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

Draba oligosperma Hook.
few-seeded draba (fewseed draba; few-seeded whitlow-grass)
Brassicaceae (Mustard family)

Introduction to Vascular Plants

General:
Densely tufted perennial herb from a taproot; stems, branched, 1-10 cm tall, glabrous or starlike-hairy near base.

Leaves:
All basal, narrowly oblanceolate to oblong, 3-12 mm long, 0.7-1.7 mm wide, hairy with 4-rayed, starlike hairs with the rays branched, margins hairy with starlike hairs, starlike hairs on lower leaf surfaces unstalked with mostly 9 or more rays, slightly V-shaped in cross section, midribs prominent and often persistent; stem leaves lacking.

Flowers:
Racemes 3- to 15-flowered; flower stalks 2-10 mm long, ascending, glabrous; petals yellow, 3-5 mm long; sepals 2-2.5 mm long, sparsely soft-hairy.

Fruits:
Silicles, 3-8 mm long, 2-4 mm wide, egg-shaped to lanceolate or oval, plane, glabrous or hairy; styles 0.2-1 mm long; seeds 2-10, 1.4-1.8 mm long.

Source: The Illustrated Flora of British Columbia

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

Ecological Framework for Draba oligosperma

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
Site Information	Avg	Min	Max
Elevation (metres)	1961	5	2565
Slope Gradient (%)	30	3	85
Aspect (degrees) [0 - N; 90 - E; 180 - S; 270 - W]	246	27	340
Soil Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric]	2	1	5
Modal Nutrient Regime Class	B
# of field plots species was recorded in:	34
Modal BEC Zone Class	AT
All BEC Zones (# of stations/zone) species was recorded in	AT(13), BAFA(7), ESSF(11), IMA(1)
Source: Klinkenberg 2013

Origin Status	Provincial Status	BC List (Red Blue List)	COSEWIC
Native	S5	Yellow	Not Listed

BC Ministry of Environment: BC Species and Ecosystems Explorer.

Synonyms and Alternate Names:
Draba juniperina Dorn
Draba oligosperma subsp. subsessilis (S. Watson) A.E. Murray
Draba oligosperma var. juniperina (Dorn) S.L. Welsh
Draba oligosperma var. oligosperma
Draba oligosperma var. pectinipila (Rollins) C.L. Hitchc.
Draba oligosperma var. subsessilis (S. Watson) O.E. Schulz
Draba pectinipila Rollins
Draba subsessilis S. Watson

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