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3-nerve violet, desert pansy, Rainier or sagebrush or three-nerve violet, Rainier violet, sagebrush violet, three-nerve violet

Carolina violet, southern woolly violet

Habit Plants perennial, caulescent, not stoloniferous, 5–15 cm. Plants perennial, acaulescent, not stoloniferous, 5–15 cm; rhizome thick, fleshy.
Stems

1–4, decumbent, ascending, or erect, ca. 1/2 subterranean, glabrous, from single, vertical, deep-seated caudex.

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, 4–9, prostrate to ascending;

stipules linear-lanceolate, margins entire, apex acute;

petiole 3–10 cm, densely pubescent;

blade unlobed, reniform or ovate to elliptic, 1–8 × 1–5.5 cm, base cordate, margins serrate, ciliate, apex rounded to acute, mucronulate, surfaces densely pubescent.

Peduncles

1.1–7 cm, glabrous.

4–10 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 to ovate, margins ciliate, auricles 1–2 mm;

petals light to dark blue-violet on both surfaces, lower 3 white basally and dark violet-veined, lateral 2 bearded, spur sometimes bearded, lowest 10–20 mm, spur usually white, gibbous, 2–3 mm;

style head beardless; cleistogamous flowers on ascending to erect peduncles.

Capsules

ovoid, 7–12 mm, glabrous.

ellipsoid, 6–10 mm, glabrous.

Seeds

tan, 3.2–4.5 mm.

beige, mottled to bronze, or dark brown, 1.5–2 mm.

2n

= 54.

Viola trinervata

Viola villosa

Phenology Flowering Mar–May. Flowering Apr–Jun.
Habitat Sagebrush flats, dry, rocky hillsides, usually in gravelly soil Sandy, pine-oak and pine-oak-hickory woods and disturbed ground
Elevation 400–1200 m (1300–3900 ft) 10–300 m (0–1000 ft)
Distribution
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; FL; GA; LA; MS; NC; OK; SC; TX
[WildflowerSearch map]
[BONAP county map]
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.)

Much of the foliage of Viola villosa remains green throughout the winter (V. B. Baird 1942).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 6, p. 161. FNA vol. 6, p. 163.
Parent taxa Violaceae > Viola Violaceae > Viola
Sibling taxa
V. adunca, V. affinis, V. arvensis, V. bakeri, V. beckwithii, V. bicolor, V. biflora, V. blanda, V. brittoniana, V. canadensis, V. canina, V. charlestonensis, V. clauseniana, V. cucullata, V. cuneata, V. douglasii, V. egglestonii, V. epipsila, V. flettii, V. frank-smithii, V. glabella, V. guadalupensis, V. hallii, V. hastata, V. hirsutula, V. howellii, V. japonica, V. labradorica, V. lanceolata, V. langsdorffii, V. lithion, V. lobata, V. macloskeyi, V. missouriensis, V. nephrophylla, V. novae-angliae, V. nuttallii, V. ocellata, V. odorata, V. orbiculata, V. palmata, V. palustris, V. pedata, V. pedatifida, V. pedunculata, V. pinetorum, V. praemorsa, V. primulifolia, V. prionantha, V. pubescens, V. purpurea, V. quercetorum, V. renifolia, V. riviniana, V. rostrata, V. rotundifolia, V. sagittata, V. selkirkii, V. sempervirens, V. septemloba, V. sheltonii, V. sororia, V. striata, V. subsinuata, V. tomentosa, V. tricolor, V. tripartita, V. umbraticola, V. utahensis, V. vallicola, V. villosa, V. walteri
V. adunca, V. affinis, V. arvensis, V. bakeri, V. beckwithii, V. bicolor, V. biflora, V. blanda, V. brittoniana, V. canadensis, V. canina, V. charlestonensis, V. clauseniana, V. cucullata, V. cuneata, V. douglasii, V. egglestonii, V. epipsila, V. flettii, V. frank-smithii, V. glabella, V. guadalupensis, V. hallii, V. hastata, V. hirsutula, V. howellii, V. japonica, V. labradorica, V. lanceolata, V. langsdorffii, V. lithion, V. lobata, V. macloskeyi, V. missouriensis, V. nephrophylla, V. novae-angliae, V. nuttallii, V. ocellata, V. odorata, V. orbiculata, V. palmata, V. palustris, V. pedata, V. pedatifida, V. pedunculata, V. pinetorum, V. praemorsa, V. primulifolia, V. prionantha, V. pubescens, V. purpurea, V. quercetorum, V. renifolia, V. riviniana, V. rostrata, V. rotundifolia, V. sagittata, V. selkirkii, V. sempervirens, V. septemloba, V. sheltonii, V. sororia, V. striata, V. subsinuata, V. tomentosa, V. tricolor, V. trinervata, V. tripartita, V. umbraticola, V. utahensis, V. vallicola, V. walteri
Synonyms V. beckwithii var. trinervata V. alabamensis
Name authority (Howell) Howell ex A. Gray: Bot. Gaz. 11: 290. (1886) Walter: Fl. Carol., 219. (1788)
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