
*''[[Euphorbia portulacoides]]'' [[Carolus Linnaeus|L.]] 1826 (s)
**''[[Euphorbia portulacoides ssp. collina]]'' ([[Rodolfo Amando Philippi|Phil.]]) [[Croizat]] 1943 (s)
**''[[Euphorbia portulacoides ssp. major]]'' ([[Müll.Arg.]]) [[Croizat]] 1943 (s)
**''[[Euphorbia portulacoides ssp. portulacoides]]'' (s)
*''[[Euphorbia postii]]'' [[Boiss.]] 1879
*''[[Euphorbia potanii]]'' [[Prokh.]] 1927
*''[[Euphorbia potentilloides]]'' [[Boiss.]] 1860
*''[[Euphorbia potosina]]'' [[Fernald]] 1901
*''[[Euphorbia prieuriana]]'' [[Baillon]] 1860
*''[[Euphorbia primulifolia]]'' [[Baker]] 1881 (s)
**''[[Euphorbia primulifolia var. begardii]]'' [[Cremers]] 1984 (s)
**''[[Euphorbia primulifolia var. primulifolia]]'' (s)
*''[[Euphorbia proballyana]]'' [[L.C.Leach]] 1968 (s)
**''[[Euphorbia proballyana var. multangula]]'' [[S.Carter]] 2000 (s)
**''[[Euphorbia proballyana var. proballyana]]'' (s)
*''[[Euphorbia proctorii]]'' ([[D.G.Burch]]) [[Correll]] 1980
*''[[Euphorbia prolifera]]'' [[Buch.-Ham.]] ex [[D.Don]] 1825
*''[[Euphorbia promeocarpa]]'' [[P.H.Davis]] 1947
*''[[Euphorbia prona]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia propingua]]'' [[N.E.Br.]] 1911
*''[[Euphorbia prostrata]]'' [[Ait.]] 1789
**''[[Euphorbia prostrata ssp. caudirhiza]]'' [[Fosberg]] 1992
**''[[Euphorbia prostrata ssp. prostrata]]''
*''[[Euphorbia przewalskii]]'' [[Prokh.]] 1927
*''[[Euphorbia psammophila]]'' [[Ule]] 1908 (s)
*''[[Euphorbia pseudagraria]]'' [[P.A.Smirn.]] 1940
*''[[Euphorbia pseudoapios]]'' [[Maire]] & [[Weiller]] 1939 (s)
*''[[Euphorbia pseudoburuana]]'' [[P.R.O.Bally]] & [[S.Carter]] 1982 (s)
*''[[Euphorbia pseudocactus]]'' [[A.Berger]] 1906 (s)
*''[[Euphorbia pseudodendroides]]'' [[H.Lindb.]] 1932
*''[[Euphorbia pseudoduseimata]]'' [[R.A.Dyer]] 1941 (s)
*''[[Euphorbia pseudofalcata]]'' [[Chiov.]] 1951
*''[[Euphorbia pseudofulva]]'' [[Faustino Miranda|Miranda]] 1950
*''[[Euphorbia pseudoglareosa]]'' [[Klokov]] 1955
*''[[Euphorbia pseudoglobosa]]'' [[Marloth]] 1936 (s)
*''[[Euphorbia pseudograntii]]'' [[Ferdinand Albin Pax|Pax]] 1901 (s)
*''[[Euphorbia pseudograntii]]'' [[Bruyns]] 2006 (s) (conflict!) syn. Synadenium grantii
*''[[Euphorbia pseudohirsuta]]'' [[Bruyns]] 2006 (s) syn. Monadenium hirsutum
*''[[Euphorbia pseudohypogaea]]'' [[Dinter]] 1921 (s)
*''[[Euphorbia pseudolaevis]]'' [[Bruyns]] 2006 (s) syn. Monadenium laeve
*''[[Euphorbia pseudolucida]]'' [[Schur]] 1852
*''[[Euphorbia pseudomollis]]'' [[Bruyns]] 2006 (s) syn. Synadenium molle
*''[[Euphorbia pseudonervosa]]'' [[Bruyns]] 2006 (s) syn. Monadenium nervosum
*''[[Euphorbia pseudonudicaulis]]'' [[Bruyns]] 2006 (s) syn. Monadenium nudicaule
*''[[Euphorbia pseudopetiolata]]'' [[Bruyns]] 2006 (s) syn. Monadenium petiolatum
*''[[Euphorbia pseudoracemosa]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium pseudoracemosum
**''[[Euphorbia pseudoracemosa var. lorifolia]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium pseudoracemosum var. lorifolium
**''[[Euphorbia pseudoracemosa var. pseudoracemosa]]'' (s) syn. Monadenium pseudoracemosum var. pseudoracemosum
*''[[Euphorbia pseudosikkimensis]]'' ([[Hurus.]] & [[Tanaka]]) [[Radcl.-Sm.]] 1981
*''[[Euphorbia pseudosimplex]]'' [[Bruyns]] 2006 (s) syn. Monadenium simplex
*''[[Euphorbia pseudostellata]]'' [[Bruyns]] 2006 (s) syn. Monadenium stellatum
*''[[Euphorbia pseudotrinervis]]'' [[Bruyns]] 2006 (s) syn. Monadenium trinerve
*''[[Euphorbia pseudotuberosa]]'' [[Ferdinand Albin Pax|Pax]] 1908 (s)
*''[[Euphorbia pseudovolkensii]]'' [[Bruyns]] 2006 (s) syn. Synadenium volkensii
*''[[Euphorbia pteroclada]]'' [[L.C.Leach]] 1976 (s)
*''[[Euphorbia pterococca]]'' [[Brot.]] 1805
*''[[Euphorbia pteroneura]]'' [[A.Berger]] 1906 (s)
*''[[Euphorbia pubentissima]]'' [[Michx.]] 1803 - False flowering spurge
*''[[Euphorbia puberula]]'' [[Fernald]] 1901
*''[[Euphorbia pubicaulis]]'' [[S.Moore]] 1926
*''[[Euphorbia pubiglans]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia pudibunda]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium pudibundum
*''[[Euphorbia pudibunda var. lanata]]'' ([[S.Carter]]) [[Bruyns]] 2006 (s) syn. Monadenium pudibundum var. lanatum
*''[[Euphorbia pudibunda var. rotundifolia]]'' ([[Malaysse]] & [[Lecron]]) [[Bruyns]] 2006 (s) syn. Monadenium pudibundum var. rotundifolium
*''[[Euphorbia pudibunda var. pudibunda]]'' (s) syn. Monadenium pudibundum var. pudibundum
*''[[Euphorbia pueblensis]]'' [[Brandegee]] 1917
*''[[Euphorbia pugniformis]]'' [[Boiss.]] 1862 (s)
*''[[Euphorbia pulcherrima]]'' [[Carl Ludwig Willdenow|Willd.]] ex [[Klotzsch]] 1834 (s) - Poinsettia
*''[[Euphorbia pulvinata]]'' [[Marloth]] 1909 (s) - Pincushion euphorbia
*''[[Euphorbia pumicicola]]'' [[Huft]] 1985
*''[[Euphorbia punctata]]'' [[Delile]] 1813
*''[[Euphorbia punctulata]]'' [[Anderson]] 1854
*''[[Euphorbia punicea]]'' [[Sw.]] 1788 (s)
*''[[Euphorbia purpurea]]'' ([[Constantine Samuel Rafinesque-Schmaltz|Raf.]]) [[Fernald]] 1932 - Darlington's glade spurge
*''[[Euphorbia pusilla]]'' [[Lag.]] 1816
*''[[Euphorbia pycnostegia]]'' [[Boiss.]] 1860
*''[[Euphorbia pygmaea]]'' [[Carl Friedrich von Ledebour|Ledeb.]] 1850
*''[[Euphorbia pyrenaica]]'' [[Jord.]] 1846
*''[[Euphorbia pyrifolia]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788 (s)
**''[[Euphorbia pyrifolia var. coriacea]]'' [[Radcl.-Sm.]] 1984 (s)
**''[[Euphorbia pyrifolia var. pyrifolia]]'' (s)

