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prostrate blue violet

Habit Plants perennial, caulescent, stoloniferous, 5–19 cm; stolons green or reddish, leafy, sometimes rooting at nodes, becoming lignified in age.
Stems

1–5, prostrate, spreading, finely puberulent, from current and/or previous year’s growth, on usually vertical, fleshy rhizome, rooting and forming rosettes at or near tip; rooted rosettes often develop into an erect, fleshy caudex from which new stems are produced.

Leaves

basal and cauline;

basal: 3–6;

stipules lanceolate, margins laciniate, projections often long-filamentous, apex long-acuminate;

petiole 2.3–7.3 cm, glabrous or pubescent;

blade often purple-spotted abaxially and/or adaxially, ovate to reniform, 1.2–5 × 1.6–3.6 cm, base deeply to broadly cordate, margins crenulate to serrate, ciliate or eciliate, apex rounded to obtuse, surfaces glabrous or pubescent;

cauline similar to basal except: stipules ovate to lanceolate, margins laciniate;

petiole 1–3.5 cm;

blade 1.3–2.9 × 1.4–3.2 cm.

Peduncles

5–9.6 cm, glabrous or pubescent.

Flowers

sepals lanceolate to ovate, margins mostly eciliate, auricles 0.5–1 mm;

petals pale to bluish violet on both surfaces, lower 3 white basally and darker violet-veined, lateral 2 and often upper 2 and lowest bearded, lowest 15–18 mm, spur white, gibbous to usually elongated, 3–5 mm;

style head bearded; cleistogamous flowers axillary.

Capsules

ovoid to ellipsoid, 5–7 mm, glabrous.

Seeds

brown, 1–1.5 mm.

2n

= 20.

Viola walteri

Distribution
from FNA
AL; AR; FL; GA; KY; LA; MD; MS; NC; OH; PA; SC; TN; TX; VA; WV
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Discussion

Varieties 2 (2 in the flora).

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

Key
1. Leaf blades pubescent, hairs scattered throughout or concentrated along veins, adaxial surfaces, or toward margins; stipule margin processes 1/2+ stipule length.
var. walteri
1. Leaf blades glabrous or pubescent, hairs usually confined to adaxial surfaces; stipule margin processes to 1/2 stipule length.
var. appalachiensis
Source FNA vol. 6, p. 163.
Parent taxa 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. trinervata, V. tripartita, V. umbraticola, V. utahensis, V. vallicola, V. villosa
Subordinate taxa
V. walteri var. appalachiensis, V. walteri var. walteri
Name authority House: Torreya 6: 172. (1906)
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