Draba norvegica Gunnerus

Norwegian draba (en)

Species

Angiosperms > Brassicales > Brassicaceae > Draba

Characteristics

Perennials; (cespitose); caudex branched (sometimes with persistent leaf remains); often scapose. Stems branched or unbranched, (0.2-)0.4-1.4(-2) dm, pubescent throughout, trichomes simple and 2-4-rayed, 0.2-0.5 mm. Basal leaves rosulate; petiolate; petiole (0-0.5 cm), ciliate throughout; blade oblanceolate to narrowly obovate or narrowly lanceolate, 0.4-2.1 cm × 1.5-7 mm, margins with 1-3 teeth on each side, (ciliate, trichomes simple and 2-rayed, 0.2-0.8 mm), surfaces pubescent abaxially with stalked, (2-)4(-6)-rayed trichomes, 0.1-0.4 mm, adaxially glabrous or pubescent, with simple and stalked, 2-rayed trichomes, 0.1-0.5 mm. Cauline leaves 0-3(-5); sessile; blade ovate to oblong, margins often dentate, (ciliate). Racemes 5-23-flowered, ebracteate or proximalmost 1(-3) flowers bracteate, considerably elongated in fruit; rachis slightly or not flexuous, pubescent as stem. Fruiting pedicels suberect to ascending (often appressed to rachis), straight, (1.5-)2.5-5(-9) mm, pubescent, trichomes simple and 2-4-rayed. Flowers: sepals ovate, 1.7-2.5 mm, pubescent, (trichomes simple and short-stalked, 2-4-rayed); petals white, spatulate, 2.5-4 × 1.7-2.5 mm; anthers ovate, 0.3-0.4 mm. Fruits (sometimes subappressed to rachis), oblong to lanceolate-elliptic, plane, flattened, 4-8 × 2-3 mm; valves glabrous or pubescent, trichomes simple and short-stalked, 2-rayed, 0.05-0.25 mm; ovules 18-26 per ovary; style (0.01-)0.1-0.4(-0.5) mm, (glabrous, stigma about as wide as style). Seeds oblong, 0.9-1.2 × 0.5-0.7 mm. 2n = 48.
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Perennial; basal lvs oblanceolate to obovate, 1–2 cm; cauline lvs 1–5, ovate, 5–10 mm, rounded at base, the upper often subtending a fl; stems 1–2 dm; mature racemes dense, forming a third to half the total height of the pl; pedicels and frs ascending; pet white; frs oblong, elliptic, or lance-oblong, mostly 7–9 × 2.2–3.2 mm, veiny, glabrous or seldom sparingly stellate-puberulent; persistent style 0.1–0.3 mm, or virtually obsolete; 2n=48. Rocky ledges and cliffs; e. and ne. Can. and adj. U.S.; n. Europe; known in our range only from Cape Breton Isl. and Cook Co., Minn.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 0.15
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light 7-9
Soil humidity 1-5
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

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 -

Images

Draba norvegica unspecified picture
Draba norvegica unspecified picture

Distribution

Draba norvegica world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:282873-1
WFO ID wfo-0000655826
COL ID 37JBJ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Draba rupestris f. stellato-pilosa Draba hirta Draba proxima Draba clivicola Draba furcata Draba norvegica Draba rupestris Draba inferalpina Draba laxa Draba trichella Draba norvegica var. berlinii Draba norvegica var. clivicola Draba norvegica var. glabrata Draba norvegica var. hebecarpa Draba norvegica var. intermedia Draba norvegica var. laxa Draba scandinavica var. hebecarpa Draba hirta var. norvegica Draba hirta f. rupestris Draba rupestris f. glabriuscula Draba scandinavica Draba norvegica var. norvegica