Annuals, (14-)30-60 cm tall. Stems erect, simple or branched, puberulent with forked and bifurcate trichomes 0.05-0.08(-0.1) mm, rarely glabrous above. Leaves pinnatisect; petiole 2-7 mm; leaf blade oblong, 0.6-3 × 0.4-1.5(-2.3) cm, puberulent with minute, simple and forked trichomes, rarely glabrescent; terminal lobe oblong, 3-15 × 1-5 mm, base cuneate, margin serrate or subentire, apex acute; lateral lobes 1-3 pairs, 1.5-13 × 0.5-3 mm. Racemes paniculate; rachis straight or rarely flexuous. Fruiting pedicels divaricate or ascending, slender, straight, 5-10 mm, pubescent or glabrous. Sepals oblong, 1-1.6 × 0.5-0.7 mm, white at margin and apex. Petals white or rarely pinkish, 1.5-2 × 0.7-1 mm. Filaments 1.1-1.2 mm; anthers oblong, ca. 0.2 mm. Ovules 16-20 per ovary. Fruit oblong, ellipsoid, or ovoid, plump, (2-)2.5-4 × 0.9-1.6 mm; valves with distinct midvein and reticulate veins, glabrous; style 0.1-0.5 mm. Seeds dark brown, ovate, 0.6-0.9 × 0.4-0.6 mm, reticulate. Fl. and fr. Jul-Aug.
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