Erigeron divergens, Spreading Fleabane
Scientific Name: Erigeron divergens
Common Name: Spreading Fleabane
Also Called: Branching Fleabane, Desert Fleabane, Fleabane Daisy, and Spreading Daisy
Family: Asteraceae, Sunflower Family
Synonyms: (Erigeron divaricatus, Erigeron accedens, Erigeron incomptus, Erigeron solisaltator)
Duration: Annual or biennial, taproot.
Size: 18 inches or more, 1 or 2 feet wide.
Growth Form: Forb/herb; variable, erect or spreading, stems single or multiple, variable pubescence.
Leaves: Grayish-green, hairy and variable, margins entire, pinnatifid or slighted toothed; basal leaves larger, ovate, deciduous, becoming gradually shorter and linear, sessile, along length of stem.
Flower Color: White and yellow, showy, daisy-like heads on tips of branches, numerous ray florets quite attractive (75 to 150); pinkish white, purple or lavender; rays narrow, disk flowers dense, bright yellow.
Flowering Season: February to October, bloom season variable across wide range.
Elevation: 1,000 to 9,000 feet in Arizona, likely at higher elevations elsewhere.
Habitat Preferences: Multiple habitat types, lower and upper deserts, grasslands, pinyon-juniper and pine forests, dry or moist, rocky slopes, mesas, washes, gravel or sandy soil, disturbed areas.
Recorded Range: Western United States, British Columbia and Alberta. More prevalent in southwestern states. Also found in northern Baja California and Mexico. Throughout Arizona.
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.
Comments: Spreading Fleabane is one of the more common members of genus Erigeron in central Arizona in habitat preferences stated above. This species is highly variable in appearance throughout its range and may be misidentified easily. It can readily spread over large open areas in years with abundant rainfall.
Spreading Fleabane has historically been used as a snuff for headaches, in several ways in ceremonies, as eyewash, for snakebites and as an omen of fortune. See species account from Native American Ethnobotany, University of Michigan, Dearborn.