Viola lithion N.H.Holmgren & P.K.Holmgren

Rock violet (en)

Species

Angiosperms > Malpighiales > Violaceae > Viola

Characteristics

Plants perennial, caulescent, not stoloniferous, 5–15 cm. Stems 1–3, ascending to erect, glabrous, on caudex from fleshy rhizome. Leaves basal and cauline; basal: 1–4; stipules unknown; petiole 1–10 cm, glabrous, sometimes finely puberulent; blade broadly ovate or deltate to broadly deltate, 1–2.5(–2.9) × 0.6–2.2(–2.6) cm, base usually cordate to truncate, rarely rounded, margins crenate-dentate, eciliate, apex acute, surfaces glabrous; cauline similar to basal except: stipules lanceolate, margins usually fimbriate-toothed, sometimes entire, apex attenuate or acute; petiole 1.1–3.7 cm, sometimes finely puberulent; blade ovate to deltate, 0.7–2.2 × 0.4–1.2 cm, base sometimes rounded on distal blades. Peduncles 3–6(–10) cm, glabrous. Flowers: sepals lanceolate, margins eciliate, auricles 0.5–1 mm; petals blue to pale violet on both surfaces with yellow area basally, lower 3 purple-veined, lowest with yellow area, lateral 2 bearded, lowest 5.5–11 mm, spur white to pale violet, gibbous, 0.5–1.3 mm; style head bearded; cleistogamous flowers unknown. Capsules subglobose, ca. 5 mm, glabrous. Seeds dark brown, ca. 1.8 mm.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 0.15
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) -

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 -

Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:305350-2
WFO ID wfo-0001254415
COL ID 5BH2T
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Viola lithion