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Taxon  Report  
Hosackia oblongifolia  Benth.  var. cuprea  (Greene) Brouillet
Copper-flowered bird's-foot trefoil
Hosackia oblongifolia var. cuprea is a perennial herb that is native to California, and endemic (limited) to California.
also called Lotus oblongifolius var. cupreus
California Rare Plant Rank: 1B.3 (rare, threatened, or endangered in CA and elsewhere).
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
Observation Search
(58 records)
yellowone or more occurrences
within a 7.5-minute quadrangle
bloom graphic
Bloom Period
Parent: Hosackia oblongifolia
Genus: Hosackia
Family: Fabaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands: Occurs in wetlands

Habitat: meadows, edges

Communities: Red Fir Forest, Lodgepole Forest, wetland-riparian

Name Status:
Accepted by JEF + CNPS
Alternate Names:
JEFHosackia cuprea
JEF + CNPSLotus cupreus
JEF + CNPSLotus oblongifolius var. cupreus
Information about  Hosackia oblongifolia var. cuprea from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

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Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 06/07/2023).