Encelia virginensis, Virgin River Brittlebush
Scientific Name: Encelia virginensis
Common Name: Virgin River Brittlebush
Family: Asteraceae, Sunflower Family
Synonyms: (Encelia frutescens var. virginensis, Encelia virginensis var. virginensis)
Size: Up to 4 feet or more.
Growth Form: Shrub or subshrub; slender branches from base; stems are proximally branched; new stems with pubescence, older stems with fissured bark.
Leaves: Green, gray-green; scattered along slender stem; leaves sparsely strigose and with soft canescence; leaves narrowly ovate to deltate.
Flower Color: Yellow; flower heads solitary; radiate, ray flowers 11 to 21; flower stems (peduncles) canescent; phyllaries narrowly ovate; fruit is an achene.
Flowering Season: January to September in Arizona; March or April to June and again in December in California.
Elevation: Up to 4,000 feet in Arizona; 1,500 to 4,500 feet in California.
Habitat Preferences: Desert flats, rocky slopes, mesas and roadsides.
Recorded Range: In the United States Virgin River Brittlebush is found in AZ, CA, NM, NV, TX, UT. In Arizona it occurs in the northwestern, central and south, southeastern parts of the state. It is also found in southern Baja California.
North America & US County Distribution Map for Encelia virginensis.
U.S. Weed Information: No information available.
Invasive/Noxious Weed Information: No information available.
Wetland Indicator: No information available.
Threatened/Endangered Information: No information available.
In the southwestern United States: Arizona, Nevada and Utah each have 4 species of Encelia, California has 5 species, New Mexico has 2 species and Texas has 1 species. All data is approximate and subject to taxonomic changes.
Comments: Encelia virginensis is very similar to both Brittlebush, Encelia farinosa and Button Brittlebush, Encelia frutescens.
In Southwest Desert Flora also see similar species: Brittlebush, Encelia farinosa, Button Brittlebush, Encelia frutescens, Hairy Desertsunflower, Geraea canescens and Parish's Goldeneye, Bahiopsis parishii.