Calflora
Taxon  Report   2994    
Epilobium densiflorum  (Lindl.) Hoch & P. H. Raven
Dense boisduvalia,  Dense flowered boisduvalia, Dense flowered spike primrose, Denseflower willowherb
Epilobium densiflorum
© 2013 Debra L. Cook
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, is also found outside of California, but is confined to western North America.

Interactive Distribution Map


Observation Hotline
(observation details)



point, line, or polygon

Plant Characteristics
and Associations



Bloom Period
Epilobium densiflorum
© 2009 Ron Wolf
Family: ONAGRACEAE  
Genus: Epilobium
Communities: 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

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Boisduvalia salicina
PLANTS: Oenothera densiflora
ICPN + PLANTS: Boisduvalia densiflora var. pallescens
. . .
More information about  Epilobium densiflorum
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (EPDE4)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

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: https://www.calflora.org/   (Accessed: Dec 18, 2018).