UW Burke Herbarium species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Viola sororia

Viola adunca

northern blue violet, northern woodland violet

early blue violet, wild dog violet
Habit Glabrous to densely puberulent perennial from slender rhizomes, from stemless to 10 cm. tall.
Leaves

Leaves short- to long-petiolate, the blade cordate-ovate to lance-ovate, with fine, rounded teeth, 1-3 cm. long;

stipules liner-lanceolate, 3-10 mm. long, entire to remotely slender-toothed.
Flowers

Flowers 5-15 mm. long, the spur on the lowest petal slender, over half the length of the petal;

petals blue to deep violet, the lower three with a whitish base penciled in violet, the lateral pair white-bearded;

style head bearded with thick hairs. Some flowers also cleistogamous (do not open up but do self-pollinate and produce seed).
Fruits

Fruit a 3-valved capsule, ovary superior, placentation parietal.

Viola sororia

Viola adunca
Flowering time May-July April-August
Habitat Dry to moist forest openings, thickets, meadows, and stream banks at middle elevations. Dry to moist meadows and open woods, from the lowlands to subalpine areas.
Distribution
Occurring east of the Cascades crest in northeastern Washington; Yukon Territory to California, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.
[WildflowerSearch map]
[BONAP county map]
Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Review Group 1 in Washington (WANHP) Not of concern
Sibling taxa
V. adunca, V. arvensis, V. canadensis, V. flettii, V. glabella, V. howellii, V. lanceolata, V. langsdorffii, V. macloskeyi, V. nephrophylla, V. nuttallii, V. odorata, V. orbiculata, V. palustris, V. pluviae, V. purpurea, V. renifolia, V. riviniana, V. selkirkii, V. sempervirens, V. sheltonii, V. tricolor, V. trinervata, V. ×wittrockiana
V. arvensis, V. canadensis, V. flettii, V. glabella, V. howellii, V. lanceolata, V. langsdorffii, V. macloskeyi, V. nephrophylla, V. nuttallii, V. odorata, V. orbiculata, V. palustris, V. pluviae, V. purpurea, V. renifolia, V. riviniana, V. selkirkii, V. sempervirens, V. sheltonii, V. sororia, V. tricolor, V. trinervata, V. ×wittrockiana
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in UW Burke Herbarium yet, or it's listed under a synonym.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers