Draba gracillima Hook.F. & Thomson

Species

Angiosperms > Brassicales > Brassicaceae > Draba

Characteristics

Herbs perennial, 5-55 cm tall, slender. Caudex with several slender branches terminated in rosettes. Stems decumbent, simple, very slender, somewhat flexuous, basally sparsely pubescent with short-stalked, 3-or 4-rayed, stellate trichomes, rarely densely pilose with primarily simple trichomes, apically glabrous. Basal leaves rosulate, persistent; petiolelike base to 7 mm; leaf blade broadly obovate, spatulate, to oblanceolate, 0.5-2 cm × 1.5-7(-10) mm, abaxially sparsely pubescent with short-stalked, 4-rayed stellate trichomes rarely mixed with more, simple and forked ones, abaxially pilose with simple trichomes replaced with forked or stellate ones at leaf apex, rarely blade glabrous except for margin, base cuneate to attenuate, margin denticulate or subentire, often ciliate, apex subacute or obtuse. Cauline leaves 2-6, sessile, ovate, 2-7 × 1-3 mm, pubescent as basal leaves, base obtuse, not auriculate, margin entire or denticulate, apex acute. Racemes 3-10(-12)-flowered, ebracteate or lowermost flowers bracteate, lax, elongated considerably in fruit. Fruiting pedicels 0.4-4 cm, filiform, glabrous, lowermost longest and strongly recurved, uppermost straight and ascending. Sepals oblong, 1.5-2 × 0.6-1.5 mm, erect, glabrous or rarely with a few trichomes, not saccate, margin narrowly membranous. Petals pale yellow or yellowish white, narrowly obovate to oblanceolate, 2.5-3.5 × 0.8-1.5 mm, apex obtuse or subemarginate; claw absent. Filaments 1.2-2 mm; anthers ovate, 0.2-0.4 mm. Ovules 10-20 per ovary. Fruit narrowly oblong, linear, or linear-lanceolate, (0.5-)0.7-1.3(-1.8) cm × 1-2 mm, pendulous, latiseptate, not twisted; valves glabrous, not veined; style 0.2-0.5 mm. Seeds brown, ovate, 0.9-1.1 × 0.5-0.7 mm, subcompressed, wingless. Fl. and fr. May-Aug.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.18 - 0.43
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) 7-11

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°) -
Size -
Vigor -
Productivity -

Distribution

Draba gracillima world distribution map, present in Bhutan, China, India, Nepal, and Pakistan

Identifiers

LSID urn:lsid:ipni.org:names:282622-1
WFO ID wfo-0000655384
COL ID 37J54
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Draba granitica Draba nepalensis Draba wardii Draba gracillima