Carphochaete bigelovii, Bigelow's Bristlehead
Scientific Name: Carphochaete bigelovii
Common Name: Bigelow's Bristlehead
Also Called: Bigelow Bush
Family: Asteraceae, Sunflower Family
Synonyms: ( )
Size: 4 feet or more.
Growth Form: Forb/herb, subshrub; bases woody, stems stiff, erect, reddish, pubescent.
Leaves: Green; dull, simple, opposite, fascicled on older growth; linear or narrow elliptical; margins entire.
Flower Color: White, purplish throats; discoid florets with only 3 to 4 per flowers per head; the corollas each have 5 pointed lobes, stamens exserted, numerous fine bristles surrounding the petal lobes; flowers terminal or in leaf axils, singular or paired, all with stiff bristles; phyllaries gland-dotted and sometimes puberulent; fruit is an achene.
Flowering Season: January to July; may bloom again in late winter.
Elevation: 2,500 to 7,000 feet.
Recorded Range: Bigelow's Bristlehead is relatively rare in the United States where it is found only in Arizona, New Mexico and Texas. It is also native to northwestern Mexico (Chihuahua, Coahuila, Sonora).
Habitat Preferences: Upland Sonoran desert habitats, chaparral and pinyon-juniper in rocky areas, rocky hillsides, rocky areas in grasslands, sandy soils, canyons.
North America & US County Distribution Map for Carphochaete bigelovii.
U.S. Weed Information: No data available.
Invasive/Noxious Weed Information: No data available.
Wetland Indicator: No data available.
Threatened/Endangered Information: No data available.
Recorded Range: Limited distribution in the United States. Found only in AZ, NM and TX; Southwest NM and southwest TX. Found also in northern and central Mexico. In the U.S. it is most prevalent in Arizona where it occurs in the central, eastern and southern parts of the state.
Genus Information: In North America there is 1 species and 1 accepted taxa overall for Carphochaete. World wide, The Plant List includes 6 accepted species names and includes a further 1 name of infraspecific rank for the genus.
In the Southwestern United States: Arizona, New Mexico and Texas each have 1 species of Carphochaete, California, Nevada and Utah have 0 species. All data is approximate and subject to taxonomic changes.
Comments: Bigelow’s Bristlehead is a monotypic species in the United States, unique to the southwest and Mexico.
The genus Carphochaete is derived from the Greek root word "carpho", straw, twig, dry stock and "Karphos" to wither, wrinkle, dry and from the Greek root word "chaite" or long bristle. A reference to its stiff bristles atop gland-dotted phyllaries.
The species epithet bigelovii is named in honor of Dr. John Milton Bigelow, (1804-1878), American physician and botanist, born in VT. Best known for his work on grasses and flowering plants of Ohio and for his work identifying and classifying plants of the southwestern United States.