Taxon  Report   5901 
Oenothera longissima  Rydb.
Long evening primrose,  Longstem evening primrose
Oenothera longissima
© 2011 Ron Wolf
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Oenothera longissima, a dicot, is a perennial herb that is native to California and is also found outside of California, but is confined to western North America.
It is included in the CNPS Inventory of Rare and Endangered Plants on list 2B.2 (rare, threatened, or endangered in CA; common elsewhere).   7th Edition  /  8th Edition

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Plant Characteristics
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Oenothera longissima
© 2011 Ron Wolf
Genus: Oenothera
Creosote Bush Scrub, Pinyon-Juniper Woodland, wetland-riparian
Wetlands:Usually occurs in wetlands, but occasionally found in non wetlands [U.S. Fish & Wildlife Service.]
Distribution by County 

Add an Observation of  Oenothera longissima

Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Oenothera longissima ssp. typica
PLANTS: Oenothera longissima var. clutei
TJM2 + PLANTS: Oenothera longissima ssp. clutei
More information about  Oenothera longissima
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 23, 2016).

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