Draba verna L.
common draba (common whitlow-grass; spring draba)
Brassicaceae (Mustard family)
Introduction to Vascular Plants
common draba (common whitlow-grass; spring draba)
Brassicaceae (Mustard family)
Introduction to Vascular Plants
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Species Information
General:
Annual herb from a slender taproot; stems leafless, 5-20 (25) cm tall, glabrous or hairy with simple and branched hairs near base.
Leaves:
Basal leaves in a rosette, spoon-shaped to oblanceolate, entire to toothed, 1-2.5 cm long, hairs simple, branched or starlike; stem leaves lacking.
Flowers:
Racemes 3- to 20-flowered; petals white, 3-4 mm long, deeply bilobed.
Fruits:
Silicles 3-10 mm long, 1.5-4 mm wide, elliptic to egg-shaped, glabrous; fruiting stalks 2-4 times as long as the silicles; style about 0.1 mm long; seeds 30-60, 0.3-0.5 mm long.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
Ecological Framework for Draba verna
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
| Site Information |
Value / Class |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
717 | 350 | 1737 |
| Slope
Gradient (%) |
23 | 0 | 73 |
|
Aspect (degrees) |
180 | 20 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
2 | 1 | 5 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
69 | ||
| Modal
BEC Zone Class |
BG | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BG(33), IDF(14), PP(20) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Dry disturbed areas and waste areas in the lowland, montane and steppe zones; locally frequent in SW BC, known from SE Vancouver Island, the Gulf Islands and the adjacent lower mainland, frequent in WC and SC BC; introduced from Eurasia.Status Information
Synonyms
Synonyms and Alternate Names:
Draba praecox Stev.
Draba verna var. aestivalis Lej.
Draba verna var. boerhaavii H.C. Hall
Draba verna var. major Stur
Erophila spathulata A.F. Lang
Erophila verna (L.) Besser
Erophila verna subsp. praecox (Stev.) S.M. Walters
Erophila verna subsp. spathulata (A.F. Lang) S.M. Walters