Isocoma acradenia, Alkali Goldenbush
Scientific Name: Isocoma acradenia
Common Name: Alkali Goldenbush
Also called: Alkali Jimmyweed
Family: Asteraceae, Sunflower Family
Synonyms: (Haplopappus acradenius, Aplopappus acradenius)
Size: Up to 4 feet
Growth Form: Subshrub or shrub; rounded, bushy, erect branching stems; usually hairless, whitish, shiny, older stems becomes yellowish-tan.
Leaves: Green to light gray-green; older leaves become light gray or tan; alternate, simple, up to 2 inches or more, narrowly linear or obovate, margins either entire or toothed, glandular.
Flower Color: Yellow; clusters of 4 or 5 flower heads; disk flowers only, 6 to 17; fruit is an achene.
Flowering Season: June to October.
Elevation: Up to 4,000 feet.
Habitat Preferences: Various habitats, lower and upper deserts, Creosote Bush communities, saline or alkaline areas, sandy, gravelly areas.
Recorded Range: In the United States Isocoma acradenia is found only in AZ, CA, NV and UT. It is found also in northern Mexico. Occurs throughout much of Arizona.
U.S. Weed Information: No data available.
Invasive/Noxious Weed Information: No data available.
Wetland Indicator: Isocoma acradenia is on the USDA 2012 National Wetland Plant List.
Threatened/Endangered Information: No data available.
Comments: Alkali Goldenbush, a Mojave Desert species, is common throughout its Arizona. It is one of several yellow fall blooming subshrubs in the state. Formerly included in the large genus Haplopappus, Alkali Goldenbush was moved to Isocoma with several other species.
Alkali Goldenbush and other species of Isocoma attract insects and butterflies.It is similar in appearance to the closely related Burroweed, Isocoma tenuisecta which has deeply or pinnately divided leaves. In Southwest Desert Flora, also see Southern Goldenbush, Isocoma pluriflora and Rusby's Goldenbush, Isocoma rusbyi.