Burke: Viola bakeri vs. Viola trinervata

	Viola bakeri	Viola trinervata
		desert pansy, 3-nerved violet, sagebrush violet
Habit	Perennial from short, erect rhizomes, the stems up to 15 cm. long.	Glabrous, somewhat glaucous perennial from short, thick, very deep-seated rhizomes, the stems several, naked below, 5-15 cm. tall.
Leaves	Leaf blades entire, elliptic-lanceolate, tapering to the petiole, 2-5 cm. long; petiole 3-12 cm. long; stipules attached to the petiole, the free portion few-toothed.	Leaf blades palmately lobed or compound, the main segments once or twice dissected, the ultimate segments narrowly elliptic, 1.5-4 cm. long; leaves leathery, prominently 3-nerved on the lower surface; petioles longer than the blades.
Flowers	Flowers with peduncles shorter than the leaves; flowers 5-12 mm. long, yellow, the lower 3 penciled with brownish-purple, the lateral pair bearded; style head bearded, rounded.	Peduncles exceeding the leaves; flowers about 1.5 cm. long, usually bicolored, the upper pair deep reddish-violet, the lower 3 pale to deep lilac, with yellowish or whitish base and purple penciling, occasionally all white or all deep purple; style head hairy.
Fruits	a glabrous, 3-valved capsule, ovary superior, placentation parietal.	Fruit a 3-valved capsule, ovary superior, placentation parietal.

	Viola bakeri	Viola trinervata
Flowering time	May-July	March-June
Habitat	Moist to dry openings in coniferous forests.	Sagebrush flats and rocky hillsides, often on lithosol, where vernally moist.
Distribution	Occurring chiefly east of the Cascades crest in Washington from Mt. Adams south; south-central Washington to California and Nevada. [WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in Washington; north-central Washington to southeastern Oregon. [WildflowerSearch map] [BONAP county map]
Origin	Native	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. 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. 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. ×wittrockiana
Web links	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, 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: OR, WA Local Web sites: 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 trinervata

desert pansy, 3-nerved violet, sagebrush violet

Habit

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

Glabrous, somewhat glaucous perennial from short, thick, very deep-seated rhizomes, the stems several, naked below, 5-15 cm. tall.

Leaves

Leaf blades entire, elliptic-lanceolate, tapering to the petiole, 2-5 cm. long;

petiole 3-12 cm. long;

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

Leaf blades palmately lobed or compound, the main segments once or twice dissected, the ultimate segments narrowly elliptic, 1.5-4 cm. long;

leaves leathery, prominently 3-nerved on the lower surface;

petioles longer than the blades.

Flowers

Flowers with peduncles shorter than the leaves;

flowers 5-12 mm. long, yellow, the lower 3 penciled with brownish-purple, the lateral pair bearded;

style head bearded, rounded.

Peduncles exceeding the leaves;

flowers about 1.5 cm. long, usually bicolored, the upper pair deep reddish-violet, the lower 3 pale to deep lilac, with yellowish or whitish base and purple penciling, occasionally all white or all deep purple;

style head hairy.

Fruits

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

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