==Q==
{{compactTOC2}}
*''[[Euphorbia qarad]]'' [[Deflers]] 1896 (s)
*''[[Euphorbia quadrangularis]]'' [[Ferdinand Albin Pax|Pax]] 1980 (s)
*''[[Euphorbia quadrata]]'' [[Nel]] 1935 (s)
*''[[Euphorbia quadrialata]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
*''[[Euphorbia quadrilatera]]'' [[L.C.Leach]] 1980 (s)
*''[[Euphorbia quadrispina]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia quaitensis]]'' [[S.Carter]] 1988 (s)
*''[[Euphorbia quartziticola]]'' [[Leandri]] 1960 (s)
*''[[Euphorbia quinquecostata]]'' [[Volkens]] 1899 (s)
*''[[Euphorbia quintasii]]'' [[Jord.]] 1892
*''[[Euphorbia quitensis]]'' [[Boiss.]] 1862

==R==
{{compactTOC2}}
*''[[Euphorbia radians]]'' [[George Bentham|Benth.]] 1839 (s) - Sun spurge
**''[[Euphorbia radians var. radians]]'' (s)
**''[[Euphorbia radians var. stormiae]]'' ([[Croizat]]) [[Rzed.]] & [[S.Calderón]] 1988 (s)
*''[[Euphorbia radiifera]]'' [[L.C.Leach]] 1975
*''[[Euphorbia radioloides]]'' [[Boiss.]] 1862
*''[[Euphorbia ramiglans]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia ramofraga]]'' [[Denis]] & [[Humbert]] ex [[Leandri]] 1952 (s)
*''[[Euphorbia ramosa]]'' [[Seaton]] 1893
*''[[Euphorbia ramulosa]]'' [[L.C.Leach]] 1966 (s)
*''[[Euphorbia randrianjohanyi]]'' [[Haev.]] & [[Labat]] 2004
*''[[Euphorbia rangovalensis]]'' [[Leandri]] 1945 (s)
*''[[Euphorbia raphanorrhiza]]'' ([[Millsp.]]) [[J.F.Macbr.]] 1951
*''[[Euphorbia raphilippii]]'' [[Oudejans]] 1989
*''[[Euphorbia rapulum]]'' [[Kar.]] & [[Kir.]] 1842 (s)
*''[[Euphorbia rauhii]]'' [[Haev.]] & [[Labat]] 2004
*''[[Euphorbia razafindratsirae]]'' [[Lavranos]] 2002 (s)
*''[[Euphorbia razafinjohanyi]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia reboudiana]]'' [[Coss.]] ex [[Batt.]] & [[Trab.]] 1890
*''[[Euphorbia reclinata]]'' [[P.R.O.Bally]] & [[S.Carter]] 1985 (s)
*''[[Euphorbia reconciliationis]]'' [[Radcl.-Sm.]] 1978
*''[[Euphorbia rectirama]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia recurva]]'' [[Hook.f.]] 1847
*''[[Euphorbia refugii]]'' [[Croizat]] 1946
*''[[Euphorbia reghinii]]'' ([[Chiov.]]) [[Vollesen]] 1985
*''[[Euphorbia regisjubae]]'' [[Webb]] & [[Berthel.]] 1846 (s)
*''[[Euphorbia reineckei]]'' [[Ferdinand Albin Pax|Pax]] ex [[Reinecke]] 1898
*''[[Euphorbia reinhardtii]]'' [[Volkens]] 1899
*''[[Euphorbia remyi]]'' [[A.Gray]] ex [[Boiss.]] 1866
*''[[Euphorbia reniformis]]'' [[Carl Ludwig Blume|Blume]] 1826
*''[[Euphorbia renneyi]]'' ([[S.Carter]]) [[Bruyns]] 2006 (s) syn. Monadenium renneyi
*''[[Euphorbia repanda]]'' ([[Haw.]]) [[Sweet]] 1818
*''[[Euphorbia repens]]'' [[K.Koch]] 1849
*''[[Euphorbia repetita]]'' [[Hochst.]] ex [[A.Rich.]] 1850
*''[[Euphorbia reptans]]'' [[P.R.O.Bally]] & [[S.Carter]] 1977 (s)
*''[[Euphorbia resinifera]]'' [[Berg]] 1863 (s) - Resin spurge
*''[[Euphorbia restiacea]]'' [[George Bentham|Benth.]] 1846 (s)
*''[[Euphorbia restituta]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia restricta]]'' [[R.A.Dyer]] 1951 (s)
*''[[Euphorbia retusa]]'' [[Peter Forsskål|Forssk.]] 1775
*''[[Euphorbia retrospina]]'' [[Rauh]] & [[Gérold]] 2000 (s)
*''[[Euphorbia reuteriana]]'' [[Boiss.]] 1853
*''[[Euphorbia revoluta]]'' [[Engelm.]] 1858
*''[[Euphorbia rhabdodes]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia rhabdotosperma]]'' [[Radcl.-Sm.]] 1975
*''[[Euphorbia rhizophora]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium rhizophorum
*''[[Euphorbia rhombifolia]]'' [[Boiss.]] 1860 (s)
*''[[Euphorbia rhytidosperma]]'' [[Boiss.]] & [[Balansa]] ex [[Boiss.]] 1859
*''[[Euphorbia rhytisperma]]'' ([[Klotzsch]] & [[Garcke]]) [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia richardsiae]]'' [[L.C.Leach]] 1977 (s)
**''[[Euphorbia richardsiae ssp. richardsiae]]'' (s)
**''[[Euphorbia richardsiae ssp. robusta]]'' [[L.C.Leach]] 1977 (s)
*''[[Euphorbia riebeckii]]'' [[Ferdinand Albin Pax|Pax]] 1899 (s)
*''[[Euphorbia rigida]]'' [[M.Bieb.]] 1808 (s)
*''[[Euphorbia rimarum]]'' [[Coss.]] & [[Balansa]] ex [[Coss.]] 1873
*''[[Euphorbia ritchiei]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium ritchiei
**''[[Euphorbia ritchiei ssp. marsabitensis]]'' ([[S.Carter]]) [[Bruyns]] 2006 (s) syn. Monadenium ritchiei ssp. marsabitense
**''[[Euphorbia ritchiei ssp. nyambensis]]'' ([[S.Carter]]) [[Bruyns]] 2006 (s) syn. Monadenium ritchiei ssp. nyambense
**''[[Euphorbia ritchiei ssp. ritchiei]]'' (s) syn. Monadenium ritchiei ssp. ritchiei
*''[[Euphorbia rivae]]'' [[Ferdinand Albin Pax|Pax]] 1897 (s)
*''[[Euphorbia robecchii]]'' [[Ferdinand Albin Pax|Pax]] 1897 (s)
*''[[Euphorbia robivelonae]]'' [[Rauh]] 1994 (s)
*''[[Euphorbia rochaensis]]'' ([[Croizat]]) [[Alonso Paz]] & [[Marchesi]] 1988
*''[[Euphorbia rockii]]'' [[C.N.Forbes]] 1909
*''[[Euphorbia rockii var. rockii]]'' [[C.N.Forbes]] 1909
**''[[Euphorbia rockii var. grandiflora]]'' ([[Hillebrand]]) [[Oudejans]] 1989
**''[[Euphorbia rockii var. rockii]]'' 
*''[[Euphorbia roemeriana]]'' [[Scheele]] 1849 - Roemer's spurge
*''[[Euphorbia rohlenae]]'' [[Velen.]] 1912
*''[[Euphorbia roschanica]]'' ([[Ikonn.]]) [[Czerep.]] 1981
*''[[Euphorbia rosea]]'' [[Retz.]] 1786
*''[[Euphorbia rosescens]]'' [[E.L.Bridges]] & [[Orzell]] 2002
*''[[Euphorbia rossiana]]'' [[Ferdinand Albin Pax|Pax]] 1910 (s)
*''[[Euphorbia rossii]]'' [[Rauh]] & [[Buchloh]] 1967 (s)
*''[[Euphorbia rosularis]]'' [[Al.Fed.]] 1941
*''[[Euphorbia rothiana]]'' [[Spreng.]] 1826
*''[[Euphorbia rothrockii]]'' ([[Millsp.]]) [[Oudejans]] 1989
*''[[Euphorbia rowlandii]]'' [[R.A.Dyer]] 1958 (s)
*''[[Euphorbia royleana]]'' [[Boiss.]] 1862 (s) - Churee
*''[[Euphorbia rubella]]'' [[Ferdinand Albin Pax|Pax]] 1903 (s)
*''[[Euphorbia rubriflora]]'' [[N.E.Br.]] 1911
*''[[Euphorbia rubromarginata]]'' [[L.E.Newton]] 1992 (s)
*''[[Euphorbia rubriseminalis]]'' [[S.Carter]] 1988 (s)
*''[[Euphorbia rubrispinosa]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia rudis]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia rudolfii]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia ruficeps]]'' [[S.Carter]] 1980 (s)
*''[[Euphorbia rugosiflora]]'' [[L.C.Leach]] 1990 (s)
*''[[Euphorbia ruizlealii]]'' [[Subils]] 1862
*''[[Euphorbia rupestris]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]] 1830
*''[[Euphorbia ruscifolia]]'' [[Boiss.]] 1915
*''[[Euphorbia ruscinonensis]]'' [[Boiss.]] 1860
*''[[Euphorbia rutilis]]'' ([[Millsp.]]) [[Standl.]] & [[Steyerm.]] 1944
*''[[Euphorbia rzedowskii]]'' [[McVaugh]] 1995

