Burke: Viola sororia vs. Viola praemorsa

	Viola sororia	Viola praemorsa
	northern blue violet, northern woodland violet
Habit		Perennial from short, erect rhizomes, the stems up to 15 cm. long.
Leaves		Leaf blades conspicuously hairy, thick and fleshy, entire, ovate-lanceolate, 5-10 cm. long; petiole 5-15 cm. long; stipules attached to the petiole, the free portion few-toothed.
Flowers		Flowers with peduncles shorter than the leaves; flowers 8-15 mm. long, yellow, the upper petals brownish-backed, the lower 3 penciled with brownish-purple, the lateral pair bearded; style head bearded, rounded.
Fruits		Fruit a hairy, 3-valved capsule, ovary superior, placentation parietal.

	Viola sororia	Viola praemorsa
Flowering time	May-July	April-July
Habitat	Dry to moist forest openings, thickets, meadows, and stream banks at middle elevations.	Grassland, shrub-steppe, open slopes and ridges, and coniferous forest openings.
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]	Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho, Montana, Wyoming and Utah. [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. 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. sororia, V. tricolor, V. trinervata, V. ×wittrockiana
Web links	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Viola sororia

Viola praemorsa

northern blue violet, northern woodland violet

Habit

Perennial from short, erect rhizomes, the stems up to 15 cm. long.

Leaves

Leaf blades conspicuously hairy, thick and fleshy, entire, ovate-lanceolate, 5-10 cm. long;

petiole 5-15 cm. long;

stipules attached to the petiole, the free portion few-toothed.

Flowers

Flowers with peduncles shorter than the leaves;

flowers 8-15 mm. long, yellow, the upper petals brownish-backed, the lower 3 penciled with brownish-purple, the lateral pair bearded;

style head bearded, rounded.

Fruits

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

Viola sororia

Viola praemorsa

Flowering time

May-July

April-July

Habitat

Dry to moist forest openings, thickets, meadows, and stream banks at middle elevations.

Grassland, shrub-steppe, open slopes and ridges, and coniferous forest openings.

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]