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|familia=Rosaceae
|genus=Prunus
|genus=Prunus
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|image_caption=Plum (''Prunus domestica'')
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'''Prunus''' is a [[genus]] of [[tree]]s and [[shrub]]s, including the [[plum]]s, [[cherry|cherries]], [[peach]]es, [[apricot]]s and [[almond]]s. It is traditionally placed within the [[rose]] family [[Rosaceae]] as a [[subfamily]], the [[Prunoideae]] (or [[Amygdaloideae]]), but sometimes placed in its own family, the [[Prunaceae]] (or Amygdalaceae). There are several hundred species of ''Prunus'', spread throughout the northern temperate regions of the globe.
The flowers are usually white to pink, with five [[petal]]s and five [[sepal]]s. They are borne singly, or in [[umbel]]s of two to six or more on [[raceme]]s. The fruit of all ''Prunus'' species is a [[drupe]] with a relatively large "stone". Leaves are simple and usually [[leaf shape|lanceolate]], unlobed and toothed along the margin.
The genus ''Prunus'' includes the [[almond]], [[apricot]], [[cherry]], [[peach]] and [[plum]], all of which have [[cultivar]]s developed for commercial [[fruit]] production. The edible part of the almond is the seed; the almond fruit is a drupe and not a "[[Nut (fruit)|nut]]". There are also a number of species, [[hybrid]]s, and [[cultivar]]s grown strictly as [[ornamental plant]]s, usually for their profusion of flowers, occasionally for leaves and bark. These ornamentals include the group that may be collectively called ''flowering cherries''.
Because of their considerable value as both food and ornamental plants, many ''Prunus'' species have been [[introduced species|introduced]] to parts of the world to which they are not native. Many of the Old World species are grown for ornament or fruit, and have been planted throughout the world; and some have become naturalised beyond their native range.
==Cultivation==
===Propagation===
===Pests and diseases===
==Species==
Selected species by continent.
Note: these lists are probably incomplete.
===Old World:===
*''Prunus africana'' - African Cherry, Red Stinkwood, [[Pygeum]]. [[Afromontane|Montane forests]] of [[Sub-Saharan Africa]] and [[Madagascar]]. Over-harvesting of bark for herbal remedies has led to it becoming endangered it its natural habitats.
*''Prunus apetala'' - Japan.
*''Prunus armeniaca'' - [[Apricot]]. Central Asia to China.
*''Prunus avium'' - [[Wild Cherry]], also called the Gean, Mazzard, or Sweet Cherry, and the parent of most of the edible [[cherry|cherries]]. Europe to West Asia.
*''Prunus brigantina'' - Briançon Apricot. Southeast France.
*''Prunus buergeriana'' - Japan.
*''Prunus campanulata'' - Bell-flowered Cherry. Southern China, Taiwan.
*''Prunus canescens'' - Greyleaf Cherry. China.
*''Prunus cantabridgensis'' - Cambridge Cherry. Unknown origin, probably east Asia, possibly hybrid.
*''Prunus caspica''
*''Prunus cerasus'' - [[Sour Cherry]] or Morello Cherry. Europe and southwest Asia.
*''Prunus cerasifera'' - Myrobalan Plum or [[Cherry Plum]]. Southeast Europe and southwest Asia.
*''[[Prunus cerasoides]]''- Wild Himalayan cherry
*''Prunus cocomilia'' - Naples Plum. Southeast Europe (Italy, Balkans).
*''Prunus cornuta'' - Himalayan Bird Cherry. Himalaya.
*''Prunus crassifolia'' - One of only two ''Prunus'' species native to Africa.
*''Prunus dasycarpa'' - Black Apricot. Probably a hybrid ''P. armeniaca'' x ''P. cerasifera''.
*''Prunus davidiana'' - David's Peach. China.
*''Prunus divaricata''
*''Prunus domestica'' - [[Plum]]. Believed to be a hybrid, probably from West Asia and the Caucasus.
*''Prunus domestica'' var. ''insititia'' - [[Bullace]] and [[Damson]]
*''Prumus domestica'' var. ''italica'' - [[Greengage]]
*''Prunus domestica'' var. ''syriaca'' - [[Mirabelle]]
*''Prunus dulcis'' - [[Almond]]. Southeast Europe, southwest Asia.
*''Prunus fruticosa'' - Ground Cherry. Northeastern Europe, northern Asia.
*''Prunus grayana'' - Gray's Bird Cherry. Japan.
*''Prunus incana'' - Willow Cherry. Asia Minor, Caucasus.
*''Prunus incisa'' - Fuji Cherry. Japan.