==S==
{{compactTOC2}}
*''[[Euphorbia sabulicola]]'' [[Boiss.]]
*''[[Euphorbia saccharata]]'' [[Boiss.]]
*''[[Euphorbia sachetiana]]'' ([[J.Florence]]) [[Govaerts]]
*''[[Euphorbia sahendi]]'' [[Bornm.]]
*''[[Euphorbia sajanensis]]'' ([[Boiss.]]) [[Baikov]]
*''[[Euphorbia sakarahaensis]]'' [[Rauh]] (s)
*''[[Euphorbia salicifolia]]'' [[Nicolaus Thomas Host|Host]]
*''[[Euphorbia salsicola]]'' [[S.Carter]]
*''[[Euphorbia salota]]'' [[Leandri]] (s)
*''[[Euphorbia salsuginosa]]'' ([[McVaugh]]) [[Radcl.-Sm.]] & [[Govaerts]]
*''[[Euphorbia samburuensis]]'' [[P.R.O.Bally]] & [[S.Carter]] (s)
*''[[Euphorbia sampsonii]]'' [[Hance]]
*''[[Euphorbia sanasunitensis]]'' [[Hand.-Mazz.]]
*''[[Euphorbia sancta]]'' [[Ferdinand Albin Pax|Pax]]
*''[[Euphorbia sanctaecatharinae]]'' [[A.A.Fayad]]
*''[[Euphorbia sanmartensis]]'' [[Rusby]]
*''[[Euphorbia santapaui]]'' [[A.N.Henry]] (s)
*''[[Euphorbia sapiifolia]]'' [[Baillon]]
*''[[Euphorbia sapinii]]'' [[De Wild.]] (s)
*''[[Euphorbia sarawschanica]]'' [[Regel]]
*''[[Euphorbia sarcodes]]'' [[Boiss.]] (s)
*''[[Euphorbia sarcostemmatoides]]'' [[Dinter]]
*''[[Euphorbia sarcostemmoides]]'' [[J.H.Willis]] (s)
*''[[Euphorbia sareptana]]'' [[A.Becker]]
*''[[Euphorbia sarmentosa]]'' [[Welw.]] ex [[Ferdinand Albin Pax|Pax]]
*''[[Euphorbia saurica]]'' [[Baikov]]
*''[[Euphorbia saxatilis]]'' [[Nikolaus Joseph von Jacquin|Jacq.]]
*''[[Euphorbia saxicola]]'' [[Radcl.-Sm.]]
*''[[Euphorbia saxorum]]'' [[P.R.O.Bally]] & [[S.Carter]] (s)
*''[[Euphorbia scabrifolia]]'' [[S.Kurz]]
*''[[Euphorbia scandens]]'' [[Carl Sigismund Kunth|Kunth]]
*''[[Euphorbia scarlatina]]'' [[S.Carter]] (s)
*''[[Euphorbia scatorrhiza]]'' [[S.Carter]] (s)
*''[[Euphorbia schaijesii]]'' ([[Malaisse]]) [[Bruyns]] (s) (= ''Monadenium schaijesii'')
*''[[Euphorbia scheffleri]]'' [[Ferdinand Albin Pax|Pax]]
*''[[Euphorbia schillingii]]'' [[Radcl.-Sm.]]
*''[[Euphorbia schimperi]]'' [[C.Presl]] (s)
*''[[Euphorbia schimperiana]]'' [[Scheele]]
**''Euphorbia schimperiana'' var. ''pubescens'' ([[N.E.Br.]]) [[S.Carter]]
**''Euphorbia schimperiana'' var. ''schimperiana''
**''Euphorbia schimperiana'' var. ''velutina'' [[N.E.Br.]]
*''[[Euphorbia schinzii]]'' [[Ferdinand Albin Pax|Pax]] (s)
*''[[Euphorbia schizacantha]]'' [[Ferdinand Albin Pax|Pax]] (s)
*''[[Euphorbia schizolepis]]'' [[F.Muell.]] ex [[Boiss.]]
*''[[Euphorbia schizoloba]]'' [[Engelm.]]
*''[[Euphorbia schlechtendalii]]'' [[Boiss.]] (s)
**''Euphorbia schlechtendalii'' var. ''pacifica'' [[McVaugh]]
**''Euphorbia schlechtendalii'' var. ''schlechtendalii''
**''Euphorbia schlechtendalii'' var. ''websteri'' [[McVaugh]]
*''[[Euphorbia schlechteri]]'' [[Ferdinand Albin Pax|Pax]]
*''[[Euphorbia schmitzii]]'' [[L.C.Leach]] (s)
*''[[Euphorbia schoenlandii]]'' [[Ferdinand Albin Pax|Pax]] (s)
*''[[Euphorbia schottiana]]'' [[Boiss.]]
*''[[Euphorbia schubei]]'' [[Pax]] (s) (= ''Monadenium schubei'')
*''[[Euphorbia schugnanica]]'' [[B.Fedtsch.]] ex [[O.Fedtsch.]] & [[B.Fedtsch.]] (s)
*''[[Euphorbia schultzii]]'' [[George Bentham|Benth.]]
*''[[Euphorbia schumannii]]'' [[Radcl.-Sm.]]
*''[[Euphorbia schweinfurthii]]'' [[Balf.f.]] (s)
*''[[Euphorbia sciadophila]]'' [[Boiss.]]
*''[[Euphorbia scitula]]'' [[L.C.Leach]] (s)
*''[[Euphorbia sclerocyathium]]'' [[Korovin]] & [[Popov]]
*''[[Euphorbia sclerophylla]]'' [[Boiss.]]
*''[[Euphorbia scopulorum]]'' [[Brandegee]]
*''[[Euphorbia scordiifolia]]'' [[Nikolaus Joseph von Jacquin|Jacq.]]
*''[[Euphorbia scotanum]]'' [[Schltdl.]] (s)
*''[[Euphorbia scripta]]'' [[Sommier]] & [[Levier]]
*''[[Euphorbia scyphadena]]'' [[S.Carter]] (s)
*''[[Euphorbia seclusa]]'' [[N.E.Br.]]
*''[[Euphorbia sebsebei]]'' [[M.G.Gilbert]] (s)
*''[[Euphorbia segetalis]]'' [[Carolus Linnaeus|L.]] – [[Grainfield Spurge]]
*''[[Euphorbia segoviensis]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]]
*''[[Euphorbia seguieriana]]'' [[Neck.]]
**''Euphorbia seguieriana'' ssp. ''loiseleurii'' ([[Rouy]]) [[Greuter]] & [[Burdet]]
**''Euphorbia seguieriana'' ssp. ''niciciana'' ([[Borbás]] ex [[J. Novák]]) [[Rech.f.]]
**''Euphorbia seguieriana'' ssp. ''seguieriana''
***''Euphorbia seguieriana'' ssp. ''seguieriana'' var. ''arenivaga'' ([[Martin-Donos]]) [[Oudejans]]
***''Euphorbia seguieriana'' ssp. ''seguieriana'' var. ''dentata'' ([[Chabert]]) [[Oudejans]]
***''Euphorbia seguieriana'' ssp. ''seguieriana'' var. ''intermedia'' ([[S?vul.]]) [[Oudejans]]
***''Euphorbia seguieriana'' ssp. ''seguieriana'' var. ''lanceolata'' ([[Cariot]]) [[Oudejans]]
***''Euphorbia seguieriana'' ssp. ''seguieriana'' var. ''latifolia'' ([[J.J.Schmitz]] & [[Regel]]) [[Oudejans]]
***''Euphorbia seguieriana'' ssp. ''seguieriana var. seguieriana''
***''Euphorbia seguieriana'' ssp. ''seguieriana var. sturii'' ([[Holuby]]) [[Oudejans]]
*''[[Euphorbia seibanica]]'' [[Lavranos]] & [[A.N.Al-Gifri]] (s)
*''[[Euphorbia sekukuniensis]]'' [[R.A.Dyer]] (s)
*''[[Euphorbia seleri]]'' [[Donn.Sm.]]
*''[[Euphorbia selloi]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]]
*''[[Euphorbia selousiana]]'' [[S.Carter]] (s)
*''[[Euphorbia semperflorens]]'' [[L.C.Leach]] (s)
*''[[Euphorbia sendaica]]'' [[Tomitaro Makino|Makino]]
*''[[Euphorbia senguptae]]'' [[Balakr.]] & [[Subram.]]
*''[[Euphorbia senilis]]'' [[Standl.]] & [[Steyerm.]]
*''[[Euphorbia sennenii]]'' [[Pau]]
*''[[Euphorbia sennii]]'' [[Chiov.]] (s)
*''[[Euphorbia septemsulcata]]'' [[Vierh.]] (s)
*''[[Euphorbia septentrionalis]]'' [[P.R.O.Bally]] & [[S.Carter]] (s)
**''Euphorbia septentrionalis'' ssp. ''gamugofana'' [[M.G.Gilbert]]
**''Euphorbia septentrionalis'' ssp. ''septentrionalis''
*''[[Euphorbia sepulta]]'' [[P.R.O.Bally]] & [[S.Carter]] (s)
*''[[Euphorbia seracomans]]'' [[Bubani]]
*''[[Euphorbia serendipita]]'' [[L.E.Newton]] (s)
*''[[Euphorbia seretii]]'' [[De Wild.]] (s)
**''Euphorbia seretii'' ssp. ''seretii''
**''Euphorbia seretii'' ssp. ''variantissima'' [[L.C.Leach]]
*''[[Euphorbia seriocarpa]]'' [[Hand.-Mazz.]]
*''[[Euphorbia serpens]]'' [[Carl Sigismund Kunth|Kunth]]
*''[[Euphorbia serpentini]]'' [[Novak]]
*''[[Euphorbia serpyllifolia]]'' [[Pers.]]
**''Euphorbia serpyllifolia'' ssp. ''hirtula'' ([[S.Watson]]) [[Oudejans]]
**''Euphorbia serpyllifolia'' ssp. ''serpyllifolia''
*''[[Euphorbia serrata]]'' [[Carolus Linnaeus|L.]] – [[Serrated Spurge]], Saw-toothed Spurge
*''[[Euphorbia serratifolia]]'' [[S.Carter]]
*''[[Euphorbia serrula]]'' [[Engelm.]]
*''[[Euphorbia sessei]]'' [[Oudejans]]
*''[[Euphorbia sessiliflora]]'' [[Roxb.]] (s)
*''[[Euphorbia sessilifolia]]'' [[Klotzsch]] ex [[Boiss.]]
*''[[Euphorbia setiloba]]'' [[Engelm.]] ex [[Torr.]]
*''[[Euphorbia setispina]]'' [[S.Carter]] (s)
*''[[Euphorbia sewerzowii]]'' ([[Herd.]] ex [[Prokh.]]) [[N.V.Pavlov]]
*''[[Euphorbia shaferi]]'' ([[Millsp.]]) [[L.G.Gonzáles]] & [[Bisse]]
*''[[Euphorbia sharkoensis]]'' [[Baillon]]
*''[[Euphorbia sharmae]]'' [[U.C.Battach.]]
*''[[Euphorbia shebeliensis]]'' ([[M.G. Gilbert]]) [[Bruyns]] (s) (= ''Monadenium shebeliense'')
*''[[Euphorbia shouanensis]]'' [[H.Keng]]
*''[[Euphorbia sieboldiana]]'' [[Morr.]] & [[Decne.]]
**''Euphorbia sieboldiana'' var. ''grandifolia'' ([[Franch.]] & [[Sav.]] ex [[Hurus.]]) [[Oudejans]]
**''Euphorbia sieboldiana'' var. ''idzuensis'' ([[Hurus.]]) [[Oudejans]]
**''Euphorbia sieboldiana'' var. ''ohsumiensis'' ([[Hurus.]]) [[Hatus.]]
**''Euphorbia sieboldiana'' var. ''peninsularis'' ([[Hurus.]]) [[M.Kitagawa]]
**''Euphorbia sieboldiana'' var. ''sieboldiana''
**''Euphorbia sieboldiana'' var. ''sylvatica'' ([[Hurus.]]) [[Oudejans]]
*''[[Euphorbia sikkimensis]]'' [[Boiss.]]
*''[[Euphorbia silenifolia]]'' ([[Haw.]]) [[Sweet]] (s)
*''[[Euphorbia similiramea]]'' [[S.Carter]] (s)
*''[[Euphorbia sinclairiana]]'' [[George Bentham|Benth.]] (s)
*''[[Euphorbia sintenisii]]'' [[Boiss.]] ex [[J.Freyn]]
*''[[Euphorbia sipolisii]]'' [[N.E.Br.]] (s)
*''[[Euphorbia smallii]]'' [[Oudejans]]
*''[[Euphorbia smirnovii]]'' [[Geltman]]
*''[[Euphorbia smithii]]'' [[S.Carter]] (s)
*''[[Euphorbia socotrana]]'' [[Balf.f.]] (s)
*''[[Euphorbia sogdiana]]'' [[Popov]]
*''[[Euphorbia sojakii]]'' ([[Chrtek]] & [[Křísa]]) [[Dubovik]] ex [[Dubovik]] et al.
*''[[Euphorbia somalensis]]'' [[Ferdinand Albin Pax|Pax]] (s)
*''[[Euphorbia songweana]]'' [[S.Carter]] (s)
*''[[Euphorbia sonorae]]'' [[Rose]]
*''[[Euphorbia soobyi]]'' [[McVaugh]]
*''[[Euphorbia soongarica]]'' [[Boiss.]]
*''[[Euphorbia sororia]]'' [[Schrenk]]
*''[[Euphorbia sparrmanii]]'' [[Boiss.]] (= ''Euphorbia ramosissima'' Hook. & Arn. ''non'' Loiseleur (nom. illeg.), ''Chamaesyce sparrmanii'' (Boissier) Hurusawa)
*''[[Euphorbia sparsiflora]]'' [[A.Heller]]
*''[[Euphorbia sparsiglandulosa]]'' [[J.Ponert]]
*''[[Euphorbia spartaria]]'' [[N.E.Br.]] (s)
*''[[Euphorbia spartiformis]]'' [[Mobayen]]
*''[[Euphorbia spathulata]]'' [[Jean-Baptiste Lamarck|Lam.]] – [[Roughpod Spurge]], Warty Spurge
**''Euphorbia spathulata'' var. ''mexicana'' ([[Engelm.]]) [[Oudejans]]
**''Euphorbia spathulata'' var. ''spathulata''
*''[[Euphorbia spathulifolia]]'' ([[Haw.]]) [[Steud.]]
*''[[Euphorbia speciosa]]'' [[L.C.Leach]] (s)
*''[[Euphorbia specksii]]'' [[Rauh]] (s)
*''[[Euphorbia spectabilis]]'' ([[S.Carter]]) [[Bruyns]] (s) (= ''Monadenium spectabile'')
*''[[Euphorbia sphaerorrhiza]]'' [[George Bentham|Benth.]] (s)
*''[[Euphorbia spicata]]'' [[E.Mey.]] ex [[Boiss.]] (s)
*''[[Euphorbia spinea]]'' [[N.E.Br.]] (s)
*''[[Euphorbia spinidens]]'' ([[Bornm.]] ex [[Prokh.]]) [[Prokh.]]
*''[[Euphorbia spinosa]]'' [[Carolus Linnaeus|L.]] (s)
**''Euphorbia spinosa'' ssp. ''ligustica'' ([[Fiori]]) [[Pignatti]]
**''Euphorbia spinosa'' ssp. ''spinosa''
*''[[Euphorbia spinulosa]]'' ([[S.Carter]]) [[Bruyns]] (s) (= ''Monadenium spinulosum'')
*''[[Euphorbia spiralis]]'' [[Balf.f.]] (s)
*''[[Euphorbia spissiflora]]'' [[S.Carter]]
*''[[Euphorbia spruceana]]'' [[Boiss.]]
*''[[Euphorbia squamigera]]'' [[Loisel.]] (s)
*''[[Euphorbia squamosa]]'' [[Carl Ludwig Willdenow|Willd.]]
**''Euphorbia squamosa'' var. ''serrata'' ([[Boiss.]]) [[Oudejans]]
**''Euphorbia squamosa'' var. ''squamosa''
**''Euphorbia squamosa'' var. ''talyschensis'' ([[Boiss.]] & [[Buhse]]) [[Oudejans]]
**''Euphorbia squamosa'' var. ''wilhelmsiana'' ([[K.Koch]]) [[Oudejans]]
*''[[Euphorbia squarrosa]]'' [[Haw.]]
*''[[Euphorbia stapelioides]]'' [[Boiss.]] (s)
*''[[Euphorbia stapfii]]'' [[A.Berger]] (s)
*''[[Euphorbia stellata]]'' [[Carl Ludwig Willdenow|Willd.]] (s)
*''[[Euphorbia stellispina]]'' ([[Haw.]]) (s)
**''Euphorbia stellispina'' var. ''astrispina'' ([[N.E.Br.]]) [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]]
**''Euphorbia stellispina'' var. ''stellispina'' 
*''[[Euphorbia stenocaulis]]'' [[Bruyns]] (s)
*''[[Euphorbia stenoclada]]'' [[Baillon]] (s)
**''Euphorbia stenoclada'' ssp. ''ambatofinandranae'' ([[Leandri]]) [[Cremers]]
**''Euphorbia stenoclada'' ssp. ''stenoclada''
*''[[Euphorbia stenophylla]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]]
*''[[Euphorbia stevenii]]'' [[F.M.Bailey]] (s)
*''[[Euphorbia steyermarkii]]'' [[Standl.]] ex [[Standl.]] & [[Steyerm.]]
*''[[Euphorbia strictospora]]'' [[Engelm.]]
*''[[Euphorbia stoddartii]]'' [[Frosberg]]
*''[[Euphorbia stolonifera]]'' [[Marloth]] ex [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] (s)
*''[[Euphorbia stracheyi]]'' [[Boiss.]]
*''[[Euphorbia strangulata]]'' [[N.E.Br.]] (s)
**''Euphorbia strangulata'' ssp. ''deminuens'' [[L.C.Leach]]
**''Euphorbia strangulata'' ssp. ''strangulata''
*''[[Euphorbia striata]]'' [[Thunb.]] (s)
*''[[Euphorbia stricta]]'' [[Carolus Linnaeus|L.]]
*''[[Euphorbia strictior]]'' [[Holz.]] – [[Panhandle Spurge]]
*''[[Euphorbia strigosa]]'' [[Hook.]] & [[Arn.]] (s)
*''[[Euphorbia stygiana]]'' [[H.C.Watson]] (s)
**''Euphorbia stygiana'' ssp. ''santamariae'' [[H.Schäf.]]
**''Euphorbia stygiana'' ssp. ''stygiana''
*''[[Euphorbia subcordata]]'' [[C.A.Mey.]] ex [[Carl Friedrich von Ledebour|Ledeb.]]
*''[[Euphorbia subhastifolia]]'' [[Klokov]] ex [[Dubovik]] & [[Klokov]]
*''[[Euphorbia submammillaris]]'' ([[A.Berger]]) [[A.Berger]] (s)
*''[[Euphorbia subpeltata]]'' [[S.Watson]]
*''[[Euphorbia subpeltatophylla]]'' [[Rauh]] (s)
*''[[Euphorbia subreniformis]]'' [[S.Watson]]
*''[[Euphorbia subsalsa]]'' [[Hiern]] (s)
**''Euphorbia subsalsa'' ssp. ''fluvialis'' [[L.C.Leach]]
**''Euphorbia subsalsa'' ssp. ''subsalsa''
*''[[Euphorbia subscandens]]'' [[P.R.O.Bally]] & [[S.Carter]] (s)
*''[[Euphorbia subterminalis]]'' [[N.E.Br.]]
*''[[Euphorbia subtrifoliata]]'' [[Rusby]]
*''[[Euphorbia subulatifolia]]'' [[Hurus.]]
*''[[Euphorbia succedanea]]'' [[L.C.Wheeler]]
*''[[Euphorbia sudanica]]'' [[A.Chev.]] (s)
*''[[Euphorbia suffulta]]'' [[P.Bruyns]] (s)
*''[[Euphorbia sulcata]]'' [[De Lens]] ex [[Loisel.]]
**''Euphorbia sulcata'' ssp. ''maroccana'' [[Molero]], [[Rovira]] & [[J.Vicens.]]
**''Euphorbia sulcata'' ssp. ''sulcata''
*''[[Euphorbia sultan-hassei]]'' [[Strid]], [[B.Bentzer]], [[R.von Bothmer]], [[L.Engstrand]] & [[M.Gustafsson]] (s)
*''[[Euphorbia sumati]]'' [[S.Carter]] (s)
*''[[Euphorbia sumbawensis]]'' [[Boiss.]]
*''[[Euphorbia superans]]'' [[Nel]] (s)
*''[[Euphorbia suppressa]]'' [[Marx]] (s)
*''[[Euphorbia surinamensis]]'' [[Lanj.]]
*''[[Euphorbia susanholmesiae]]'' [[Binojk.]] & [[Gopalan]] (s)
*''[[Euphorbia susannae]]'' [[Marloth]] (s) – [[Suzanne's Spurge]]
*''[[Euphorbia suzannaemarnierae]]'' [[Rauh]] & [[Pétignat]] (s)
*''[[Euphorbia synadenium]]'' [[Ridl.]] (s)
*''[[Euphorbia syncalycina]]'' [[Bruyns]] (s) (= ''Synadenium calycinum'')
*''[[Euphorbia syncameronii]]'' [[Bruyns]] (s) (= ''Synadenium cameronii'')
*''[[Euphorbia systyla]]'' [[Edgew.]]
*''[[Euphorbia systyloides]]'' [[Ferdinand Albin Pax|Pax]]
**''Euphorbia systyloides'' ssp. ''porcaticapsa'' [[S.Carter]]
**''Euphorbia systyloides'' ssp. ''systyloides''
*''[[Euphorbia szechuanica]]'' [[Ferdinand Albin Pax|Pax]] & [[K.Hoffmann]]
*''[[Euphorbia szovitsii]]'' [[Friedrich Ernst Ludwig von Fischer|Fisch.]] & [[C.A.Mey.]]

