Draba alajica Litv.

Species

Angiosperms > Brassicales > Brassicaceae > Draba

Characteristics

Herbs perennial, 3-15 cm tall, densely cespitose, scapose. Caudex few to many branched, ultimate branches terminated in rosettes and covered with leaves of previous years. Stems erect, simple, sparsely tomentose proximally, glabrous or glabrescent distally, rarely sparsely with stellate trichomes. Basal leaves rosulate, persistent; petiole to 6 cm; leaf blade oblong or oblong-spatulate, rarely linear-oblong, (0.3-)0.6-1.7(-1.9) cm × 1.5-4 mm, densely tomentose with 4-6-rayed stellate trichomes 1 or more rays of which forked or with a lateral branch on each side, base attenuate or cuneate, margin entire, apex obtuse. Cauline leaves absent or rarely 1, sessile; leaf blade oblong, tomentose as basal leaves, margin entire, apex obtuse. Racemes 5-18(-20)-flowered, ebracteate, elongated in fruit. Fruiting pedicels (0.5-)0.7-1.5 cm, ascending to subdivaricate, straight, glabrous or rarely sparsely tomentose all around. Sepals ovate or oblong, 2-3 × 1-1.5 mm, erect, abaxially sparsely tomentose with stellate trichomes, base of lateral pair not saccate, margin narrowly membranous. Petals yellow, obovate, 4.5-6 × 2-3 mm, apex subemarginate or rounded. Filaments 2-3 mm; anthers oblong, 0.5-0.6 mm. Ovules 10-16 per ovary. Fruit linear-lanceolate to oblong-linear, (0.5-)0.7-1.3 cm × 1.5-2 mm, not inflated, latiseptate, not twisted or slightly twisted; valves puberulent with predominately simple and fewer forked trichomes, not veined, base obtuse, apex subacute; style 0.7-1.5 mm. Seeds brown, oblong, ca. 1 × 0.6 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) 0.03 - 0.15
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°) -
Size -
Vigor -
Productivity -

Distribution

Draba alajica world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:282322-1
WFO ID wfo-0000654861
COL ID 37HVV
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Draba alajica Draba oreades var. tafellii Draba winterbottomii var. stracheyi Draba alajica var. lasiocarpa Draba alajica var. leiocarpa