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bird-foot violet

common dog-violet, dog violet, wood violet

Habit Plants perennial, acaulescent, not stoloniferous, 5–30 cm; rhizome thick, fleshy. Plants perennial, caulescent, not stoloniferous, 1.8–30 cm.
Stems

1–5, erect, ascending, or decumbent, glabrous or puberulent, on caudex from subligneous rhizome.

Leaves

basal, 4–10, ascending to erect, deeply divided;

stipules linear-lanceolate, margins entire, lacerate, or shallowly divided, apex acute;

petiole 2–12 cm, glabrous or sparsely puberulent;

blade 3–9(–10)-lobed, lobes similar in width and shape, spatulate, lanceolate ± linear, deltate, or ovate, 1–4 × 1–4 cm, base attenuate or broadly cordate to cuneate, margins entire, ciliate or eciliate, apex rounded to usually acute, surfaces usually glabrous, sometimes pubescent on abaxial veins.

basal and cauline;

basal: 3–5;

stipules subulate or lanceolate, margins fimbriate, apex acute to acuminate;

petiole 2.5–12 cm, usually glabrous, rarely puberulent;

blade ovate to reniform, 2.3–5.5 × 2.6–5.3 cm, base cordate to deeply cordate, margins crenate, eciliate, apex acute or obtuse, abaxial surface glabrous or sparsely puberulent, adaxial surface usually sparsely puberulent, sometimes glabrous;

cauline similar to basal except: stipules ovate or lanceolate, margins fimbriate, apex long-acuminate;

petiole 1.3–6 cm;

blade ovate or broadly ovate, 1.8–5 × 1.5–4.2 cm, apex acute.

Peduncles

5–12 cm, glabrous or pubescent.

2.8–10 cm, glabrous, sometimes puberulent.

Flowers

sepals lanceolate, margins mostly ciliate, at least proximally, auricles 1–2 mm;

petals uniformly light to dark blue-violet on both surfaces or upper 2 darker adaxially, sometimes white, upper and lateral 2 often darker basally, lowest, seldom others, dark violet-veined, all beardless, lowest white basally, 12–24 mm, spur white, gibbous, 2–3 mm;

style head beardless; cleistogamous flowers absent.

sepals lanceolate, margins eciliate;

auricles 1.8–2.5 mm (enlarged in fruit);

petals violet on both surfaces, lower 3 usually white basally, rarely violet, dark violet-veined, lateral 2 bearded, lowest 13–17 mm, spur white, rarely violet, elongated, 5–7 mm, tip straight or hooked, blunt;

style head beardless (surface papillose); cleistogamous flowers axillary.

Capsules

ellipsoid, 6–10 mm, glabrous.

ovoid or oblong, 8–12 mm, glabrous.

Seeds

beige, mottled to brown, 1.4–3 mm.

pale to light brown, 1.8–2.1 mm.

2n

= 56.

= 40.

Viola pedata

Viola riviniana

Phenology Flowering Mar–Sep.
Habitat Roadsides and trails, sidewalk cracks, parks
Elevation 0–200 m (0–700 ft)
Distribution
from FNA
AL; AR; CT; DC; DE; GA; IA; IL; IN; KS; KY; LA; MA; MD; MI; MN; MO; MS; NC; NE; NH; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; WI; WV; ON
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; WA; BC; Eurasia; nw Africa [Introduced in North America; introduced in Australia]
Discussion

Varieties 2 (2 in the flora).

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

Viola riviniana has become established in several states on the Pacific Coast. It is cultivated and sold through nurseries in the United States. In the nursery trade in California and elsewhere, it is incorrectly referred to incorrectly as V. labradorica ‘Purpurea.’ In some plants shoots arise from adventitious buds on the roots (A. R. Clapham et al. 1987; T. Marcussen and T. Karlsson 2010).

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

Key
1. Leaf blades 7–9-lobed, lobes spatulate, lanceolate, or ± linear, sometimes with narrowly deltate to falcate appendages toward apex.
var. pedata
1. Leaf blades 3–5(–10)-lobed, lobes deltate or ovate.
var. ranunculifolia
Source FNA vol. 6, p. 143. FNA vol. 6, p. 154.
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. 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, 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. 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, V. walteri
Subordinate taxa
V. pedata var. pedata, V. pedata var. ranunculifolia
Name authority Linnaeus: Sp. Pl. 2: 933. (1753) Reichenbach: Iconogr. Bot. Pl. Crit. 1: 81, plate 95. (1823)
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