*''Prunus insititia''
*''Prunus italica''
*''Prunus jacquemontii'' - Afghan Cherry. Northwest Himalaya in Afghanistan and Pakistan.
*''Prunus japonica'' - China, (cultivated in Japan).
*''Prunus laurocerasus'' - [[Cherry laurel|Cherry Laurel]], of the Balkans and West Asia.
*''Prunus lusitanica'' - Portugal Laurel. From Iberia.
*''Prunus maackii'' - [[Manchurian Cherry]]. Northeast Asia.
*''Prunus mahaleb'' - St Lucie Cherry, or Mahaleb Cherry. Europe.
*''Prunus maximowiczii'' - Japan, Korea, Manchuria, Russian far east.
*''Prunus mume'' - [[Ume]], aka Japanese apricot. China and Japan.
*''Prunus nipponica'' - Japanese Alpine Cherry. Japan.
*''Prunus padus'' - Bird Cherry. Northern Eurasia.
*''Prunus persica'' - [[Peach]], origin uncertain, probably West Asia.
*''Prunus prostrata'' - Mountain Cherry. Mediterranean region.
*''Prunus ramburii''
*''Prunus salicina'' - Japanese Plum. Japan, China.
*''Prunus sargentii'' - Sargent's Cherry. Northern Japan.
*''Prunus serrula'' - Tibetan Cherry. Western China to central Asia.
*''Prunus serrulata'' - Japanese Cherry ([[Sakura]]). Eastern Asia.[[Image:Japanese-Cherry.web.jpg|thumb|right|300px|Japanese Cherry (''Prunus serrulata'') in bloom]]
*''Prunus sibirica'' - Siberian Apricot. Northeastern Asia.
*''Prunus simonii'' - Apricot Plum. Northern China.
*''Prunus sogdiana''
*''Prunus speciosa'' - Oshima Cherry. Oshima & Izu Islands of Japan.
*''Prunus spinosa'' - [[Blackthorn]] or Sloe. Europe, North Africa, West Asia.
*''Prunus spinulosa'' - central and southern Japan.
*''Prunus ssiori'' - Japan, Manchuria, Russian far east.
*''Prunus subhirtella'' - origin uncertain, but probably East Asia.
*''Prunus tenella'' - Dwarf Russian Almond. Black Sea area.
*''Prunus tomentosa'' - Downy Cherry. Southwestern China, Himalaya.
*''Prunus ussuriensis''
*''Prunus ursina''
*''Prunus verecunda'' - Japan, Korea.
*''Prunus yedoensis'' - Yoshino Cherry. Japan, probably of cultivated hybrid origin.
*''Prunus zippeliana'' - central and southern Japan, Taiwan.
===North America:===
*''Prunus allegheniensis'' - Allegheny Plum. In the Appalachian belt.
*''Prunus americana'' - American Plum. Most of the U.S. east of the Great Plains and southernmost Canada.
*''Prunus andersonii'' - [[Prunus andersonii|Desert Peach]]. Western U.S.
*''Prunus angustifolia'' - Chickasaw Plum. Southeast U.S.
*''Prunus besseyi'' - Rocky Mountain Cherry. Great Plains & eastern Rocky Mts.
*''Prunus caroliniana'' - Carolina Cherry Laurel. Southeast U.S.
*''Prunus emarginata'' - [[Bitter Cherry]]. British Columbia to California.
*''Prunus hortulana'' - Hortulan Plum. Mostly Missouri and Illinois and surrounding areas.
*''Prunus ilicifolia''. [[Prunus ilicifolia|Hollyleaf Cherry]]. California.
*''Prunus maritima'' - [[Beach plum|Beach Plum]]. Northeast Atlantic coast.
*''Prunus mexicana'' - Bigtree Plum. Southeast Great Plains.
*''[[Prunus munsoniana]]'' - Wild-goose Plum. Mostly Missouri and eastern Kansas and surrounding areas.
*''Prunus nigra'' - Canada Plum. Southeasternmost Canada west to Manitoba and northeasternmost U.S.
*''Prunus pensylvanica'' - [[Pin cherry|Pin Cherry]]. Southern half of Canada and northernmost U.S.
*''Prunus pumila'' - [[Prunus pumula|Sand Cherry]]. Southeast and south-central Canada and northern U.S. west to Wyoming.
*''Prunus serotina'' - [[Black Cherry]]. Southeasternmost Canada and most of U.S. east of Great Plains, also found in Arizona and Guatemala.
*''Prunus subcordata'' - [[Prunus subcordata|Klamath Plum]]. Oregon, California.
