Taxon  Report   3015 
Epilobium rigidum  Hausskn.
Siskiyou Mtns. willowherb, stiff willowherb
Epilobium rigidum, a dicot, is a perennial herb that is native to California and to Oregon.

It is included in the CNPS Inventory of Rare and Endangered Plants on list 4.3 (limited distribution).   7th Edition  /  8th Edition

 

 Interactive Distribution Map 


 Observation Hotline 
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 Distribution by County 


© 2005 Jennifer L. Kalt

© 2003 Norman Jensen
 Plant Characteristics
 and Associations



Bloom Period
Community: Yellow Pine Forest
AFFINITY to serpentine soil:   5.1 (broad endemic)   [Safford et al 2005]
Family: ONAGRACEAE  
Genus: Epilobium
Add an Observation of Epilobium rigidum
Name Status:
Accepted by TJM2 + PLANTS + JM93
Other Names:
(according to)

PLANTS: Epilobium rigidum var. canescens
 Information about  Epilobium rigidum  from other sources:
Photos on Picasa / Flickr / Google Images

website references on Google

USDA PLANTS Profile (EPRI)

Nursery availability and horticultural info on CNPLX

2012 Jepson Manual Treament from the Jepson Herbarium,
University of California, Berkeley

Records from the Consortium of California Herbaria

Original Publication citation. on the International Plants Names Index

Search efloras.org (Flora of North America)

Search the Lady Bird Johnson Wildflower Center Native Plant Database

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 Calif. Herbaria.
[web application]. 2014. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Apr 24, 2014).

The information on this page comes from diverse sources. None of the links are sponsored.

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