General:
Tufted perennial from a heavy-rooted, often branched stem-base; stems numerous, decumbent, 2-17 cm long, with silvery starlike hairs, these not closely appressed.
Leaves:
Basal leaves numerous, in a rosette, withering and persistent, 2-8 cm long, blades egg-shaped, mostly obtuse, with few inconspicuous teeth or toothed, rarely entire, with narrow to wide winged stalks, these about as long as the blades, silvery; stem leaves several, reduced, oblanceolate, entire or with occasional tooth.
Flowers:
Racemes congested, elongating in fruit; flower stalks spreading, straight or slightly curved, 8-12 mm long; petals yellow, 9-12 mm long, broadly spoon-shaped or egg-shaped.
Fruits:
Silicles, paired, much-inflated, 1-2 cm long, at least as wide, base very slightly heart-shaped, apical sinus narrow, nearly closed, 2-4 mm deep, loosely hairy with rays of hairs spreading; beaks 6-9 mm long; seeds 2-3 per chamber.
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
Synonyms and Alternate Names:
Physaria didymocarpa (Hook.) A. Gray