*''Prunus virginiana'' - [[Chokecherry]]. Southern Canada and most of eastern U.S. except for deep south.
==Classification==
Some treatments break the genus up into several different genera, but this segregation is not widely recognised other than at the subgeneric rank. [[Integrated Taxonomic Information System|ITIS]] recognises just the single Genus ''Prunus'', with the incomplete list of [[species]] as shown in the box on the right.
*'''''Prunus'' subgenera:'''
**Subgenus ''Amygdalus'': [[almond]]s and [[peach]]es. Axillary buds in threes (vegetative bud central, two flower buds to sides). Flowers in early spring, sessile or nearly so, not on leafed shoots. Fruit with a groove along one side; stone deeply grooved. Type species ''Prunus dulcis'' (Almond).
**Subgenus ''Prunus'': [[plum]]s and [[apricot]]s. Axillary buds solitary. Flowers in early spring stalked, not on leafed shoots. Fruit with a groove along one side; stone rough. Type species ''Prunus domestica'' (Plum).
**Subgenus ''Cerasus'': [[cherry|cherries]]. Axillary buds single. Flowers in early spring in corymbs, long-stalked, not on leafed shoots. Fruit not grooved; stone smooth. Type species ''Prunus cerasus'' (Sour cherry).
**Subgenus ''Lithocerasus'': [[dwarf cherry|dwarf cherries]]. Axillary buds in threes. Flowers in early spring in corymbs, long-stalked, not on leafed shoots. Fruit not grooved; stone smooth. Type species ''Prunus pumila'' (Sand cherry).
**Subgenus ''Padus'': [[bird cherry|bird cherries]]. Axillary buds single. Flowers in late spring in racemes on leafy shoots, short-stalked. Fruit not grooved; stone smooth. Type species ''Prunus padus'' (European bird cherry).
**Subgenus ''Laurocerasus'': [[cherry-laurel]]s. Axillary buds single. Flowers in early spring in racemes, not on leafed shoots, short-stalked. Fruit not grooved; stone smooth. Mostly [[evergreen]] (all the other subgenera are [[deciduous]]). Type species ''Prunus laurocerasus'' (European cherry-laurel).
==Gallery==
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Image:Upload.png| photo 1
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==Standard Cyclopedia of Horticulture==
{{Inc|
{{Inc|
Prunus (ancient Latin name of plum). Rosaceae. The Stone-fruits, as Plum. Cherry. Peach, Nectarine, Apricot, Almond. Pink-flowered and white-flowered shrubs and trees of wide distribution, grown for fruit, and also for ornamental foliage and flowers.
Prunus (ancient Latin name of plum). Rosaceae. The Stone-fruits, as Plum. Cherry. Peach, Nectarine, Apricot, Almond. Pink-flowered and white-flowered shrubs and trees of wide distribution, grown for fruit, and also for ornamental foliage and flowers.
In very recent years, the knowledge of the genus has been greatly extended by explorations in China, whence many new species (particularly in the subgenera Cera- sus and Padus) have been derived that will probably find their way into cultivation. The taxonomy of the American native plums has also received much recent attention. Aside from the older writings of Bailey and Waugh on the native edible plums and cherries, see Hedrick,"The Plums of New York," 1911, and "The Cherries of New York," 1915 (also with similar accounts of all other pomological species), and Wight,"Varieties of Plums Derived from Native American Species," Bulletin No. 172, Bureau of Plant Industry, United States Department of Agriculture, 1915, and "Native American Species of Prunus," Bulletin No. 179 (1915). For the oriental Prunus, particularly those native in China, see the work by Koehne and others in "Plantae Wilsonianae," vol. 1, 1911-1913, and Wilson's "Cherries of Japan" (1916), published by the Arnold Arboretum, Boston. As this writing is being closed in the printery, a paper on the Japanese cherries appears in Japan: Miyoshi, "Japanische Bergkirschen, in Journ. Coll.Sci. Tokyo, vol. 34, art. 1 (1916) with eighty-nine colored figures.