==T==
{{compactTOC2}}
*''[[Euphorbia taboraensis]]'' [[A.Hässl.]] 1931 (s)
*''[[Euphorbia tacnensis]]'' [[Rodolfo Amando Philippi|Phil.]] 1891
*''[[Euphorbia taihsiensis]]'' ([[Chaw]] & [[Koutnik]]) [[Oudejans]] 1990
*''[[Euphorbia taitensis]]'' [[Boiss.]] 1860
*''[[Euphorbia taiwaniana]]'' [[S.S.Ying]] 1987
*''[[Euphorbia talaina]]'' [[Radcl.-Sm.]] 1986
*''[[Euphorbia talastavica]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia taluticola]]'' [[Wiggins]] 1965
*''[[Euphorbia tamanduana]]'' [[Boiss.]] 1860
*''[[Euphorbia tamaulipasana]]'' ([[Millsp.]]) [[Oudejans]] 1989
*''[[Euphorbia tanaensis]]'' (s)
*''[[Euphorbia tanaitica]]'' [[Paczoski]] 1891
*''[[Euphorbia tannensis]]'' [[Spreng.]] 1807 (s)
**''Euphorbia tannensis'' ssp. ''eremophila'' ([[Allan Cunningham (botanist)|A.Cunn.]]) [[D.C.Hassall]] 1977
**''Euphorbia tannensis'' ssp. ''tannensis''
*''[[Euphorbia tanquahuete]]'' [[Sessé]] & [[Moc.]] 1894 (s)
*''[[Euphorbia tarapacana]]'' [[Rodolfo Amando Philippi|Phil.]] 1891
*''[[Euphorbia tardieuana]]'' (s)
*''[[Euphorbia tarokoensis]]'' [[Hayata]] 1918
*''[[Euphorbia taruensis]]'' [[S.Carter]] 1987 (s)
*''[[Euphorbia tashiroi]]'' [[Hayata]] 1920
*''[[Euphorbia tauricola]]'' [[Prokh.]] 1949
*''[[Euphorbia taurinensis]]'' [[All.]] 1785
**''Euphorbia taurinensis'' var. ''brachyceras'' ([[P.Candargy]]) [[Oudejans]] 1992
**''Euphorbia taurinensis'' var. ''isophylla'' ([[K.Malý]]) [[Oudejans]] 1992
**''Euphorbia taurinensis var. taurinensis]]''
*''[[Euphorbia taxifolia]]'' [[Burm.f.]] 1768
*''[[Euphorbia tchenngoi]]'' ([[Soják]]) [[Radcl.-Sm.]] 1981
*''[[Euphorbia teheranica]]'' [[Boiss.]] 1860
*''[[Euphorbia tehuacana]]'' ([[Millsp.]]) & [[V.W.Steinm.]] 2003 (= ''Pedilanthus tehuacanus'') (s)
*''[[Euphorbia teixeirae]]'' [[L.C.Leach]] 1974 (s)
*''[[Euphorbia teke]]'' [[Ferdinand Albin Pax|Pax]] 1938 (s)
*''[[Euphorbia telephioides]]'' [[Chapm.]] 1860 – [[Telephus Spurge]]
*''[[Euphorbia tenax]]'' [[W.J.Burchell]] 1822 (s)
*''[[Euphorbia tenera]]'' [[S.Watson]] 1883
*''[[Euphorbia tenuirama]]'' [[Schweinf.]] ex [[A.Berger]] 1906 (s)
*''[[Euphorbia tenuispinosa]]'' [[Gilli]] 1974 (s)
**''Euphorbia tenuispinosa'' var. ''robusta'' [[P.R.O.Bally]] & [[S.Carter]] 1987
**''Euphorbia tenuispinosa'' var. ''tenuispinosa''
*''[[Euphorbia terracina]]'' [[Carolus Linnaeus|L.]] 1762 – [[Geraldton Carnation Weed]]
**''Euphorbia terracina'' var. ''alexandrina'' ([[Delile]]) [[Z.El-Karemy]] 1994
**''Euphorbia terracina'' var. ''terracina''
*''[[Euphorbia tescorum]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia teskensuensis]]'' [[A.O.Orazova]] 1983
*''[[Euphorbia tessmannii]]'' [[Mansf.]] 1929
*''[[Euphorbia tetracantha]]'' [[Rendle]] 1896 (s)
*''[[Euphorbia tetracanthoides]]'' [[Ferdinand Albin Pax|Pax]] 1901 (s)
*''[[Euphorbia tetragona]]'' [[Haw.]] 1827 (s)
*''[[Euphorbia tetrapora]]'' [[Engelm.]] 1858 – [[Weak Spurge]]
*''[[Euphorbia tetraptera]]''
*''[[Euphorbia tettensis]]'' [[Klotzsch]] 1861
*''[[Euphorbia tetuanensis]]'' [[Pau]] 1929
*''[[Euphorbia texana]]'' [[Boiss.]] 1860 – [[Texas Spurge]]
*''[[Euphorbia therica]]'' [[L.C.Wheeler]] 1941
*''[[Euphorbia thinophila]]'' [[Rodolfo Amando Philippi|Phil.]] 1873 (s)
*''[[Euphorbia tholicola]]'' [[L.C.Leach]] 1992 (s)
*''[[Euphorbia thompsonii]]'' [[Holmboe]] 1914
*''[[Euphorbia thomsoniana]]'' [[Boiss.]] 1862
*''[[Euphorbia thouarsiana]]'' (s)
*''[[Euphorbia thulinii]]'' (s)
*''[[Euphorbia thymifolia]]'' [[Carolus Linnaeus|L.]] 1753 (= ''Chamaesyce thymifolia'')
*''[[Euphorbia thyrsoidea]]'' [[Boiss.]] 1862
*''[[Euphorbia tianshanica]]'' [[Prokh.]] & [[Popov]] 1938
*''[[Euphorbia tibetica]]'' [[Boiss.]] 1862
*''[[Euphorbia tinianensis]]'' [[Hosok.]] 1935
*''Euphorbia tirucalli'' – [[Indian Tree Spurge]], Milk Bush, Pencil Tree (s)
*''[[Euphorbia tisserantii]]'' [[A.Chev.]] [[R.Sillans]] ex [[A.Chev.]] 1953
*''[[Euphorbia tithymaloides]]'' [[Carolus Linnaeus|L.]] 1753 (= ''Pedilanthus tithymaloides'') – "[[Devil's Backbone]]", "Redbird cactus", ''cimora misha'' ([[Peru]]) (s)
**''Euphorbia tithymaloides'' ssp. ''angustifolia'' ([[Poit.]]) [[V.W.Steinm.]] 2003 (= ''Pedilanthus tithymaloides'' ssp. ''angustifolius'')
**''Euphorbia tithymaloides'' ssp. ''bahamensis'' ([[Millsp.]]) [[V.W.Steinm.]] 2003 (= ''Pedilanthus tithymaloides'' ssp. ''bahamensis'')
**''Euphorbia tithymaloides'' ssp. ''jamaicensis'' ([[Millsp.]] & [[Britton]]) [[V.W.Steinm.]] 2003 (= ''Pedilanthus tithymaloides'' ssp. ''jamaicensis'')
**''Euphorbia tithymaloides'' ssp. ''padifolia'' ([[Carolus Linnaeus|L.]]) [[V.W.Steinm.]] 2003 (= ''Pedilanthus tithymaloides'' ssp. ''padifolius'')
**''Euphorbia tithymaloides'' ssp. ''parasitica'' ([[Klotzsch.]] & [[Garcke]]) [[V.W.Steinm.]] 2003 (= ''Pedilanthus tithymaloides'' ssp. ''parasiticus'')
**''Euphorbia tithymaloides'' ssp. ''retusa'' ([[George Bentham|Benth.]]) [[V.W.Steinm.]] 2003 (= ''Pedilanthus tithymaloides'' ssp. ''retusus'')
**''Euphorbia tithymaloides'' ssp. ''smallii'' ([[Millsp.]]) [[V.W.Steinm.]] 2003 (= ''Pedilanthus tithymaloides'' ssp. ''smallii'')
**''Euphorbia tithymaloides'' ssp. ''tithymaloides'' (= ''Pedilanthus tithymaloides'' ssp. ''tithymaloides'')
*''[[Euphorbia tlapanensis]]'' [[Hargreaves]] 1995
*''[[Euphorbia togakusensis]]'' [[Hayata]] 1904
*''[[Euphorbia tomentella]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia tomentulosa]]'' [[S.Watson]] 1887 (s)
*''[[Euphorbia torralbasii]]'' [[Urb.]] 1899
*''[[Euphorbia torrei]]'' ([[L.C.Leach]]) [[Bruyns]] 2006 (= ''Monadenium torrei'') (s)
*''[[Euphorbia torta]]'' [[Ferdinand Albin Pax|Pax]] & [[K.Hoffmann]] 1910 (s)
*''[[Euphorbia tortilis]]'' [[Rottler]] ex [[W.Ainslie]] 1826 (s)
*''[[Euphorbia tortirama]]'' [[R.A.Dyer]] 1937 (s)
*''[[Euphorbia tortistyla]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia tozzii]]'' [[Chiov.]] 1932
*''[[Euphorbia trachysperma]]'' [[Engelm.]] 1858
*''[[Euphorbia trancapatae]]'' ([[Croizat]]) [[Macbride]] 1951
*''[[Euphorbia transoxana]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia transtagana]]'' [[Boiss.]] 1859
*''[[Euphorbia transvaalensis]]'' [[Schltr.]] 1896 (s)
*''[[Euphorbia tranzschelii]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia triangolensis]]'' [[Bruyns]] 2006 (= ''Synadenium angolense'') (s)
*''[[Euphorbia triaculeata]]'' [[Peter Forsskål|Forssk.]] 1775 (s)
*''[[Euphorbia trialata]]'' ([[Huft]]) [[V.W.Steinm.]] 2002
*''[[Euphorbia triangularis]]'' [[Desf.]] ex [[A.Berger]] 1906 (s)
*''[[Euphorbia trichadenia]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
**''Euphorbia trichadenia'' var. ''gibbsiae'' [[N.E.Br.]] 1911
**''Euphorbia trichadenia'' var. ''trichadenia''
*''[[Euphorbia trichiocyma]]'' [[S.Carter]] 1985
*''[[Euphorbia trichocardia]]'' [[L.B.Sm.]] 1936
*''[[Euphorbia trichophylla]]''
*''[[Euphorbia trichotoma]]'' [[Carl Sigismund Kunth|Kunth]] 1817 – [[Sanddune Spurge]]
*''[[Euphorbia tricolor]]'' [[Greenm.]] 1898
*''[[Euphorbia tridentata]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788 (s)
*''[[Euphorbia triflora]]'' [[Schott]], [[Nyman]] & [[Kotschy]] 1854
*''[[Euphorbia trigona]]'' [[Mill.]] 1768 – [[African Milk Tree]] (s)
*''[[Euphorbia triloba]]'' [[Sessé]] & [[Moc.]] 1888
*''[[Euphorbia trinervia]]'' [[Schumach.]] 1827
*''[[Euphorbia triodonta]]'' ([[Prokh.]]) [[Prokh.]] 1949
*''[[Euphorbia tripartita]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia triphylla]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Oudejans]] 1989
*''[[Euphorbia troyana]]'' [[Urb.]] 1908
*''[[Euphorbia tshuiensis]]'' ([[Prokh.]]) [[Sergievsk.]] ex [[Krylov]] 1934
*''[[Euphorbia tsimbazazae]]'' [[Leandri]] 1946
*''[[Euphorbia tuberculata]]'' [[Nikolaus Joseph von Jacquin|Jacq.]] 1797 (s)
**''Euphorbia tuberculata'' var. ''macowanii'' [[A.C.White]], [[R.A.Dyer]] & [[B.Sloane]] 1941
**''Euphorbia tuberculata'' var. ''tuberculata''
*''[[Euphorbia tuberculatoides]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia tuberifera]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia tuberosa]]'' [[Carolus Linnaeus|L.]] 1753 (s)
*''[[Euphorbia tubiglans]]'' [[Marloth]] ex. [[R.A.Dyer]] 1934 (s)
*''[[Euphorbia tuckeyana]]'' [[Steud.]] ex [[P.B.Webb]] 1849 (s)
*''[[Euphorbia tuerckheimii]]'' [[Urb.]] 1912
*''[[Euphorbia tugelensis]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia tulearensis]]'' (s)
*''[[Euphorbia tumbaensis]]'' [[De Wild.]] 1908
*''[[Euphorbia tumistyla]]'' ([[Burch]]) [[Radcl.-Sm.]] 1971
*''[[Euphorbia tunetana]]'' ([[Murbeck]]) [[Vierh.]] ex [[F.Buxbaum]] 1927
*''[[Euphorbia turbiniformis]]'' [[Chiov.]] 1929 (s)
*''[[Euphorbia turczaninowii]]'' [[Kar.]] & [[Kir.]] 1842
*''[[Euphorbia turkanensis]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia turkestanica]]'' [[Regel]] 1882
*''[[Euphorbia turpinii]]'' [[Boiss.]] 1860
*''[[Euphorbia tyraica]]'' [[Klokov]] & [[Artemcz.]] ex [[Klokov]] 1955

