Biology:Cycladenia
| Cycladenia | |
|---|---|
| |
| Cycladenia humilis var. jonesii | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Apocynaceae |
| Subfamily: | Apocynoideae |
| Tribe: | Odontadenieae |
| Genus: | Cycladenia Benth. |
| Species: | C. humilis
|
| Binomial name | |
| Cycladenia humilis Benth.
| |
Cycladenia humilis is the sole member of the monotypic genus Cycladenia. Known by the common name Sacramento waxydogbane, it is an uncommon plant native to the southwestern United States . Collections have mostly been from California , although the species has also been reported from Utah and Arizona, mostly on gypsum soils.[1][2][3] It is found at some elevation in several mountain ranges in the region. One of the four varieties of this plant, called the Jones waxydogbane, is considered a threatened taxon.[4] This is a fleshy perennial herb with dull green leaves and pinkish lavender flowers. The flowers begin as rolled tubes shaped like pea pods and then open into colorful funnel-shaped blooms.
Nomenclature
Cycladenia humilis Benth., Pl. Hartw. 323. 1849.[5]
Three varieties are recognized in addition to the autonymic var. humilis:
- Cycladenia humilis var. jonesii (Eastw.) S.L. Welsh & N.D. Atwood, Great Basin Naturalist 35(4): 333. 1976.[6] = Cycladenia jonesii Eastw., Leafl. W. Bot. 3(7): 159–160. 1942.[7]
- Cycladenia humilis var. tomentosa (A. Gray) A. Gray, Syn. Fl. N. Amer. 2(1): 400. 1886.[8] = Cycladenia tomentosa A. Gray, Bot. California 1: 474. 1876.[9]
- Cycladenia humilis var. venusta (Eastw.) Woodson ex Munz, Man. S. Calif. Bot. 379. 1935.[10] = Cycladenia venusta Eastw., Bull. Torrey Bot. Club 29(2): 77. 1902.[11]
References
- ↑ Kew World Checklist of Selected Plant Families
- ↑ Biota of North America Paogram 2013 county distribution map
- ↑ McLaughlin, S.P. 1993. Apocynaceae A.L. Juss, Dogbane Family. Journal of the Arizona-Nevada Academy of Science 27:164-168.
- ↑ USFWS. Rule to determine Cycladenia humilis var. jonesii (Jones Cycladenia) to be Thr. Species. Federal Register May 5, 1986.
- ↑ Bentham. G. Plantas Hartwegianas imprimis Mexicanas 323. 1849.
- ↑ S.L. Welsh & N.D. Atwood, Great Basin Naturalist 35(4): 333. 1976.
- ↑ Eastwood, A. 1942. Leaflets of Western Botany 3(7): 159–160.
- ↑ A. Gray. 1886. Synoptical Flora of North America 2(1): 400.
- ↑ A. Gray. 1876. Geological Survey of California, Botany 1: 474.
- ↑ Munz. P.A. 1935. Manual of Southern California Botany 379.
- ↑ Eastwood, A. 1902. Bulletin of the Torrey Botanical Club 29(2): 77.
External links
- USDA Plants Profile
- Jepson Manual Treatment
- Recovery Outline for the Jones Cycladenia (cycladenia humilis var. jonesii) Fish and Wildlife Service
- Photo gallery
Wikidata ☰ {{{from}}} entry
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