In very recent years, the knowledge of the genus has been greatly extended by explorations in China, whence many new species (particularly in the subgenera Cera- sus and Padus) have been derived that will probably find their way into cultivation. The taxonomy of the American native plums has also received much recent attention. Aside from the older writings of Bailey and Waugh on the native edible plums and cherries, see Hedrick,"The Plums of New York," 1911, and "The Cherries of New York," 1915 (also with similar accounts of all other pomological species), and Wight,"Varieties of Plums Derived from Native American Species," Bulletin No. 172, Bureau of Plant Industry, United States Department of Agriculture, 1915, and "Native American Species of Prunus," Bulletin No. 179 (1915). For the oriental Prunus, particularly those native in China, see the work by Koehne and others in "Plantae Wilsonianae," vol. 1, 1911-1913, and Wilson's "Cherries of Japan" (1916), published by the Arnold Arboretum, Boston. As this writing is being closed in the printery, a paper on the Japanese cherries appears in Japan: Miyoshi, "Japanische Bergkirschen, in Journ. Coll.Sci. Tokyo, vol. 34, art. 1 (1916) with eighty-nine colored figures.
Index.
acida, 53. aureo-variegata, 77. Cereola, 8.
acida, 53. aureo-variegata, 77. Cereola, 8.
alba, 34. asorica, 77. cochin-chinensis, 29.
alba, 34. asorica, 77. cochin-chinensis, 29.
albs-plena, 2, 32, Banriko, 56. Cocomilia, 6.
albs-plena, 2, 32, Banriko, 56. Cocomilia, 6.
33, 40. Benden, 55. colchica, 78.
Alberti, 74. Benitoranowo, 56. communis, 8, 32.
Alberti, 74. Benitoranowo, 56. communis, 8, 32.
albida, 56. Bertinii, 78. commutata, 74.
albida, 56. Bertinii, 78. commutata, 74.
Amygdalus, 32. campanulata, 56, 62. dasycarpa, 4.
Amygdalus, 32. campanulata, 56, 62. dasycarpa, 4.
angustifolia, 5, 15, campestris, 29. Davidiana, 34.
angustifolia, 5, 15, campestris, 29. Davidiana, 34.
20, 54, 77, 78. canescens, 65. Davisii, 23.
Ansu, 1. caproniana, 53. decumana, 54.
Ansu, 1. caproniana, 53. decumana, 54.
apetala, 69. Capollin, 70. demissa, 73.
apetala, 69. Capollin, 70. demissa, 73.
iwagiensis, 68. pilosa, 69. triflora, 9.
iwagiensis, 68. pilosa, 69. triflora, 9.
japonica, 9, 39, pilosiusoula, 48. triloba, 27.
japonica, 9, 39, pilosiusoula, 48. triloba, 27.
64, 78. Pissardii, 5. Tschoneskii, 69.
jonioi, 56. plantieriensis, 5. typica, 32, 53.
jonioi, 56. plantieriensis, 5. typica, 32, 53.
Juliana, 54. platycarpa, 33. Uduxuzakura, 55.
Juliana, 54. platycarpa, 33. Uduxuzakura, 55.
P. bicolor, Koehne. Allied to P. Padus. Tree, to 40 ft.: branch- lets finely velutinous: lvs. obovate-oblong, acuminate, subeordate or rounded at base, serrulate, glabrous and whitish beneath, 2-4 in. long: fruiting raceme to 5 in. long: fr. globose, 1/5in. across. W. Chiana.—P. conadenia, Koehne. Allied to P. Maximowiczii. Tree, to 30 ft.: lvs. obovate, acuminate, usually rounded at base, doubly serrate, finally glabrous, 1 1/2-3 1/2in. long: fls. white, about 1/2in. across, in 5—8-fld. racemes: fr. ovoid, red. W. China.—P. concinna, Koehne (P. Zappeyana, Koehne). Allied to P. lobulata (and has been cult, as P. subhirtella). Shrub, to 15 ft.: lvs. rhombic-oblong too obo- vate-oblong, acuminate, rounded at the base, doubly incised-serrate, nearly glabrous, 1-3 in. long: fls. white, 1-2, precocious, about 3/4in. across; pedicels and calyx glabrous: fr. dark red or black. Cent. China.—P. consociiflora. Schneid.=P. salicina.—P. cyclamina, Koehne (subgen. Cerasus). Tree, to 25 ft.: lvs. obovate-oblong. acuminate, rounded at base, sharply simply or doubly serrate, at first sparingly pubescent on the veins, 2—4 in. long: fls. umbellate, 3-4, pink, 1 1/3in. across: sepals reflexed: fr. subglobose. red. 1/3in. across. Cent. China.