Viola trinervata |
Viola pubescens |
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3-nerve violet, desert pansy, Rainier or sagebrush or three-nerve violet, Rainier violet, sagebrush violet, three-nerve violet |
downy yellow violet, yellow forest violet |
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Habit | Plants perennial, caulescent, not stoloniferous, 5–15 cm. | Plants perennial, caulescent, not stoloniferous, 10–45 cm. | ||||
Stems | 1–4, decumbent, ascending, or erect, ca. 1/2 subterranean, glabrous, from single, vertical, deep-seated caudex. |
1–3+, ascending to erect, leafless proximally, leafy distally, glabrous or puberulent, from subligneous rhizome. |
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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: 0–4; stipules ovate to lanceolate, margins entire, coarsely toothed, or crenate, apex acute or obtuse; petiole 2.7–19.6 cm, lanceolate, margins ciliate or eciliate, auricles 0.1–0.5 mm; petals lemon-yellow on both surfaces, lower 3 brownish purple-veined, lateral 2 and sometimes others, bearded, lowest 8–18 mm, spur yellow to greenish, gibbous, 1–2.5 mm; style head bearded; cleistogamous flowers axillary. |
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Peduncles | 1.1–7 cm, glabrous. |
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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. |
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Capsules | ovoid, 7–12 mm, glabrous. |
ellipsoid, 8–12(–20) mm, glabrous or tomentose. |
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Seeds | tan, 3.2–4.5 mm. |
brown, 1.8–3 mm. |
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2n | = 12. |
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Viola trinervata |
Viola pubescens |
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Phenology | Flowering Mar–May. | |||||
Habitat | Sagebrush flats, dry, rocky hillsides, usually in gravelly soil | |||||
Elevation | 400–1200 m (1300–3900 ft) | |||||
Distribution |
OR; WA
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AL; AR; CT; DC; DE; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NH; NJ; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; VT; WI; WV; WY; MB; NB; NS; ON; PE; QC; SK
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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.) |
Varieties 2 (2 in the flora). Viola pubescens is similar in overall appearance to V. glabella. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 6, p. 161. | FNA vol. 6, p. 149. | ||||
Parent taxa | Violaceae > Viola | Violaceae > Viola | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | V. beckwithii var. trinervata | Crocion pubescens | ||||
Name authority | (Howell) Howell ex A. Gray: Bot. Gaz. 11: 290. (1886) | Aiton: Hort. Kew. 3: 290. (1789) | ||||
Web links |