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Enceliopsis nudicaulis is a North American species of flowering plants in the family Asteraceae known by the common name nakedstem sunray, or naked-stemmed daisy.[2]
| Enceliopsis nudicaulis | |
|---|---|
 | |
| Enceliopsis nudicaulis var. corrugata | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Enceliopsis |
| Species: | E. nudicaulis |
| Binomial name | |
| Enceliopsis nudicaulis | |
| Synonyms[1] | |
| |
Description
E. nudicaulis is a perennial herb growing up to 45 centimeters (18 inches) tall from a woody caudex fringed with gray-green hairy leaves.[3] The leaves are oval and up to 6.5 cm (2+1⁄2 in) long and wide.[4][3]
Blooming from May to August,[3] the inflorescence is a solitary flower head atop a tall, erect peduncle. The flower head is 7.5–10 cm (3–4 in);[3] it has a base made up of three layers of densely woolly, pointed phyllaries. It has a fringe of approximately 21 yellow ray florets each 2 to 4 cm (3⁄4 to 1+1⁄2 in) long. The fruit is a hairy achene about 1 cm in length.[4]
Varieties
There are two recognized varieties of this species:[4]
- Enceliopsis nudicaulis var. corrugata, the Ash Meadows sunray – the rarer variety, which is probably endemic to Nevada in the vicinity of Ash Meadows in the Amargosa Desert; it is federally listed as threatened.[5]
- Enceliopsis nudicaulis var. nudicaulis – found in most of species range[6]
Distribution and habitat
Enceliopsis nudicaulis is native to the western United States: Idaho, Colorado, Utah, Nevada, Arizona, and California including the Inyo Mountains–White Mountains and sky islands the Mojave Desert in California.[7] It grows in desert, plateau, and montane habitats.[2]
Uses
It is sometimes used as an ornamental plant in dry areas.[3]
References
- The Plant List, Enceliopsis nudicaulis (A. Gray) A. Nelson
- Calflora taxon report, University of California, Enceliopsis nudicaulis (A. Gray) Nelson, naked stemmed daisy, nakedstem sunray
- Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 370. ISBN 978-0-375-40233-3.
- Flora of North America, Naked-stemmed daisy, Enceliopsis nudicaulis (A. Gray) A. Nelson
- "Nevada Natural Heritage Program Rare Plants Fact Sheet" (PDF). Archived from the original (PDF) on 2004-07-31. Retrieved 2022-07-13.
- Jepson Manual: var. nudicaulis
- Biota of North America PRogram 2014 county distribution map
External links
- Calflora Database: Enceliopsis nudicaulis (Naked stemmed daisy, Nakedstem sunray)
- Jepson Manual Treatment — Enceliopsis nudicaulis
- United States Department of Agriculture Plants Profile: Enceliopsis nudicaulis
- UC Calphotos gallery of Enceliopsis nudicaulis
Media related to Enceliopsis nudicaulis at Wikimedia Commons
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