UW Burke Herbarium species comparison

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Viola arvensis

Viola nuttallii

European field pansy

Nuttall's violet
Habit Puberulent, freely-branched annual, 1-3 dm. tall.
Leaves

Leaf blades ovate to lanceolate, coarsely round-toothed, 1-3 cm. long, about equaling the petioles;

stipules very large, laciniate into 5-9 segments, usually with one leaf-like segment nearly as large as the main blade.

Flowers

Flowers long-pedunculate, solitary in the leaf axils, whitish or light yellow with a tinge of blue, the spur short;

sepals lanceolate, about as long as the petals;

style head copiously short-hairy.

Fruits

Fruit a 3-valved capsule, ovary superior, placentation parieta

Viola arvensis

Viola nuttallii
Flowering time March-June April-July
Habitat Fields, roadsides, wastelots, and other disturbed areas where escaping from cultivation. Grassland, sagebrush and juniper flats, and moist to dry openings in coniferous forests.
Distribution
Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Occurring chiefly east of the Cascades crest in Washington; Britsh Columbia to California, east to the Rocky Mountains.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Europe Native
Conservation status Not of concern Not of concern
Sibling taxa
V. adunca, 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
V. adunca, V. arvensis, V. canadensis, V. flettii, V. glabella, V. howellii, V. lanceolata, V. langsdorffii, V. macloskeyi, V. nephrophylla, 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
Subordinate taxa
V. nuttallii var. bakeri, V. nuttallii var. praemorsa, V. nuttallii var. vallicola
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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