Dudleya cymosa is a species complex of evergreen and deciduous succulent plants in the family Crassulaceae known by the common name: canyon liveforever.[1][2] It is a loosely defined polyphyletic[3] species with a diverse number of subspecies, varying highly in morphology, distribution, and habitat.[4]
| Dudleya cymosa | |
|---|---|
| |
| The neotype for D. cymosa, an illustration by John Gilbert Baker | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Saxifragales |
| Family: | Crassulaceae |
| Genus: | Dudleya |
| Species: | D. cymosa
|
| Binomial name | |
| Dudleya cymosa | |
| Synonyms | |
|
Echeveria cymosa | |
Description
editIt is a distinctive plant sending up erect red-orange stems from a gray-green basal rosette. The small yellowish-red thimble-shaped flowers top the stems in a cyme inflorescence. Some subspecies are considered threatened locally.
Subspecies
editRecognized[5] Dudleya cymosa subspecies:
- Dudleya cymosa subsp. agourensis K.M. Nakai - (Agoura Hills dudleya)
- Dudleya cymosa subsp. crebrifolia K.M. Nakai & Verity - (San Gabriel River dudleya)
- Dudleya cymosa subsp. costatifolia Bartel & Shevock - (Pierpoint springs dudleya)
- Dudleya cymosa subsp. cymosa (Lem.) Britton & Rose - (canyon liveforever)
- Dudleya cymosa subsp. marcescens Moran - (Marcescent dudleya)
- Dudleya cymosa. subsp. ovatifolia - (Santa Monica Mountains dudleya)
- Dudleya cymosa subsp. paniculata (Jeps.) K.M. Nakai - (Diablo range dudleya)
- Dudleya cymosa subsp. pumila (Rose) K.M. Nakai - (Transverse ranges liveforever)
The subspecies marcescens[6] and ovatifolia[7] are federally listed as threatened species of the United States.
Butterfly habitat
editDudleya cymosa is the larval host plant for the Sonoran blue butterfly, Philotes sonorensis (Lycaenidae)
Notes
edit- ^ New N. Amer. Crassul. 21. 1903 Sep
- ^ Bull. New York Bot. Gard. 3:21. 1903 Nov
- ^ Yost, J. M.; Bontrager, M.; McCabe, S. W.; Burton, D.; Simpson, M. G.; Kay, K. M.; Ritter, M. (2013). "Phylogenetic relationships and evolution in Dudleya (Crassulaceae)" (PDF). Systematic Botany. 38 (4): 1096–1104. doi:10.1600/036364413X674760. S2CID 15715233.
- ^ McCabe, Stephen Ward (26 September 2019). "Succulent Poaching, Conservation,and the Mainland Dudleyas". Youtube. CNPS Santa Clara Valley Chapter. Archived from the original on 2021-12-21.
- ^ "Dudleya cymosa". Global Biodiversity Information Facility.
- ^ USFWS. ssp. marcescens. Species Profile.
- ^ USFWS. ssp. ovatifolia. Species Profile.
References
edit- Thomson, Paul H. (1993). Dudleya and Hasseanthus handbook. Bonsall, CA: Bonsall Publication. ISBN 978-0-9602066-5-0.
- C.Michael Hogan, ed. 2010. Dudleya cymosa. Encyclopedia of Life.
External links
edit
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