Calflora
Taxon  Report   3018    
Epilobium siskiyouense  (Munz) Hoch & P. H. Raven
Siskiyou fireweed,   Siskiyou willowherb
Epilobium siskiyouense, a dicot, is a perennial herb that is native to California, and also found in Oregon.
California Rare Plant Rank: 1B.3 (rare, threatened, or endangered in CA and elsewhere).   CNDDB
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
(86 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Family: Onagraceae  
Genus: Epilobium

Wetlands: Occurs usually in wetlands, occasionally in non wetlands

Ultramafic affinity: 5.5 - strict endemic

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

Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
JEF + PLANTSEpilobium obcordatum ssp. siskiyouense
JEF + PLANTSEpilobium obcordatum var. laxum
More information about  Epilobium siskiyouense

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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/25/2022).