Viola trinervata
Viola striata
3-nerve violet, desert pansy, Rainier or sagebrush or three-nerve violet, Rainier violet, sagebrush violet, three-nerve violet
cream or cream-white or pale or striped or striped cream violet, creamy violet, striped cream violet, striped white violet, violette strièe
1–4, decumbent, ascending, or erect, ca. 1/2 subterranean, glabrous, from single, vertical, deep-seated caudex.
1–4, ascending to erect (often declining during anthesis), glabrous or pubescent, on caudex from fleshy rhizome.
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: 2–6;
stipules lanceolate to narrowly deltate, margins laciniate, apex acute;
petiole 3–6 cm, glabrous or puberulent;
blade ovate to reniform, 2–7 × 1–2.5 cm, base cordate, margins crenate to serrate, ciliate or eciliate, apex obtuse to acute, surfaces glabrous or pubescent;
cauline similar to basal except: stipules lanceolate, margins laciniate;
petiole 3–7 cm;
distal blades ovate to deltate, 1–6 × 1–4 cm, base cordate, apex acuminate to acute.
1.1–7 cm, glabrous.
5–12 cm, glabrous or pubescent.
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 or eciliate, auricles 2–3 mm;
petals white or cream on both surfaces, without yellow patch basally, lowest and usually lateral 2 purple-veined, lateral 2 and sometimes all densely bearded, lowest 10–18 mm, spur white, gibbous to elongated, 3–6 mm;
style head bearded; cleistogamous flowers axillary.
ovoid, 7–12 mm, glabrous.
ellipsoid, 6–7 mm, glabrous.
tan, 3.2–4.5 mm.
beige to bronze, 1.5–3 mm.
= 20.
Viola trinervata
Viola striata
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.)
Dead, long-persistent stems of Viola striata are often present the following season. In flower, the plants are often mistaken for V. canadensis because the petals are whitish (H. E. Ballard 1992).
Viola striata reportedly hybridizes with V. labradorica (= V. ×eclipes H. E. Ballard), V. rostrata (= V. ×brauniae Grover ex Cooperrider), V. walteri var. appalachiensis (= V. ×wujekii H. E. Ballard), and V. walteri var. walteri (= V. ×cooperrideri H. E. Ballard).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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