Isocoma pluriflora, Southern Goldenbush
Scientific Name: Isocoma pluriflora
Common Name: Southern Goldenbush
Also called: Jimmyweed, Southern Jimmyweed, Rayless Goldenrod
Family: Asteraceae, Sunflower Family
Synonyms: (Haplopappus heterophyllus, Haplopappus pluriflorus, Isocoma wrightii)
Size: Up to 3 ½ feet.
Growth Form: Forb/herb, subshrub; erect, several vertical stems; older plants woody; mostly glabrous; in coldest areas stems die back to crown.
Leaves: Light green, dull-green; leaves alternate, narrowly linear or elliptical, margins mostly entire, some toothed.
Flower Color: Yellow; disk flowers only, 8 or more florets, small heads in cluster of 25 or more on end of stems, fruit is an achene.
Flowering Season: June to October.
Elevation: Up to 5,000 feet.
Habitat Preferences: Mesas and plains with saline, sandy, clay or alkaline soils, common along roadsides in preferred habitats.
Recorded Range: In the United States, this species is limited in distribution to the southwestern states of AZ, CO, NM and TX. It is also found in northern Mexico. It occurs throughout much of Arizona.
North America & US County Distribution Map for Isocoma pluriflora.
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: Southern Goldenbush is another of the fall blooming yellow daisies that were formerly included in the genus Haplopappus. It is another indicator species of over grazed rangeland. Ranchers attempt to control and limit dense stands of this and other similar species because its presence reduces more desirable browse species. Southern Burroweed is similar in appearance to Burroweed, Isocoma tenuisecta and may superficially resemble several species of Rabbitbrush and Goldenweed. This species is believed to cause "trembles" in livestock and "milk sickness" in humans.
Several herbal uses that have been described for this species and include use of the plant as a lotion to heal an infant's navel, a poultice of the plant was applied for muscular pain and chewing of the leaves to reduce coughing. See species account from Native American Ethnobotany, University of Michigan, Dearborn.