Annual herb, spreading to erect, to 20 cm tall, with the stems often branched and intertwined, hairy; hairs simple and stellate. Basal leaves obovate, to 2 cm long, remotely dentate to entire; cauline leaves obovate, to 1.5 cm long, coarsely dentate to entire. Inflorescence dense, elongating from a corymb. Sepals 0.8–1.5 mm long, often cucullate, the laterals often lobed distally. Petals 0.7–1 mm long, clawed, emarginate or trilobed. Staminal filaments dilated at base. Nectariferous glands 4 or 6, 1 each side of lateral stamens, 0 or 1 between median stamens. Stigma capitate or obscurely bilobed, sessile or almost so. Silicula 3–4.5 mm long, cordate or cuneate; notch broad, shallow; valves winged in distal third; pedicels 2, rarely 4, mm long, spreading. Seeds 0.6–0.9 mm long, ellipsoidal.
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