''Trichoptilium'' is a monotypic genus containing the single species ''Trichoptilium incisum'', which is known by the common names yellowdome
and yellowhead. This is a plant in the
daisy family which is native to the
Mojave and
Sonoran Desert
The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States (in Arizona ...
s of the United States and Mexico.
Description
''Trichoptilium incisum'' sends up stems from a basal rosette of sharply-toothed leaves which are covered in curly hairs and oil glands. Atop each stem is a small rounded bright yellow
flower head
A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...
with only disc florets. Each head is a hemispherical button about a centimeter in diameter. The fruit is bristly with
pappus.
References
External links
*
Jepson Manual Treatment - ''Trichoptilium incisum''''Trichoptilium incisum'' - Photo gallery
Helenieae
Monotypic Asteraceae genera
Flora of the California desert regions
Flora of Nevada
Flora of Arizona
Flora of the Sonoran Deserts
Natural history of the Mojave Desert
Taxa named by Asa Gray
{{Helenieae-stub