==U==
{{compactTOC2}}
*''[[Euphorbia ugandensis]]'' [[Ferdinand Albin Pax|Pax]] & [[K.Hoffmann]] ex [[Ferdinand Albin Pax|Pax]] 1910
*''[[Euphorbia uhligiana]]'' [[Ferdinand Albin Pax|Pax]] 1909 (s)
*''[[Euphorbia uliginosa]]'' [[Welw.]] ex [[Boiss.]] 1862;
*''[[Euphorbia umbellulata]]'' [[Engelm.]] ex [[Boiss.]] 1862
*''[[Euphorbia umbonata]]'' [[S.Carter]] 1992 (s)
*''[[Euphorbia umbraculiformis]]'' [[Rauh]] 1994 (s)
*''[[Euphorbia umbrosa]]'' [[Bert.]] ex [[Spreng.]] 1826
*''[[Euphorbia umfoloziensis]]'' [[R.G.Peckover]] 1991 (s)
*''[[Euphorbia undulata]]'' [[M.Bieb.]] 1812
*''[[Euphorbia undulatifolia]]'' [[Janse]] 1953 (s)
*''[[Euphorbia unicornis]]'' [[R.A.Dyer]] 1951 (s)
*''[[Euphorbia uniglandulosa]]'' [[S.Watson]] 1887
*''[[Euphorbia uniglans]]'' [[M.G.Gilbert]] 1990 (s)
*''[[Euphorbia unispina]]'' [[N.E.Br.]] 1911 (s)
*''[[Euphorbia uralensis]]'' [[Friedrich Ernst Ludwig von Fischer|Fisch.]] ex [[Johann Heinrich Friedrich Link|Link]] 1822
*''[[Euphorbia urbanii]]'' ([[Millsp.]]) [[Oudejans]] 1989
*''[[Euphorbia urceolophora]]'' [[Parodi]] 1881
*''[[Euphorbia usambarica]]'' [[Ferdinand Albin Pax|Pax]] 1894 (s)
**''[[Euphorbia usambarica ssp. elliptica]]'' [[Ferdinand Albin Pax|Pax]] 1895 (s)
**''[[Euphorbia usambarica ssp. usambarica]]'' (s)
*''[[Euphorbia uzmuk]]'' [[S.Carter]] & [[J.R.I.Wood]] 1982 (s)