—P. dehiscens, Koehne (subgen. Amygdalus). Spiny shrub, to 12 ft.: lvs. usually fascicled, oblong to oblanceolate, acute or obtuse, cuneate at the base, crenulate, glabrous, '1/2-1 1/3in. long: fls. subsessile; sepals roundish: fr. roundish, slightly compressed, about 3/4in. across, greenish, densely tomentose, finally dehiscent: stone slightly compressed, keeled, slightly rugose. W.China.—P.Dielsian, Schneid, (subgen. Cerasus). Shrub or tree, to .30 ft.: lvs. oblong, abruptly acuminate, cuneate or rounded at the base, simply or doubly serrate, pubescent beneath, 3-6 in. long: fls. umbellate, 3-5, with persistent involucre, white or pink, 1 1/4in across; sepals reflexed, oblong to lanceolate: fr. globose, red, 1/3in. across. Cent. China.—P. discadenia, Koehne. Allied to P. Maxi- mowiczii. Shrub or tree, to 35 ft.: lvs. ovate or obovate. acuminate, usually rounded or cordate at base, unequally serrate, glabrous, 2-4 in. long: fls. white, 3/4in. across, in 3-9fld. racemes: fr. subglo- bose, 2/5in. across. Cent. China.—P. glyptocarya, Koehne. Allied to P. lobulata. Tree, to 30 ft.: branchlets pubescent: lvs. oblong to obovate-oblong, acuminate, usually rounded at base, deeply doubly serrate, pubescent beneath, 2-4 1/3- lone: fls. umbellate: fr. globose, 1/2in, across, dark red; stone reticulate and ribbed. W. China.—P. Jacquemontii, Hook. f. Allied to P. prostrata. Low shrub, glabrous: lvs, elliptic-oblong, acute or short-acuminate, cuneate at base, serrate, light green beneath, 3/4-1 3/4in. long: fls. 1-3, short-stalked, pink, 1/2in. across: calyx tubular: fr. ovoid, 1/3in, long, dark purple. W. Himalayas. B.M. 6976.—P. macro- phylla, Sieb. & Zuce. Allied to P. Laurocerasus. Evergreen tree, to 30 ft.: lvs. oblong, acuminate, broadly cuneate at base, serrulate, glabrous, 4-7 in. long: fls. white, in dense racemes 1-1 1/2in. long: fr. ovoid, 3/4in. long. S. Japan. S.I.F. 1.29.—P. mira, Koehne. Allied to P. Persica. Tree, to 30 ft.: lvs. lanceolate, long-acuminate, rounded at base, crenulate-serrulate, villous beneath along the midrib, otherwise glabrous, 2-4in.long: fr. short- stalked, subglobose, 1 1/4 in. across, tomentose, edible; stone ovate, compressed, keeled, smooth. W. China. Differs from all peaches in its smooth stone. Hardy at Arnold Arboretum.—P. perulata, Koehne (subgen. Padus). Tree, to 40 ft. : lvs. elliptic to oblanceolate, acuminate, rounded or broadly cuneate at base, serrulate, sparingly pubescent beneath, 2 1/2-4 1/2in. long: racemes 2-3 in. long, velutin- ous, with a persistent involucre at base, leafless: fr. globose, 1/5in. across; calyx persistent. W. China.—P. pleiocerasus, Koehne. Allied to P. Maximowiczii. Tree, to 25 ft.: lvs. obovate-oblong. caudate-acuminate, rounded or cuneate at base, unequally serrate, glabrous or nearly so beneath, 1 /4-3 1/2in. long: fls. white, in 4-7- fld. racemes: fr. globose, dark red or black. W. China.—P. pleurop- tera, Koehne. Allied to P. lobulata. Tree, to 30 ft.: brauehlets hairy: lvs. obovate to rhombic-oblong, acuminate, usually cuneate at base, incisely doubly serrate, pubescent beneath on the veins, 3/4-2 1/3in. long: fr. usually solitary, subglobose, 1/2in. long, black; stone sulcate and foveolate. W. China.—P. polytricha, Koehne. Allied to P. Maximowiczii. Tree, to 30 ft.: branelilets villous: lvs. obovate to obovate-oblong, caudate, usually rounded at base, doubly serrate, pubescent on both sides, 1 1/2-3in. long: frs. 1-2 on a bracted peduncle 1/5-1/2in. long, ovoid, red. 1/3in. long; pedicels villous, about 1 in. long. Cent. China.—P. pubigera, Koehne (P.pubigera var. Potaninii, Koehne). Allied to P. Padus. Tree, to 60ft.: branchlets minutely velutinous: lvs. obovate-oblong, short- acuminate, subcordate or cordate at the base, minutely serrulate, glabrous and whitish beneath, 1 1/2-4 1/4in. long; petioles puberu-lous: racemes 3-6in. long: fr. about 1/4in. across. W. China. Var. Prattii, Koehne. Lvs. cuneate or rounded at base; petioles glabrous. Var. obovata, Koehne. Lvs. obovate, rounded at base; petioles glabrous.