Trichoptilium

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.

Trichoptilium
Conservation status
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:	Trichoptilium A. Gray
Species:	T. incisum
Binomial name
Trichoptilium incisum A.Gray

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]