==V==
{{compactTOC2}}
*''[[Euphorbia vaalputsiana]]'' [[L.C.Leach]] 1988 (s)
*''[[Euphorbia vachellii]]'' [[Hook.]] & [[Arn.]] 1837
*''[[Euphorbia vaginulata]]'' [[Griseb]] 1859 (s)
*''[[Euphorbia vajravelui]]'' [[Binojk.]] & [[N.P.Balakr.]] 1991 (s)
*''[[Euphorbia valerianifolia]]'' [[Jean-Baptiste Lamarck|Lam.]] 1788
*''[[Euphorbia valerii]]'' [[Standl.]] 1927
*''[[Euphorbia vallaris]]'' [[L.C.Leach]] 1974 (s)
*''[[Euphorbia valliniana]]'' [[Belli]] 1904
*''[[Euphorbia vallismortuae]]'' ([[Millsp.]]) [[Howell]] 1931
*''[[Euphorbia vandermerwei]]'' [[R.A.Dyer]] 1937 (s)
*''[[Euphorbia variabilis]]'' [[Ces.]] 1838
*''[[Euphorbia vauthieriana]]'' [[Boiss.]] 1860
*''[[Euphorbia vedica]]'' [[S.Ter-Chatschat.]] 1965
*''[[Euphorbia velleriflora]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia velligera]]'' [[S.Schauer]] ex [[Nees]] & [[S.Schauer]] 1847
*''[[Euphorbia venenata]]'' [[Marloth]] 1930 (s)
*''[[Euphorbia venenifica]]'' [[Kotschy]] ex [[Boiss.]] 1862 (s)
*''[[Euphorbia veneris]]'' [[M.S.Khan]] 1963
*''[[Euphorbia veneta]]'' [[Carl Ludwig Willdenow|Willd.]] 1809
*''[[Euphorbia venteri]]'' [[L.C.Leach]] ex [[R.H.Archer]] & [[S.Carter]] 2001 (s)
*''[[Euphorbia verapazensis]]'' [[Standl.]] & [[Steyerm.]] 1944 (s)
*''[[Euphorbia vermiculata]]'' [[Constantine Samuel Rafinesque-Schmaltz|Raf.]] 1818
*''[[Euphorbia verrucosa]]'' [[Carolus Linnaeus|L.]] 1753
*''[[Euphorbia verruculosa]]'' [[N.E.Br.]] 1925 (s)
*''[[Euphorbia versicolores]]'' [[G.Will.]] 1995 (s)
*''[[Euphorbia vervoorstii]]'' [[Subils]] 1971
*''[[Euphorbia vestita]]'' [[Boiss.]] 1860
*''[[Euphorbia vezorum]]'' [[Leandri]] 1947
*''[[Euphorbia viatilis]]'' [[Ule]] 1909
*''[[Euphorbia viduiflora]]'' [[L.C.Leach]] 1974 (s)
*''[[Euphorbia viguieri]]'' [[Denis]] 1921 (s)
**''[[Euphorbia viguieri var. ankarafantsiensis]]'' [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia viguieri var. capuroniana]]'' [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia viguieri var. tsimbazazae]]'' [[Ursch]] & [[Leandri]] 1955 (s)
**''[[Euphorbia viguieri var. viguieri]]'' (s)
**''[[Euphorbia viguieri var. vilanandrensis]]'' [[Ursch]] & [[Leandri]] 1955 (s)
*''[[Euphorbia villifera]]'' [[Scheele]] 1849
*''[[Euphorbia villosa]]'' [[Waldst.]] & [[Kit.]]l ex [[Carl Ludwig Willdenow|Willd.]] 1799
**''[[Euphorbia villosa ssp. semivillosa]]'' ([[Prokh.]]) [[Oudejans]] 1992
**''[[Euphorbia villosa ssp. valdevillosocarpa]]'' ([[Arvat.]] & [[Nyar.]]) [[R.Turner]] 1995
**''[[Euphorbia villosa ssp. villosa]]''
*''[[Euphorbia viminea]]'' [[Hook.f.]] 1847
*''[[Euphorbia violacea]]'' [[Greenm.]] 1898
*''[[Euphorbia viridis]]'' ([[Klotzsch]] & [[Garcke]] ex [[Klotzsch]]) [[Boiss.]] 1862
*''[[Euphorbia viridula]]'' [[Cordemoy]] ex [[Radcl.-Sm.]] 1978
*''[[Euphorbia virosa]]'' [[Carl Ludwig Willdenow|Willd.]] 1930 (s)
**''[[Euphorbia virosa ssp. arenicola]]'' [[L.C.Leach]] 1971 (s)
**''[[Euphorbia virosa ssp. virosa]]'' (s)
*''[[Euphorbia viscoides]]'' [[Boiss.]] 1860
*''[[Euphorbia vittata]]'' [[S.Carter]] 1982 (s)
*''[[Euphorbia volgensis]]'' [[Kryshtof.]] 1929
*''[[Euphorbia volhynica]]'' [[Besser]] ex [[M.Raciborski]] 1921
*''[[Euphorbia volkii]]'' [[Rech.f.]] 1963
*''[[Euphorbia volkmanniae]]'' [[Dinter]] 1928 (s)
*''[[Euphorbia vulcanorum]]'' [[S.Carter]] 1982 (s)

