UW Burke Herbarium species comparison

Leaves rather fleshy, the basal ovate to deltoid-lanceolate, 1-4.5 dm. long, long-petiolate, sharply and deeply lobed;

cauline leaves alternate, numerous, reduced upward, pinnatifid to nearly entire.

Inflorescence of bractless, elongate racemes; pedicles stout, 2-5 mm. long, spreading;

sepals 4, erect, 3.5-7 mm. long, greenish-white to purplish, sometimes saccate at the base;

petal 4, white, 6-20 mm. long, linear to narrowly spatulate;

stamens 6, the filaments flattened, distinct, shorter than the sepals;

style 1-3 mm. long.

Siliques spreading, straight to strongly curved, 4-14 cm. long and about 1 mm. thick, on a stipe 1-4 mm. long;

seeds in 1 series.