Trichoptilium
| Trichoptilium | |
|---|---|
Apparently Secure (NatureServe) | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Helenieae |
| Subtribe: | Psathyrotinae |
| Genus: | A. Gray |
| Species: | T. incisum
|
| Binomial name | |
| Trichoptilium incisum | |
Trichoptilium is a monotypic genus in the daisy family containing the single species Trichoptilium incisum, which is known by the common names yellowdome[1] and yellowhead.
Description
Trichoptilium incisum grows up to 20 centimetres (8 in) tall.[2] It sends up stems from a basal rosette of sharply toothed leaves which are up to 5 cm (2 in) long[2] and covered in curly hairs and oil glands. Atop each stem is a rounded bright yellow flower head about 1.5 cm (1⁄2 in) wide[2] with only disc florets. Each head is a hemispherical button about 1 cm in diameter. The fruit is bristly with pappus.
Distribution and habitat
The plant is native to the Mojave and Sonoran Desert regions of the United States and Mexico.
It appears in late winter, and depending on rain, sometimes in autumn.[2]
References
- ^ NRCS. "Trichoptilium incisum". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 14 December 2015.
- ^ a b c d Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 404. ISBN 978-0-375-40233-3.
External links
- Media related to Trichoptilium at Wikimedia Commons
- Jepson Manual Treatment - Trichoptilium incisum
- Trichoptilium incisum - Photo gallery