==W==
{{compactTOC2}}
*''[[Euphorbia wakefieldii]]'' [[N.E.Br.]] 1912 (s)
*''[[Euphorbia waldsteinii]]'' ([[Soják]]) [[Radcl.-Sm.]] 1981
**''[[Euphorbia waldsteinii var. jaxartica]]'' ([[Prokh.]]) [[Oudejans]] 1989
**''[[Euphorbia waldsteinii var. orientalis]]'' ([[Boiss.]]) [[Oudejans]] 1990
**''[[Euphorbia waldsteinii var. saratoi]]'' ([[Ardoino]]) [[Oudejans]] 1992
**''[[Euphorbia waldsteinii var. waldsteinii]]''
*''[[Euphorbia wallichii]]'' [[Hook.f.]] 1887
*''[[Euphorbia wangii]]'' [[Oudejans]] 1989
*''[[Euphorbia waringiae]]'' [[Rauh]] & [[R.Gerold]] 1998 (s)
*''[[Euphorbia waterbergensis]]'' [[R.A.Dyer]] 1951 (s)
*''[[Euphorbia weberbaueri]]'' [[R.Mansfeld]] 1931 (s)
*''[[Euphorbia wellbyi]]'' [[N.E.Br.]] 1911
*''[[Euphorbia wellbyi var. wellbyi]]''
*''[[Euphorbia wellbyi var. glabra]]'' [[S.Carter]] 1985
*''[[Euphorbia welwitschii]]'' [[Boiss.]] & [[Reut.]] 1852
*''[[Euphorbia wheeleri]]'' [[Baillon]] 1866
*''[[Euphorbia whellanii]]'' [[L.C.Leach]] 1967 (s)
*''[[Euphorbia whyteana]]'' [[Baker f.]] 1894
*''[[Euphorbia wildii]]'' [[L.C.Leach]] 1975 (s)
*''[[Euphorbia williamsonii]]'' [[L.C.Leach]] 1969 (s)
*''[[Euphorbia wilmaniae]]'' [[Marloth]] 1931 (s)
*''[[Euphorbia wilsonii]]'' ([[Millsp.]]) [[Correll]] 1980
*''[[Euphorbia wittmannii]]'' [[Boiss.]] 1860
*''[[Euphorbia woodii]]'' [[N.E.Br.]] 1915 (s)
*''[[Euphorbia wootonii]]'' [[Oudejans]] 1989
*''[[Euphorbia woronowii]]'' [[Grossh.]] 1916
*''[[Euphorbia wrightii]]'' [[Torr.]] & [[A.Gray]] 1857 (s) - Wright's spurge

