Senecio
Lifespan: | ⌛ | perennial, annual, biennial |
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Senecio > |
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Senecio (pronounced /sɨˈniːʃi.oʊ/)[1] is a genus of the daisy family (Asteraceae) that includes ragworts and groundsels. The flower heads are normally rayed, completely yellow, and the heads are borne in branched clusters. Senecio is one of the largest genera of flowering plants, and despite the separation of many species into other genera it still contains over 1000 species of varied form, including leaf, stem and tuber succulents, annuals, perennials, aquatics, climbers, shrubs and small trees. Some species produce natural biocides (especially alkaloids) to deter or even kill animals that would eat them.
Senecio species are used as food plants by the larvae of some Lepidoptera species — see list of Lepidoptera that feed on Senecio.
ExpandRead about Senecio in the Standard Cyclopedia of Horticulture
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Cultivation
Propagation
Pests and diseases
Species
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Selected species:
- Main article: List of Senecio species
- Senecio ampullaceus — Texas ragwort, Texas squaw-weed, Texas groundsel, clasping-leaf groundsel[2]
- Senecio angulatus L.f. — Creeping groundsel
- Senecio antisanae
- Senecio arborescens
- Senecio aureus L. — Golden Ragwort[3]
- Packera aurea (L.) A. & D. Löve
- Senecio articulatus
- Senecio barbertonicus Klatt — Succulent Bush Senecio
- Senecio battiscombei
- Dendrosenecio battiscombei
- Senecio brasiliensis (Spreng.) Less. — flor-das-almas
- Cineraria brasiliensis
- Senecio cambrensis — Welsh groundsel, Welsh ragwort
- Senecio cineraria — Dusty miller
- Cineraria maritima
- Jacobaea maritima
- Othonna maritima
- Senecio congestus (R. Br.) DC. — Marsh ragwort, Clustered marsh ragwort, Marsh fleabane
- Cineraria palustris
- Othonna palustris
- Tephroseris palustris
- Senecio eboracensis Abbott & Lowe — York groundsel
- Senecio flaccidus Less. — Douglas senecio, threadleaf groundsel, threadleaf ragwort
- Senecio gallicus Chaix — Southern Ragwort
- Senecio glabellus Poir. — Butterweed
- Packera glabella (Poir) C. Jeffrey
- Senecio glaucus L. — Jaffa groundsel
- Senecio gregorii
- Senecio haworthii — woolly senecio
- Senecio iscoensis — Hieron.
- Senecio jacobaea — common ragwort, stinking willie, tansy ragwort;[4][5]
- synonymous with Jacobaea vulgaris
- Senecio keniensis
- Dendrosenecio keniensis
- Senecio keniodendron — Giant groundsel
- Dendrosenecio keniodendron
- Senecio keniophytum
- Senecio kleinia
- Kleinia neriifolia
- Senecio lamarckianus
- Senecio leucanthemifolius Poir. — Coastal Ragwort
- Senecio littoralis
- Senecio macroglossus
- Senecio mikanioides — Cape Ivy, German Ivy
- Delairea odorata
- Senecio obovatus Muhl. — Roundleaf Ragwort
- Packera obovata (Muhl. ex Willd.)
- Senecio patagonicus
- Senecio pulcher
- Senecio rowleyanus — String of pearls
- Senecio sanmarcosensis
- Senecio serpens
- Senecio smithii
- Senecio squalidus — Oxford ragwort
- Senecio vaginatus
- Senecio vernalis — Eastern groundsel
- Senecio vira-vira
- Senecio viscosus — sticky ragwort
- Senecio vulgaris — common groundsel, old-man-in-the-spring
Formerly in Senecio
- Brachyglottis greyi (as S. greyi)
- Florist's Cineraria, Pericallis × hybrida (as S. cruentus)
- Rugelia nudicaulis — Rugels ragwort
Synonyms
The following genera contain species that are or have been included within Senecio.[6]
Probable synonyms:
- Antillanthus B. Nord.
- Barkleyanthus H. Rob. & Brettell
- Brachyglottis J. R. Forst. & G. Forst.[7]
- Canariothamnus B. Nord.
- Dauresia B. Nord. & Pelser
- Dendrophorbium C. Jeffrey
- Dendrosenecio (Hauman ex Hedberg) B. Nord. - Giant groundsels
- Dorobaea Cass.
- Dresslerothamnus H. Rob.
- Elekmania B. Nord.
- Herreranthus B. Nord.
- Hubertia Bory
- Iocenes B. Nord.
- Jacobaea Mill.
- Lasiocephalus Willd. ex Schltdl.
- Leonis B. Nord.
- Lundinia B. Nord.
- Mesogramma DC.
- Monticalia C. Jeffrey
- Nelsonianthus H. Rob. & Brettell
- Nesampelos B. Nord., nom. inval.
- Oldfeltia B. Nord. & Lundin
- Packera Á. Löve & D. Löve
- Pentacalia Cass.
- Pippenalia McVaugh
- Pittocaulon H. Rob. & Brettell
- Pojarkovia Askerova
- Psacaliopsis H. Rob. & Brettell
- Pseudogynoxys (Greenm.) Cabrera
- Pseudojacobaea (Hook. f.) R. Mathur
- Roldana La Llave
- Sinosenecio B. Nord.
- Synotis (C. B. Clarke) C. Jeffrey & Y. L. Chen
- Telanthophora H. Rob. & Brettell
- Tephroseris (Rchb.) Rchb.
- Zemisia B. Nord.[8]
Gallery
References
- ↑ Sunset Western Garden Book, 1995:606–607
- ↑ http://kyledailyphoto.blogspot.com/2007_04_01_archive.html#1746781956987590057
- ↑ http://www.ct-botanical-society.org/galleries/packeraaure.html
- ↑ http://www.botanical.com/botanical/mgmh/r/ragwor02.html
- ↑ http://www.nwcb.wa.gov/weed_info/Senecio_jacobaea.html
- ↑ http://www.ingentaconnect.com/content/iapt/tax/2007/00000056/00000004/art00009
- ↑ http://www.nzjf.org/free_issues/NZJF31_3_1986/8B94A164-BF7A-4A5B-A45B-3ACE982D0C7C.pdf
- ↑ http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?11063
- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963
External links
- w:Senecio. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
- Senecio QR Code (Size 50, 100, 200, 500)