Taxon  Report   3018 
Epilobium siskiyouense  (Munz) Hoch & P. H. Raven
Siskiyou fireweed,  Siskiyou willowherb
Epilobium siskiyouense
© 2008 Norman Jensen
More photos from
CalPhotos / Calflora
Epilobium siskiyouense
© 2008 Aaron Schusteff
Epilobium siskiyouense
© 2014 Neal Kramer
Epilobium siskiyouense, a dicot, is a perennial herb that is native to California, Oregon.
CNPS Rare Plant Rank: 1B.3 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Epilobium siskiyouense
© 2003 Norman Jensen
Genus: Epilobium
Lodgepole Forest, Subalpine Forest, Red Fir Forest, wetland-riparian
Wetlands: Occurs usually in wetlands, occasionally in non wetlands
AFFINITY to serpentine soil:   5.5 (strict endemic)   [Safford et al 2005]
Distribution by County 

Add an Observation of  Epilobium siskiyouense

Name Status:
Accepted by JEF + CNPS + PLANTS + JM93
Alternate Names:
(according to)

ICPN + PLANTS: Epilobium obcordatum ssp. siskiyouense
ICPN + PLANTS: Epilobium obcordatum var. laxum
More information about  Epilobium siskiyouense
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Aug 21, 2018).

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