Viola trinervata |
Viola ocellata |
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3-nerve violet, desert pansy, Rainier or sagebrush or three-nerve violet, Rainier violet, sagebrush violet, three-nerve violet |
pinto violet, two-eyed violet, western heart's ease, western heart's ease or two-eyed or southern two-eyed violet |
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Habit | Plants perennial, caulescent, not stoloniferous, 5–15 cm. | Plants perennial, caulescent, not stoloniferous, 2–37 cm. |
Stems | 1–4, decumbent, ascending, or erect, ca. 1/2 subterranean, glabrous, from single, vertical, deep-seated caudex. |
1–3, ascending to erect, ± glabrous or usually puberulent, on caudex from shallow, fleshy rhizome or deep-seated caudex with fleshy roots. |
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 deltate, margins laciniate, apex usually long-acuminate; petiole 3.7–10 cm, puberulent; blade ovate, deltate, or subreniform, 1–6 × 1.2–4 cm, base usually cordate to subcordate, margins crenate, usually ciliate, apex acute, mucronulate, surfaces usually sparsely puberulent, glabrous early; cauline similar to basal except: stipules lanceolate, margins ±fimbriate, sometimes stipitate-glandular, sometimes entire, erose, or ± laciniate; petiole 0.4–9 cm; blade ovate to deltate, 1.6–4.4 × 1.1–3.6 cm, base subcordate to truncate, margins crenate to ± serrate, ciliate, apex acute to obtuse. |
Peduncles | 1.1–7 cm, glabrous. |
1–10 cm, puberulent. |
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, auricles 0.5–1.5 mm; petals white adaxially, upper 2 and sometimes lower 3 deep reddish violet abaxially, all with yellow area basally, lateral 2 with purple patch basally distal to smaller yellow area, bearded, lowest with yellow patch basally, purple-veined, 5–15 mm, spur yellow or greenish, gibbous, 1–2.5 mm; style head bearded; cleistogamous flowers axillary. |
Capsules | ovoid, 7–12 mm, glabrous. |
spherical to spherical-ovoid, 5–11 mm, minutely scabrous. |
Seeds | tan, 3.2–4.5 mm. |
brown-purple, ca. 2 mm. |
2n | = 12. |
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Viola trinervata |
Viola ocellata |
|
Phenology | Flowering Mar–May. | Flowering Mar–Jul. |
Habitat | Sagebrush flats, dry, rocky hillsides, usually in gravelly soil | Rocky areas, grassy banks, thickets, often on serpentine soil |
Elevation | 400–1200 m (1300–3900 ft) | 100–1100 m (300–3600 ft) |
Distribution |
OR; WA
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CA; OR
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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.) |
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Source | FNA vol. 6, p. 161. | FNA vol. 6, p. 140. |
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) | Torrey & A. Gray: Fl. N. Amer. 1: 142. (1838) |
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