E-Flora BC: Electronic Atlas of the Flora of British Columbia

Draba nivalis Lilj.
snow draba (snow whitlow-grass; yellow arctic draba)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Ryan Batten  Email the photographer   (Photo ID #25816)

E-Flora BC Static Map
Distribution of Draba nivalis
Click here to view the full interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.



General:
Tufted perennial herb from a taproot; stems branched, 3-12 (20) cm tall, starlike-hairy.
Leaves:
Usually all basal, oblong-egg-shaped, 0.5-1.5 cm long, 1-4 mm wide, greyish-hairy with overlapping starlike hairs, margins with all starlike hairs or with only simple hairs near base, midribs prominent and persistent; stem leaves absent or sometimes 1.
Flowers:
Racemes 3- to 12-flowered; flower stalks 1-6 (11) mm long, ascending to erect, grey-hairy with starlike hairs; petals white, 2.5-4 mm long; sepals 1.5-2 mm long, glabrous or hairy.
Fruits:
Silicles, 5-12 mm long, 1-2 mm wide, lance-linear to oblong or lance-oblong, plane to contorted, glabrous; styles 0.2-0.5 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry meadows, rocky slopes and scree slopes in the subalpine and alpine zones; infrequent throughout BC; N to AK, YT and NT and E to NF.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Draba nivalis

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

Minimum

Average

Maximum

Elevation (metres) 5 1419 1990
Slope Gradient (%) 0 17 85
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 277 337
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 2 4
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
26
Modal BEC Zone Class
BAFA
All BEC Zones (# of stations/zone) species was recorded in: BAFA(20), ESSF(4)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Draba nivalis var. thompsonii C.L. Hitchc.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References