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Taxon  Report  
Clarkia lewisii  P. H. Raven & D. R. Parn.
Lewis' clarkia
Clarkia lewisii is an annual herb that is native to California, and endemic (limited) to California.
California Rare Plant Rank: 4.3 (limited distribution).
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
~181 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Clarkia
Family: Onagraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Northern Coastal Scrub, Foothill Woodland, Chaparral
Name Status:
Accepted by JEF + CNPS + PLANTS

Information about  Clarkia lewisii from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora


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ID Tips on PlantID.net

Distinguishing Clarkia bottae and Clarkia lewisii: "Clarkia bottae and C. lewisii are indeed two distinct taxa. They are correctly treated as such in Jepson and thus also in Calflora. Confusion may arise because for a brief period one author considered these two taxa as conspecific (belonging to the same species). This was later debunked and Jepson mentions this with the comment 'misapplied' in the C. lewisii treatment. However, because of the period when when C. bottae and C. lewisii were considered conspecific, some records, specimens, and references may still be labelled as such. That is why the statement 'also called C. lewisii' is on Calflora's C. bottae taxon page here. The best way to distinguish these two in the field is by the orientation of the pedicel holding the flower bud (not the open flower)." Ron Vanderhoff (contributed by Cynthia Powell)

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/29/2024).