Trichoptilium
| Trichoptilium | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Helenieae |
| Subtribe: | Psathyrotinae |
| Genus: | Trichoptilium 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
[edit]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
[edit]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
[edit]- ^ 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
[edit]
Media related to Trichoptilium at Wikimedia Commons- Jepson Manual Treatment - Trichoptilium incisum
- Trichoptilium incisum - Photo gallery
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