Brickellia coulteri, Coulter's Brickellbush
Scientific Name: Brickellia coulteri
Common Name: Coulter's Brickellbush
Also Called: Coulter Brickellbush
Family: Asteraceae, Sunflower Family
Synonyms: (Coleosanthus coulteri)
Size: 1 to 3 feet or more.
Growth Form: Shrub, subshrub; stems much branched from base; branches opposite, ascending or spreading; pubescent with yellow hairs, often gland-dotted, somewhat sticky.
Leaves: Green; opposite, simple; ovate to deltate; short petioles; margins with 1 to 3 sets of sharp teeth, usually near the base; leaf blades with 3-distinct nerve channels from the bases.
Flower Color: Light yellowish/green, sometimes purple or brown tinged; heads in loose panicles; flowering stalks or peduncles pubescent and sometimes gland-dotted; phyllaries greenish and often purple-tinged, 4-5 striations and unequal, lance-ovate to lanceolate, smooth or sparsely pubescent; disk florets 13 to 25; floral heads on tips of much branched inflorescence; fruit is a yellow-brown to yellow-gray achene with a pappus of 28 to 40 smooth to barbellulate bristles.
Flowering Season: March to November and again from September to May if winter rainfall is sufficient.
Elevation: 2,000 to 4,000 feet.
Habitat Preferences: Arid rocky slopes, hillsides, canyons.
Recorded Range: A strictly southwestern species that is found mostly in AZ, NM, TX as well as northern Mexico and Baja California. Brickellia coulteri is found primarily in Arizona and also in the southwest part of New Mexico and extreme west Texas.
North America & US County Distribution Map for Brickellia coulteri.
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.
Genus Information: In North America there are 36 species and 36 accepted taxa overall for Brickellia. World wide, The Plant List includes 112 accepted species names and includes a further 136 of infraspecific rank for the genus.
In the Southwestern United States: Arizona has 22 species of Brickellia, California has 13 species, Nevada has 12 species, New Mexico has 19 species, Texas has 16 species, Utah has 7 species. All data is approximate and subject to taxonomic changes.
Comments: Coulter’s Brickellia is a fragrant shrub and may be identified in part by its distinctive bracts or linear phyllaries tinged brownish, pink or purple. With 22 species of Brickellia in Arizona, it is often difficult to determine to identify exactly which species you’re working with. As with many similar species the main differences here are the details of the flowers which vary greatly. Brickellia coulteri is common in our state and can be identified more readily than others.
The specific epithet coulteri is named to honor Dr. Thomas Coulter (1793-1843), an Irish physician, botanist and explorer. Dr. Coulter was one of the first botanists to collect plants and conduct botanical research in Arizona. He is well known for his travels and botanical research in Mexico and he was a member of the Royal Irish Academy, and a fellow of Trinity College, Dublin, where he founded the college's herbarium.