Carnegiea gigantea, Giant Saguaro

Southwest Desert Flora

Home to the plants of the Sonoran, Chihuahuan and Mojave Deserts

Cirsium ochrocentrum, Yellowspine Thistle

Isocoma acradenia, Alkali Goldenbush

Isocoma acradenia, Alkali Goldenbush, Southwest Desert Flora Isocoma acradenia, Alkali Goldenbush, Southwest Desert Flora Isocoma acradenia, Alkali Goldenbush, Southwest Desert Flora    Isocoma acradenia, Alkali Goldenbush, Southwest Desert Flora Isocoma acradenia, Alkali Goldenbush, Southwest Desert Flora    Isocoma acradenia, Alkali Goldenbush, Southwest Desert Flora


Scientific Name: Isocoma acradenia
Common Name: Alkali Goldenbush
Also called: Alkali Jimmyweed
Family: Asteraceae, Sunflower Family
Synonyms: (Haplopappus acradenius, Aplopappus acradenius)
Status: Native
Duration: Perennial
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.

North America & US County Distribution Map for Isocoma acradenia.

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.

Genus Information: 11 species in Isocoma, all in southwestern United States. 5 species native to Arizona. 3 varieties in Isocoma acradenia: Isocoma acradenia var. acradenia, Alkali Goldenbush; Isocoma acradenia var. bracteosa, Alkali Goldenbush; and Isocoma acradenia var. eremophila also called Alkali Goldenbush.

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.
Date Profile Completed: 8/4/2012; Updated, 07/26/2015
References:
U.S. Dept. of Agriculture, Natural Resources Conservation Service on-line database
Arizona Flora, Kearney, Thomas H., Peebles, Robert H., 1960, University of California Press, Berkley and Los Angeles, as Aplopappus acradenius.
The Jepson Manual, Citation: http://ucjeps.berkeley.edu/interchange/I_treat_indexes.html Sat Aug 4 13:15:43 2012
Guy L. Nesom, FNA | Family List | FNA Vol. 20 | Asteraceae Isocoma, Flora of North America Editorial Committee, eds. 1993+. Flora of North America North of Mexico. 16+ vols. New York and Oxford. (accessed 8/4/2012)
SEINet for synonyms, scientific names and recorded geographic locations, http://swbiodiversity.org/seinet/