General:
Biennial or short-lived perennial herb from a slender taproot and a usually simple stem-base; stems simple or branched, 3-32 cm tall, hairy below mainly with crosslike hairs, commonly glabrous above.

Leaves:
Basal leaves 10-25, 0.4-3 cm long, 1.5-9 mm wide, in a rosette, egg-shaped to oblanceolate, slightly minutely toothed or entire; stem leaves absent or 1-2 or sometimes as many as 4, elliptic to widely lanceolate, toothed or entire, 0.3-1.6 cm long, 2-10 mm wide; upper leaf surfaces with simple and short-stalked 2-branched, 3-branched, and crosslike hairs (mostly 2-branched or crosslike); undersurface of leaves with short-stalked 2-branched and crosslike hairs.

Flowers:
Racemes 2- to 15-flowered, open, often compound; flower stalks 3-15 mm long, commonly glabrous, seldom hairy, ascending; petals 3-3.5 mm long, yellow; sepals 1.5-2.5 mm long, soft-hairy or glabrous.

Fruits:
Silicles 10-20 mm long, 1.5-2 mm wide; narrowly elliptic to narrowly egg-shaped, plane, glabrous or rarely hairy; style to 0.1 mm long; seeds 16-40, oval, light brown, 1 mm long. vol2_4

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