Calflora
Taxon  Report   5901    
Oenothera longissima  Rydb.
Long evening primrose,  Longstem evening primrose
Oenothera longissima, a dicot, is a perennial herb that is native to California, is also found outside of California, but is confined to western North America.
California Rare Plant Rank: 2B.2 (rare, threatened, or endangered in CA; common elsewhere).   CNDDB
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
(18 records)
one or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Family: ONAGRACEAE  
Genus: Oenothera

Wetlands: Occurs in wetlands

Communities: Creosote Bush Scrub, Pinyon-Juniper Woodland, wetland-riparian

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
JEF + PLANTS: Oenothera longissima ssp. clutei
PLANTS: Oenothera longissima ssp. typica
PLANTS: Oenothera longissima var. clutei
More information about  Oenothera longissima

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]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Sep 26, 2020).