UW Burke Herbarium species comparison

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Viola odorata

Viola praemorsa

sweet blue violet
Habit Low, fragrant, creeping, soft-hairy perennial with stolons that root at the nodes. Perennial from short, erect rhizomes, the stems up to 15 cm. long.
Leaves

Leaves tufted, cordate and rounded, petiolate, enlarging in summer.

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 blue-violet or white, rarely lilac, pink or yellow;

sepals blunt.

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 3-valved capsule, ovary superior, placentation parietal.

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

Viola odorata

Viola praemorsa
Flowering time March-September April-July
Habitat Sheltered, disturbed areas in somewhat moist soil. Grassland, shrub-steppe, open slopes and ridges, and coniferous forest openings.
Distribution
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Idaho; also in eastern 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 Introduced from Europe Native
Conservation status Not of concern 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. 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
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 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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