Herbs annual, (4.5-)15-30(-45) cm tall, sparsely to densely pubescent with short-stalked, forked or subdendritic trichomes sometimes mixed with simple subsetose ones, rarely glabrescent. Basal leaves soon withered, not rosulate. Middle and lower cauline leaves petiolate; petiole (0.1-)0.6-2(-3) cm; leaf blade elliptic, oblong, or oblanceolate, (0.5-)1.5-6(-10) × (0.3-)1-2.5(-3.5) cm, base cuneate, margin entire or dentate, rarely sinuate, apex acute; uppermost leaves smaller and subsessile. Racemes few to many flowered, elongated considerably in fruit; rachis straight or slightly flexuous. Fruiting pedicels thickened, as wide as fruit, 0.5-2(-4) mm. Sepals (3.5-)4-5 × 0.5-0.7 mm, caducous or persistent. Petals pink or purple, rarely white, narrowly oblanceolate, (6.5-)8-10(-12) × 1-2 mm. Filaments free, 2.5-5 mm; anthers narrowly oblong, 0.9-1.1 mm. Fruit linear, straight, quadrangular, not torulose, (2.5-)3.5-5.5(-7) cm × 1-1.3 mm; valves not veined, pubescent with coarse, forked trichomes mixed with much smaller, forked and subdendritic ones or subsetose simple ones, rarely glabrous; style obsolete; stigma conical, to 1 mm. Seeds oblong, 1-1.2 × 0.5-0.6 mm. Fl. Apr-Aug, fr. May-Oct.
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