UW Burke Herbarium species comparison

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Viola odorata

Viola affinis

sweet blue violet
Habit Low, fragrant, creeping, soft-hairy perennial with stolons that root at the nodes. Glabrous, acaulescent perennial with shallow, fleshy, spreading rhizomes.
Leaves

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

Leaf blades deeply ovate-cordate to cordate-triangular, up to 7 cm. in width, with rounded teeth;

petioles 5-25 cm. long;

stipules linear-lanceolate, entire.
Flowers

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

sepals blunt.

Flowers solitary, 10-20 mm. long, on peduncles usually exceeding the leaves;

spur short, saccate;

petals 5, bluish-violet, the lower 3 whitish at the base, prominently bearded, the upper pair sometimes not bearded;

style glabrous.
Fruits

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

Capsule, 3-valved.

Viola odorata

Viola affinis
Flowering time March-September May-July
Habitat Sheltered, disturbed areas in somewhat moist soil. Moist places, especially in meadows and along streams.
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 chiefly east of the Cascades crest in Washington; Yukon Territory to California, east across most of North America to the Atlantic Coast.
[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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