Taxon  Report   2994 
Epilobium densiflorum  (Lindl.) Hoch & P. H. Raven
Dense boisduvalia,  Dense flowered boisduvalia, Dense flowered spike primrose, Denseflower willowherb
Epilobium densiflorum
© 2009 Ron Wolf
More photos from
CalPhotos / Calflora
Epilobium densiflorum
© 2015 Neal Kramer
Epilobium densiflorum
© 2008 Keir Morse
Epilobium densiflorum, a dicot, is an annual herb that is native to California and is also found outside of California, but is confined to western North America.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Epilobium densiflorum
© 2013 Debra L. Cook
Genus: Epilobium
Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest, Foothill Woodland, Chaparral, Valley Grassland, (many plant communities)
Wetlands: Occurs usually in wetlands, occasionally in non wetlands
Distribution by County 

Add an Observation of  Epilobium densiflorum

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

PLANTS: Boisduvalia salicina
PLANTS: Oenothera densiflora
ICPN + PLANTS: Boisduvalia densiflora var. pallescens
ICPN + PLANTS: Boisduvalia densiflora var. salicina
ICPN + PLANTS: Boisduvalia densiflora
More information about  Epilobium densiflorum
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: Jun 19, 2018).

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