Viola trinervata |
Viola tomentosa |
|
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3-nerve violet, desert pansy, Rainier or sagebrush or three-nerve violet, Rainier violet, sagebrush violet, three-nerve violet |
felt-leaf violet, woolly or felt-leaf or feltleaf violet, woolly violet |
|
Habit | Plants perennial, caulescent, not stoloniferous, 5–15 cm. | Plants perennial, caulescent, not stoloniferous, 7–10 cm. |
Stems | 1–4, decumbent, ascending, or erect, ca. 1/2 subterranean, glabrous, from single, vertical, deep-seated caudex. |
1–3(–5), prostrate or decumbent to erect, leafy proximally and distally, densely white-tomentose, from usually vertical, subligneous rhizome. |
Leaves | basal and cauline; basal: 1–7, palmately compound, leaflets 3–5; stipules adnate to petiole, forming 2 linear-lanceolate wings, unlobed, margins entire, apex of each wing free, acute; petiole 4.5–15 cm, glabrous; blade reniform or ovate to ± orbiculate, 2–5 × 2.5–5 cm, coriaceous, base tapered, leaflets cleft or dissected into 2–3 elliptic, lanceolate, or oblanceolate lobes 2–7 mm wide, margins usually entire, eciliate, apex acute, mucronulate, surfaces glabrous (± glaucous), abaxial surface usually with prominent vein parallel to each margin; cauline similar to basal except: stipules lanceolate; petiole 1–5.5 cm; blade 1–3 × 2–4.5 cm. |
basal and cauline; basal: 1–6; stipules linear to broadly ovate-oblong, margins entire, sometimes with scattered glandular hairs, apex acute to obtuse; petiole 2–6 cm, densely white-tomentose; blade ± oblanceolate to elliptic, 1.5–5 × 1.4–2.1 cm, base attenuate, usually oblique, margins usually entire, rarely crenate distally, ciliate, apex acute to usually obtuse, mucronulate, surfaces densely white-tomentose abaxially, strigose adaxially; cauline similar to basal except: stipules ovate, lanceolate, oblanceolate, or oblong, margins entire or toothed, densely ciliate with white hairs; petiole 1.5–3.5 cm; blade 1.8–4 × 0.6–1.1 cm. |
Peduncles | 1.1–7 cm, glabrous. |
1–4 cm, densely white-tomentose. |
Flowers | sepals lanceolate, margins eciliate, auricles 0–1 mm; petals: upper 2 often overlapping, dark reddish violet on both surfaces, lower 3 lilac, rarely white, lateral 2 bearded, with yellow patch basally and reddish violet patch distal to yellow patch, lowest 9–15 mm with yellow patch, dark reddish violet-veined, spur yellow, gibbous, 0.6–1.5 mm; style head bearded; cleistogamous flowers absent. |
sepals lanceolate, margins ciliate-tomentose, auricles 0.5–1 mm; petals deep lemon-yellow adaxially, upper 2 often brownish purple abaxially, lower 3 dark brown- to brownish purple-veined, lateral 2 bearded, lowest 6–11 mm, spur yellow, gibbous, 0.5–1.5 mm; style head bearded; cleistogamous flowers absent. |
Capsules | ovoid, 7–12 mm, glabrous. |
± spherical, 4–5 mm, densely white-tomentose. |
Seeds | tan, 3.2–4.5 mm. |
brown with lighter brown mottling, 2.5–2.8 mm. |
2n | = 12. |
|
Viola trinervata |
Viola tomentosa |
|
Phenology | Flowering Mar–May. | Flowering May–Aug. |
Habitat | Sagebrush flats, dry, rocky hillsides, usually in gravelly soil | Dry, gravelly places, open ponderosa, Jeffrey, lodgepole pine forests |
Elevation | 400–1200 m (1300–3900 ft) | 1500–2000 m (4900–6600 ft) |
Distribution |
OR; WA
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CA
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Discussion | In some populations of Viola trinervata the lower three petals are white with a yellow area proximally (V. B. Baird 1942). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Viola tomentosa occurs in El Dorado, Nevada, Placer, Plumas, and Sierra counties. M. S. Baker (1949) reported that nearly every leaf axil of V. tomentosa produces a flower bud and that these buds produce chasmogamous flowers late in season instead of cleistogamous flowers, as do other members of the V. nuttallii complex. Viola tomentosa hybridizes with V. purpurea; the hybrids appeared sterile (M. S. Baker 1949). J. Clausen (1964) reported a putative hybrid between V. tomentosa and V. sheltonii from one location in Sierra County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 161. | FNA vol. 6, p. 160. |
Parent taxa | Violaceae > Viola | Violaceae > Viola |
Sibling taxa | ||
Synonyms | V. beckwithii var. trinervata | |
Name authority | (Howell) Howell ex A. Gray: Bot. Gaz. 11: 290. (1886) | M. S. Baker & J. C. Clausen: Leafl. W. Bot. 5: 142. (1949) |
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