==X==
{{compactTOC2}}
*''[[Euphorbia xalapensis]]'' [[Carl Sigismund Kunth|Kunth]] 1817
*''[[Euphorbia xanti]]'' [[Engelm.]] ex [[Boiss.]] 1862 (s)
*''[[Euphorbia xbacensis]]'' [[Millsp.]] 1898
*''[[Euphorbia xeropoda]]'' [[Brandegee]] 1917
*''[[Euphorbia xylacantha]]'' [[Ferdinand Albin Pax|Pax]] 1904 (s)
*''[[Euphorbia xylopoda]]'' [[Greenm.]] 1898

==Y==
{{compactTOC2}}
*''[[Euphorbia yamashitae]]'' [[Kitam.]] 1958
*''[[Euphorbia yajinensis]]'' [[W.T.Wang]] 1988
*''[[Euphorbia yaroslavii]]'' [[P.P.Poljakov]] 1961
*''[[Euphorbia yattana]]'' ([[P.R.O.Bally]]) [[Bruyns]] 2006 (s) syn. Monadenium yattanum
*''[[Euphorbia yayalesia]]'' [[Urb.]] 1930
*''[[Euphorbia yemenica]]'' [[Boiss.]] 1860
*''[[Euphorbia yinshanica]]'' [[S.Q.Zhou]] 1989
*''[[Euphorbia yucatanensis]]'' ([[Millsp.]]) [[Standl.]] 1930

==Z==
{{compactTOC2}}
*''[[Euphorbia zakamenae]]'' [[Leandri]] 1945 (s)
*''[[Euphorbia zambesiana]]'' [[George Bentham|Benth.]] 1880 (s)
**''[[Euphorbia zambesiana var. benguelensis]]'' ([[Ferdinand Albin Pax|Pax]]) [[N.E.Br.]] 1911 (s)
**''[[Euphorbia zambesiana var. zambesiana]]'' (s)
*''[[Euphorbia zeylana]]'' [[N.E.Br.]] 1913
*''[[Euphorbia zierioides]]'' [[Boiss.]] 1862
*''[[Euphorbia zornioides]]'' [[Boiss.]] 1862
*''[[Euphorbia zoutpansbergensis]]'' [[R.A.Dyer]] 1938 (s)

== Footnotes ==
{{Reflist}}

== References ==
* {{aut|Bruyns, Peter V. & al.}} (2006): ''A new subgeneric classification for ''Euphorbia'' (Euphorbiaceae) in southern Africa based on ITS and psbA-trnH sequence data''. ''[[Taxon (journal)|Taxon]]'' '''55'''(2): 397–420. [http://www.ingentaconnect.com/content/iapt/tax/2006/00000055/00000002/art00013 HTML abstract]
* {{aut|Steinmann, V.W.}} (2003): The submersion of ''Pedilanthus'' into ''Euphorbia'' (Euphorbiaceae). ''Acta Botanica Mexicana'' '''65''': 45-50. [http://www.ecologia.edu.mx/publicaciones/resumeness/ABM/ABM.65.2003/acta65(45-50).pdf PDF fulltext] [English with Spanish abstract]
* {{aut|Steinmann, V.W. & Porter, J.M.}} (2002): ''Phylogenetic relationships in Euphorbieae (Euphorbiaceae) based on ITS and ndhF sequence data''. ''Annals of the Missouri Botanical Garden'' '''89'''(4): 453–490. {{doi|10.2307/3298591}} (HTML abstract, first page image)

==External links==
{{commonscat-inline|Euphorbia}}
[[Category:Euphorbia]]
[[Category:Lists of plants|Euphorbia species]]

[[es:Anexo:Especies de Euphorbia]]
[[it:Specie di Euphorbia]]
[[hu:Euphorbia-fajok listája]]

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List of Euphorbia species (view source)

Revision as of 18:09, 8 October 2008