Draba oreodoxa W.W.Sm.

Species

Angiosperms > Brassicales > Brassicaceae > Draba

Characteristics

Herbs perennial, 5-24 cm tall, cespitose. Caudex few to many branched, with petiolar remains of previous years, ultimate branches terminated in rosettes. Stems erect to decumbent, simple, sparsely to densely pubescent with a mixture of simple, forked, and stellate trichomes, apically tomentose with appressed stellate ones. Basal leaves rosulate, persistent; petiole to 1 cm, base often persistent; leaf blade obovate, spatulate, to narrowly oblanceolate, 0.4-2 cm × (2-)3-7 mm, abaxially pubescent with subsessile, 4(or 5)-rayed, soft, fine stellate trichomes, adaxially with a mixture of primarily simple trichomes with fewer stellate and forked ones, sometimes trichomes restricted to leaf margins and midvein, base cuneate, margin entire or denticulate, apex obtuse or rounded. Cauline leaves 3-7, sessile; leaf blade narrowly oblong, oblanceolate, or ovate, 0.5-2 cm × (1.5-)2.5-5(-7) mm, pubescent as basal leaves, base obtuse, not auriculate, margin entire or denticulate, apex obtuse. Racemes 12-35-flowered, bracteate basally to beyond middle, elongated in fruit. Fruiting pedicels (0.4-)0.6-1.5 cm, divaricate, straight or slightly curved, glabrous adaxially, pubescent abaxially with stellate trichomes. Sepals ovate, 2-3 × 1-1.7 mm, ascending, abaxially sparsely pilose with primarily simple trichomes, base of lateral pair subsaccate, margin membranous. Petals yellow, obovate, (3.5-)4-6(-7) × 2-3(-4) mm, apex emarginate; claw to 1 mm. Filaments 1.5-3 mm; anthers ovate, 0.4-0.6 mm. Ovules (5-)8-12 per ovary. Fruit ovate, 4-7 × 3-5 mm, latiseptate, sometimes slightly twisted; valves glabrous; style ca. 0.5 mm. Seeds brown, ovate, 1.3-1.8 × 1-1.3 mm. Fl. and fr. Jun-Aug.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 0.24
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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) 30 - 90
Germination temperacture (C°) 12
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
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Vigor -
Productivity -

Distribution

Draba oreodoxa world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:282905-1
WFO ID wfo-0000655893
COL ID 37JCF
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Draba dolichotricha Draba ludingensis Draba oreodoxa