Calflora
Taxon  Report   8308    
Viola primulifolia  L.  ssp. occidentalis  (A. Gray) L.E. McKinney & R. J. Little
Western bog violet
Viola primulifolia ssp. occidentalis
© 2003 Norman Jensen
Photos from
CalPhotos / Calflora
Viola primulifolia ssp. occidentalis
© 2015 John Doyen
Viola primulifolia ssp. occidentalis
© 2008 Norman Jensen
Viola primulifolia ssp. occidentalis, a dicot, is a perennial herb (rhizomatous) that is native to California, Oregon.
also called Viola lanceolata ssp. occidentalis
CNPS Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Viola primulifolia ssp. occidentalis
© 2018 John Game
Family: VIOLACEAE  
Genus: Viola
Parent: Viola primulifolia
Communities: Freshwater Wetlands

Toxicity: MINOR (SEEDS)

Serpentine affinity: 5.1; (broad endemic)

Habitat: freshwater-marsh, bogs/fens

Name Status:
Accepted by JEF + CNPS

PLANTS accepted name:
Viola lanceolata ssp. occidentalis

Alternate Names:
ICPN + CNPS: Viola lanceolata ssp. occidentalis
More information about  Viola primulifolia ssp. occidentalis
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 (VILAO)

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: Nov 17, 2018).

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