Distribution: East of the Cascades in Washington; widely distributed throughout central and western North America.
Habitat: Dry, open ground, often where disturbed.
Origin: Introduced from Eurasia
Conservation Status: Not of concern
Grayish, appressed-stellate annual or biennial, the stem simple to freely-branched, 1-2.5 dm. tall.
Inflorescence of elongate, bractless racemes; sepals 4, 2 mm. long, early-deciduous, with stellate and soft hairs on the back; petals 4, pale yellowish to creamy white, very narrow, 2-3 mm. long; pedicels spreading, equaling the fruit; stamens 6, the 2 shorter ones flanked by linear glands 1 mm. long; style 1 mm. long.
Silicles glabrous, ovate-oval, strongly compressed, 3-4 mm. long, slightly notched at the tip, flattened around the margins but bulged in the center over the 2 seeds per cell.