Viola sheltonii Torr.

Shelton's violet (en)

Species

Angiosperms > Malpighiales > Violaceae > Viola

Characteristics

Plants perennial, caulescent, not stoloniferous, 3–27 cm. Stems 1–3, prostrate, decumbent, or erect, glabrous or sparsely puberulent, from short, often vertical, deep-seated or usually shallow, subligneous rhizome. Leaves basal and cauline; basal: 1–3, palmately compound, leaflets 3; stipules lanceolate-ovate, margins laciniate with gland-tipped projections, apex acute to acuminate; petiole 8.6–21 cm, glabrous or sparsely puberulent; blade reniform or ovate to ± orbiculate, 2–7 × 2–11 cm, coriaceous, base tapered, each leaflet cleft or dissected into 3 ± obovate lobes, each lobe further divided into 2–3 oblanceolate, pandurate, spatulate, oblong, lanceolate, or elliptic, lobes 2–10 mm wide, margins entire, ciliate or eciliate, apex acute to obtuse, mucronulate, surfaces glabrous or sparsely puberulent; cauline similar to basal except: stipules ovate to lanceolate, margin projections gland-tipped or eglandular, apex long-acuminate; petiole 5.5–12 cm; blade 1.2–6.3 × 1.2–10.5 cm. Peduncles 5–19 cm, glabrous or sparsely puberulent. Flowers: sepals lanceolate, margins ciliate or eciliate, auricles 0.5–1 mm; petals deep lemon-yellow adaxially, upper 2 dark brown to brownish purple abaxially, lower 3 and sometimes upper 2 brownish purple-veined, lateral 2 bearded or beardless, lowest 7–18 mm, spur yellowish with brownish purple specks, gibbous, 1–2 mm; style head bearded; cleistogamous flowers axillary. Capsules oblong to ovoid, 6–8 mm, glabrous or puberulent. Seeds brownish, shiny, ca. 2.5 mm. 2n = 12.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.03 - 0.27
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 14 - 21
Germination temperacture (C°) 18 - 23
Germination luminosity dark
Germination treatment stratification
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Viola sheltonii flower picture by L. Ruiz (cc-by-sa)

Distribution

Viola sheltonii world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:869257-1
WFO ID wfo-0001144692
COL ID 7G43P
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Viola sheltonii Viola biternata Viola sheltonii var. biternata