E-Flora BC: Electronic Atlas of the Flora of British Columbia

Viola nephrophylla var. cognata Greene (Greene) C.L. Hitchc.
northern bog violet
Violaceae (Violet family)

Introduction to Vascular Plants
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Distribution of Viola nephrophylla var. cognata
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Species Information

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General:
Perennial from a thickened rhizome, without stolons, plants up to 25 cm tall; stems lacking.
Leaves:
Basal leaves heart-shaped to triangular, toothed, smooth or nearly so, the blades 3.5-7 cm long, 3-5 cm wide, the stalks 5-25 cm long; stem leaves lacking; stipules linear-lanceolate, entire.
Flowers:
Inflorescence of single, axillary flowers; petals 5, bluish-violet, the lower petal 10-20 mm long including the 2- to 3-mm long pouched spur, the lower 3 bearded and more or less whitish at the base, the lateral pair sometimes not bearded; sepals 5, lanceolate; style heads smooth.
Fruits:
Capsules, smooth, 8-10 mm long; seeds brown.
Notes:
Two varieties occur in BC

1. All petals bearded................... var. cognata (Greene) C.L. Hitchc.

1. Only the lower three petals bearded........................ var. nephrophylla

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to wet meadows, thickets, marshes, open woodlands and streambanks in the montane to alpine zones; frequent in SE BC, rare northward, absent along the Coast N of 50degreeN; N to NT, E to NF and S to ME, NH, PA, WV, IN, IO, LA, TX, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Viola cognata

Taxonomic and Nomenclatural Links


Genetic information (NCBI Taxonomy Database)
 International Plant Names Index
 Taxonomic Information from the World Flora Online
 Integrated Taxonomic Information System

Additional Photo Sources

Images From CalPhoto
UT Austin's Native Plant Database
 Google Image Search
 Flickr Image Search

General References

Google Scholar Search
Family References
 General Botanical References for BC
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2026-09-14 10:49:28 PM ]
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