—P. rufomicans, Koehne (subgen. Padus). Tree, to 80 ft.: lvs. of flowering branehlets lanceolate to oblong-lanceo- late, about 2 in. long, of sterile branches usually obovate, 3—4 in. long, sharply serrulate, rufous-tomentose beneath: fruiting raceme 5 in. long, glabrous: fr. subglobosc, 2/5in. across. W. China.—P. sericea, Koehne (P. napaulensis var. sericea, Batal). Tree, to 80 ft. : lvs. elliptic to oblong, rounded or cuneate at base, remotely serrate, white-tomentose at first, later grayish tomentose. 3-5 in. long: racemes 4-5 in. long, densely short-pilose: fr. subglobose, 3/5in. long, black. W. China.—P. stellipila, Koehne (subgen. Padus). Tree, to 20 ft.: lvs. elliptic to narrow-oblong, long-acuminate, broadly cuneate or nearly rounded at base, sharply serrate, sparingly pubescent beneath, 2-4 in. long: racemes upright, 1 3/4-2in. long, without lvs. at the base: fr. globose, 1/5in. across. Cent. China.—P. tangutica, Koehne (Amygdalus communis var. tan- gutica. Batal). spiny shrub: lvs. fascicled, lanceolate, obtuse or acutish, crenulate-serrulate, 1-2 in. long: fls. sessile, about 1 in. across: fr. subglobose, 4/5in- across, somewhat compressed, rather dry; stone irregularly furrowed. N. W. China.—P. tatsienensis, Batal. Allied to P. Maximowicxii. Tree: lvs. ovate to obovate, acuminate, serrulate, 1 1/2-2 1/2in. long: fls. white, 3/4in. across in 3-7-fld. racemes with large leafy bracts. W. China. Var. stena- denia, Koehne. Tree, to 30 ft., quite glabrous: lvs. obovate-oblong, caudate, cuneate or rounded at base: fr. globose, dark red, 2/5in. across. W. China.—P. venoea, Koehne (subgen. Padus). Tree, to 35 ft.: lvs. oblong-obovate to obovate-oblanceolate, acuminate, cuneate or nearly rounded at base, sharply serrate, reticulate beneath, glabrous except the bearded axils, 2 1/2-4 1/2in. long: racemes without lvs. at base, 1 1/2-4 in. long: fr. globose, about 1/3in. across. Cent. China.—P. Wilsonii, Koehne (Padus Wilsonii, Schneid.). Tree, to 30 ft.: lvs. elliptic-oblong to obovate-oblong, acuminate, usually cuneate at base, remotely serrate, whitish pubescent beneath, 3 1/2-5 in. long: racemes pubescent, 5-6 in. long: fr. ovoid, 1/2in. long, black. Cent. China. Var. leiobotrys, Koehne. Lvs. closely serrulate, grayish beneath; racemes glabrous.—P. Zappeyana, Koehne=P. concinna. L. H. B.
P. bicolor, Koehne. Allied to P. Padus. Tree, to 40 ft.: branch- lets finely velutinous: lvs. obovate-oblong, acuminate, subeordate or rounded at base, serrulate, glabrous and whitish beneath, 2-4 in. long: fruiting raceme to 5 in. long: fr. globose, 1/5in. across. W. Chiana.—P. conadenia, Koehne. Allied to P. Maximowiczii. Tree, to 30 ft.: lvs. obovate, acuminate, usually rounded at base, doubly serrate, finally glabrous, 1 1/2-3 1/2in. long: fls. white, about 1/2in. across, in 5—8-fld. racemes: fr. ovoid, red. W. China.—P. concinna, Koehne (P. Zappeyana, Koehne). Allied to P. lobulata (and has been cult, as P. subhirtella). Shrub, to 15 ft.: lvs. rhombic-oblong too obo- vate-oblong, acuminate, rounded at the base, doubly incised-serrate, nearly glabrous, 1-3 in. long: fls. white, 1-2, precocious, about 3/4in. across; pedicels and calyx glabrous: fr. dark red or black. Cent. China.—P. consociiflora. Schneid.=P. salicina.—P. cyclamina, Koehne (subgen. Cerasus). Tree, to 25 ft.: lvs. obovate-oblong. acuminate, rounded at base, sharply simply or doubly serrate, at first sparingly pubescent on the veins, 2—4 in. long: fls. umbellate, 3-4, pink, 1 1/3in. across: sepals reflexed: fr. subglobose. red. 1/3in. across. Cent. China.