Viola davidii Franch.

Species

Angiosperms > Malpighiales > Violaceae > Viola

Characteristics

Herbs perennial, nearly acaulescent, 7-10 cm tall, glabrous. Rhizome obliquely ascending, shortly noded, with dense rootlets. Stolon developed, 10-15 cm, with scattered leaves and flowers, producing adventitious roots at nodes, top usually developing into a new plant. Leaves nearly basal; stipules mostly free, brown, broadly lanceolate, 1-1.5 cm, adaxially brown striate, margin remotely fimbriate-dentate, apex long acuminate; petioles unequal in length, longest to 5 cm; leaf blade abaxially often glaucous, adaxially greenish, ovate or ovate-orbicular, 2-7 × 1.5-3.5 cm, both surfaces glabrous, with brown glandular dots when dry, base deeply cordate, margin shallowly 6-8-crenate on each side, apex rounded or acute. Flowers white or purplish; pedicels exceeding or subequaling leaves, 2-bracteolate above middle; bracteoles linear. Sepals lanceolate or ovate-lanceolate, 5-6 × 1.5-2 mm, apex acute, basal auricles short, margin narrowly membranous, apex truncate. Petals oblong-obovate, 7-8 mm, lateral ones bearded, anterior one shorter; spur saccate, short, 1.5-2 mm, ca. 2 mm in diam.; spur of anterior stamens oblong, short, subequaling anthers, ca. 2 mm. Ovary oblong, glabrous; styles clavate, base nearly erect, gradually thickened upward; stigmas conspicuously and broadly margined on lateral sides, beaked in front, beak upward and straight, short, stout, with large stigma hole at tip. Capsule oblong, 5-7 mm, glabrous. Fl. Mar-May and Sep, fr. May-Oct.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.07 - 0.1
Root system adventitious-root rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 6-11

Usage

Uses medicinal
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 davidii world distribution map, present in China and Myanmar

Identifiers

LSID urn:lsid:ipni.org:names:868004-1
WFO ID wfo-0001145164
COL ID 5BGMQ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Viola davidii Viola smithiana Viola davidii var. paucicrenata