Draba olgae Regel & Schmalh.

Species

Angiosperms > Brassicales > Brassicaceae > Draba

Characteristics

Herbs perennial, 3-15(-20) cm tall, loosely cespitose, scapose. Caudex few branched, ultimate branches terminated in rosettes and covered with leaf remains of previous years. Stems erect, simple, lowermost part sparsely pubescent with stellate or simple and forked trichomes, glabrous elsewhere or throughout. Basal leaves rosulate, persistent; petiole 1-4 mm, ciliate with simple trichomes; leaf blade oblong-obovate, oblanceolate, oblong, or lanceolate, (0.4-)0.7-1.5(-2.5) cm × 1.5-3(-6) mm, abaxially moderately to densely hirsute with simple, 3-5-rayed stellate trichomes 1 or 2 rays of which sometimes with a lateral branch, these sometimes mixed with fewer simple trichomes, adaxially with primarily simple trichomes sometimes mixed with smaller, fewer stellate ones, margin ciliate with setose or subsetose trichomes to 1 mm, base cuneate to rarely attenuate, margin entire or rarely 1-or 2-toothed, apex obtuse to acute. Cauline leaves absent. Racemes (6-)10-25(-35)-flowered, ebracteate, elongated considerably in fruit. Fruiting pedicels 5-12 mm, divaricate to ascending, straight, glabrous. Sepals oblong-ovate, 2-3 × 1-1.5 mm, erect, glabrous or abaxially sparsely pubescent with simple and forked trichomes, base of lateral pair not saccate, margin narrowly membranous. Petals pale yellow, turning whitish, broadly obovate, (4-)5-7 × 2-3.5 mm, apex subemarginate; claw ca. 1 mm. Filaments 2-2.5; anthers ovate-cordate, 0.3-0.4 mm. Ovules 10-16 per ovary. Fruit elliptic to lanceolate-elliptic, (3-)4.5-8 × (1.5-)2-3 mm, not inflated, latiseptate, not twisted; valves puberulent with simple trichomes sometimes mixed with much fewer forked ones, not veined, base and apex acute; style 0.5-1 mm. Seeds brown, ovate, 1-1.3 × 0.7-0.9 mm. Fl. Jun-Jul, fr. Jul-Aug.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.03 - 0.14
Root system -
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 -
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 olgae world distribution map, present in China, India, Sri Lanka, and Pakistan

Identifiers

LSID urn:lsid:ipni.org:names:282894-1
WFO ID wfo-0000655859
COL ID 37JC5
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Draba olgae Draba olgae subsp. olgae Draba olgae subsp. chitralensis Draba olgae var. chitralensis