—P. dehiscens, Koehne (subgen. Amygdalus). Spiny shrub, to 12 ft.: lvs. usually fascicled, oblong to oblanceolate, acute or obtuse, cuneate at the base, crenulate, glabrous, '1/2-1 1/3in. long: fls. subsessile; sepals roundish: fr. roundish, slightly compressed, about 3/4in. across, greenish, densely tomentose, finally dehiscent: stone slightly compressed, keeled, slightly rugose. W.China.—P.Dielsian, Schneid, (subgen. Cerasus). Shrub or tree, to .30 ft.: lvs. oblong, abruptly acuminate, cuneate or rounded at the base, simply or doubly serrate, pubescent beneath, 3-6 in. long: fls. umbellate, 3-5, with persistent involucre, white or pink, 1 1/4in across; sepals reflexed, oblong to lanceolate: fr. globose, red, 1/3in. across. Cent. China.—P. discadenia, Koehne. Allied to P. Maxi- mowiczii. Shrub or tree, to 35 ft.: lvs. ovate or obovate. acuminate, usually rounded or cordate at base, unequally serrate, glabrous, 2-4 in. long: fls. white, 3/4in. across, in 3-9fld. racemes: fr. subglo- bose, 2/5in. across. Cent. China.—P. glyptocarya, Koehne. Allied to P. lobulata. Tree, to 30 ft.: branchlets pubescent: lvs. oblong to obovate-oblong, acuminate, usually rounded at base, deeply doubly serrate, pubescent beneath, 2-4 1/3- lone: fls. umbellate: fr. globose, 1/2in, across, dark red; stone reticulate and ribbed. W. China.—P. Jacquemontii, Hook. f. Allied to P. prostrata. Low shrub, glabrous: lvs, elliptic-oblong, acute or short-acuminate, cuneate at base, serrate, light green beneath, 3/4-1 3/4in. long: fls. 1-3, short-stalked, pink, 1/2in. across: calyx tubular: fr. ovoid, 1/3in, long, dark purple. W. Himalayas. B.M. 6976.—P. macro- phylla, Sieb. & Zuce. Allied to P. Laurocerasus. Evergreen tree, to 30 ft.: lvs. oblong, acuminate, broadly cuneate at base, serrulate, glabrous, 4-7 in. long: fls. white, in dense racemes 1-1 1/2in. long: fr. ovoid, 3/4in. long. S. Japan. S.I.F. 1.29.—P. mira, Koehne. Allied to P. Persica. Tree, to 30 ft.: lvs. lanceolate, long-acuminate, rounded at base, crenulate-serrulate, villous beneath along the midrib, otherwise glabrous, 2-4in.long: fr. short- stalked, subglobose, 1 1/4 in. across, tomentose, edible; stone ovate, compressed, keeled, smooth. W. China. Differs from all peaches in its smooth stone. Hardy at Arnold Arboretum.—P. perulata, Koehne (subgen. Padus). Tree, to 40 ft. : lvs. elliptic to oblanceolate, acuminate, rounded or broadly cuneate at base, serrulate, sparingly pubescent beneath, 2 1/2-4 1/2in. long: racemes 2-3 in. long, velutin- ous, with a persistent involucre at base, leafless: fr. globose, 1/5in. across; calyx persistent. W. China.—P. pleiocerasus, Koehne. Allied to P. Maximowiczii. Tree, to 25 ft.: lvs. obovate-oblong. caudate-acuminate, rounded or cuneate at base, unequally serrate, glabrous or nearly so beneath, 1 /4-3 1/2in. long: fls. white, in 4-7- fld. racemes: fr. globose, dark red or black. W. China.—P. pleurop- tera, Koehne. Allied to P. lobulata. Tree, to 30 ft.: brauehlets hairy: lvs. obovate to rhombic-oblong, acuminate, usually cuneate at base, incisely doubly serrate, pubescent beneath on the veins, 3/4-2 1/3in. long: fr. usually solitary, subglobose, 1/2in. long, black; stone sulcate and foveolate. W. China.—P. polytricha, Koehne. Allied to P. Maximowiczii. Tree, to 30 ft.: branelilets villous: lvs. obovate to obovate-oblong, caudate, usually rounded at base, doubly serrate, pubescent on both sides, 1 1/2-3in. long: frs. 1-2 on a bracted peduncle 1/5-1/2in. long, ovoid, red. 1/3in. long; pedicels villous, about 1 in. long. Cent. China.—P. pubigera, Koehne (P.pubigera var. Potaninii, Koehne). Allied to P. Padus. Tree, to 60ft.: branchlets minutely velutinous: lvs. obovate-oblong, short- acuminate, subcordate or cordate at the base, minutely serrulate, glabrous and whitish beneath, 1 1/2-4 1/4in. long; petioles puberu-lous: racemes 3-6in. long: fr. about 1/4in. across. W. China. Var. Prattii, Koehne. Lvs. cuneate or rounded at base; petioles glabrous. Var. obovata, Koehne. Lvs. obovate, rounded at base; petioles glabrous.