Draba simmonsii Elven & Al-shehbaz

Species

Angiosperms > Brassicales > Brassicaceae > Draba

Characteristics

Perennials; caudex branched (with persistent leaf bases and petioles); scapose. Stems unbranched, (0.15-)0.3-1.1 (-1.3) dm, often pubescent throughout, sometimes sparsely pubescent distally, trichomes stalked, 2-4-rayed, and fewer, simple ones, 0.1-0.3(-0.6) mm. Basal leaves (not imbricate); rosulate; petiolate; petiole (base somewhat thickened), margin ciliate, (trichomes simple, 0.5-1 mm); blade oblong to oblong-lanceolate, 0.5-1.6 cm × 2-5 mm, margins entire (apex subacute to obtuse), surfaces pubescent throughout or glabrous adaxially, with simple and stalked, 2-4 (-6)-rayed, stellate to subdendritic trichomes. Cauline leaves 0. Racemes (2-)4-10(-14)-flowered, ebracteate, slightly elongated in fruit; rachis not flexuous (straight), pubescent as stem. Fruiting pedicels divaricate, straight, 2.5-10 mm, pubescent as stem. Flowers: sepals (purplish green), oblong, (2.5-)2.8-3.5(-3.8) mm, pubescent, (trichomes simple and sometimes short-stalked, 2-rayed); petals pale yellow, narrowly obovate, (sides non-parallel), (3.5-)3.8-5.5(-5.8) × (2.5-)2.8-4(-4.6) mm, (emarginate); anthers ovate, ca. 0.5 mm. Fruits lanceolate, plane, slightly flattened, 5.5-9(-11) × 2.3-3.8 mm; valves pubescent, trichomes simple, sometimes with fewer, 2-rayed ones, 0.1-0.3 mm; ovules 16-24(-28) per ovary; style 0.1-0.3 mm (stigma as wide as style). Seeds (dark brown), oblong-ovate, 1-1.3 × 0.7-0.8 mm.
Life form perennial
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
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 simmonsii world distribution map, present in Canada

Identifiers

LSID urn:lsid:ipni.org:names:60449088-2
WFO ID wfo-0000509109
COL ID 37JGL
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Draba simmonsii Draba alpina var. gracilescens