Taxon  Report   3963    
Grindelia hirsutula  Hook. & Arn.  var. hirsutula   
(no longer an active name)
Gumweed,  Hairy gumweed
Grindelia hirsutula var. hirsutula, a dicot, is a perennial herb that is native to California, is also found outside of California, but is confined to western North America.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial

Bloom Period
Genus: Grindelia
Parent: Grindelia hirsutula

Wetlands: Occurs usually in wetlands, occasionally in non wetlands

Ultramafic affinity: 1.4; (weak indicator / indifferent)

Communities: wetland-riparian

Name Status:
Accepted by PLANTS

ICPN other name:
Grindelia hirsutula

Alternate Names:
PLANTS: Grindelia hirsutula ssp. rubricaulis
PLANTS: Grindelia humilis
OTR: Grindelia hirsutula f. pedunculoides
. . .
NOTE: Grindelia hirsutula var. hirsutula is no longer an active name.
More information about  Grindelia hirsutula var. hirsutula
Nursery availability from CNPLX
This plant is available commercially.

BONAP Distribution Map

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Sep 20, 2020).