—P. rufomicans, Koehne (subgen. Padus). Tree, to 80 ft.: lvs. of flowering branehlets lanceolate to oblong-lanceo- late, about 2 in. long, of sterile branches usually obovate, 3—4 in. long, sharply serrulate, rufous-tomentose beneath: fruiting raceme 5 in. long, glabrous: fr. subglobosc, 2/5in. across. W. China.—P. sericea, Koehne (P. napaulensis var. sericea, Batal). Tree, to 80 ft. : lvs. elliptic to oblong, rounded or cuneate at base, remotely serrate, white-tomentose at first, later grayish tomentose. 3-5 in. long: racemes 4-5 in. long, densely short-pilose: fr. subglobose, 3/5in. long, black. W. China.—P. stellipila, Koehne (subgen. Padus). Tree, to 20 ft.: lvs. elliptic to narrow-oblong, long-acuminate, broadly cuneate or nearly rounded at base, sharply serrate, sparingly pubescent beneath, 2-4 in. long: racemes upright, 1 3/4-2in. long, without lvs. at the base: fr. globose, 1/5in. across. Cent. China.—P. tangutica, Koehne (Amygdalus communis var. tan- gutica. Batal). spiny shrub: lvs. fascicled, lanceolate, obtuse or acutish, crenulate-serrulate, 1-2 in. long: fls. sessile, about 1 in. across: fr. subglobose, 4/5in- across, somewhat compressed, rather dry; stone irregularly furrowed. N. W. China.—P. tatsienensis, Batal. Allied to P. Maximowicxii. Tree: lvs. ovate to obovate, acuminate, serrulate, 1 1/2-2 1/2in. long: fls. white, 3/4in. across in 3-7-fld. racemes with large leafy bracts. W. China. Var. stena- denia, Koehne. Tree, to 30 ft., quite glabrous: lvs. obovate-oblong, caudate, cuneate or rounded at base: fr. globose, dark red, 2/5in. across. W. China.—P. venoea, Koehne (subgen. Padus). Tree, to 35 ft.: lvs. oblong-obovate to obovate-oblanceolate, acuminate, cuneate or nearly rounded at base, sharply serrate, reticulate beneath, glabrous except the bearded axils, 2 1/2-4 1/2in. long: racemes without lvs. at base, 1 1/2-4 in. long: fr. globose, about 1/3in. across. Cent. China.—P. Wilsonii, Koehne (Padus Wilsonii, Schneid.). Tree, to 30 ft.: lvs. elliptic-oblong to obovate-oblong, acuminate, usually cuneate at base, remotely serrate, whitish pubescent beneath, 3 1/2-5 in. long: racemes pubescent, 5-6 in. long: fr. ovoid, 1/2in. long, black. Cent. China. Var. leiobotrys, Koehne. Lvs. closely serrulate, grayish beneath; racemes glabrous.—P. Zappeyana, Koehne=P. concinna. L. H. B.
}}
}}
==References==
<references/>
*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
<!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 -->
==Classification==
<!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 -->
<!--- xxxxx *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608 -->
**Subgenus ''Amygdalus'': [[almond]]s and [[peach]]es. Axillary buds in threes (vegetative bud central, two flower buds to sides). Flowers in early spring, sessile or nearly so, not on leafed shoots. Fruit with a groove along one side; stone deeply grooved. Type species ''Prunus dulcis'' (Almond).
The genus ''Prunus'' includes the [[almond]], [[apricot]], [[cherry]], [[peach]] and [[plum]], all of which have [[cultivar]]s developed for commercial [[fruit]] production. The edible part of the almond is the seed; the almond fruit is a drupe and not a "[[Nut (fruit)|nut]]". There are also a number of species, [[hybrid]]s, and [[cultivar]]s grown strictly as [[ornamental plant]]s, usually for their profusion of flowers, occasionally for leaves and bark. These ornamentals include the group that may be collectively called ''flowering cherries''.
*''Prunus brigantina'' - Briançon Apricot. Southeast France.
*''Prunus caroliniana'' - Carolina Cherry Laurel. Southeast U.S.
==External links==
*{{wplink}}
{{Commons|Prunus virginiana}}-->
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