CNPS

CNPS Rare Plant Inventory

Species Details

Viola primulifolia ssp. occidentalis

western white bog violet

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Photo of Viola primulifolia ssp. occidentalis
©2003 Norman Jensen

Classification

Scientific Name:
Viola primulifolia L. ssp. occidentalis (Gray) L.E. McKinney & R.J. Little
Common Name:
western white bog violet
Family: Violaceae
Element Code: PDVIO040Y2
USDA Plants Symbol:
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G5T2
State Rank:
 S2
Other Status: USFS_S
CRPR Changes:
Add Date: 1980-01-01
Date Edited: 2021-05-26

Ecology and Life History

Lifeform: perennial rhizomatous herb
Blooming Period: Apr-Sep
Elevation:
100 - 990 meters
330 - 3250 feet
General Habitat:
  • Bogs and fens (serpentinite)
  • Marshes and swamps
General Micro Habitat:
Micro Habitat:

Notes

Notes:
Threatened by mining, logging, road construction, and vehicles. Candidate for state listing in OR. See Botanical Gazette 11:255 (1886) for original description, and Phytologia 72(2):79 (1992) for revised nomenclature.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Total Occurrences: 19
Element Occurrence Ranks:
A B C D X U
1 11 0 0 0 7
Occurrence Status:
Historical >20 Years 6
Recent <=20 Years 13
Presence:
Presumed Extant 19
Possibly Extirpated 0
Presumed Extirpated 0

Location

California Endemic:
California Island:
States: Name (Code)
California (CA), Oregon (OR)
California Counties and Islands: Name (Code)
Del Norte (DNT)
Quads: Name (Quad Code)
Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Shelly Creek Ridge (4112387)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

Map

Presumed Extant
Print this Map
Counties   Quads

Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2022. Rare Plant Inventory (online edition, v9-01 1.5). Website https://www.rareplants.cnps.org [accessed 28 September 2022].