Perennial herb from a slender taproot; stems erect or ascending with several ascending branches near the base, 25-70 cm tall, appressed-hairy.
Basal leaves egg- or spoon-shaped; stem leaves 10-20 mm long, 3-6 mm wide, lanceolate or oblanceolate, grey with starlike hairs.
Inflorescence elongate, flowers less than 2-3.5 mm in diameter; flower stalks spreading, 2-5 mm long; petals yellow, very narrow, 2-3 mm long; sepals about 2 mm long, soft-hairy and with starlike hairs, deciduous shortly after fruiting.
Silicles, 2-5.5 mm long, obtuse, nearly glabrous or hairy, the hairs starlike, strongly flattened; seeds 1 in each chamber; style about 0.5-2 mm long.
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