Arabidopsis thaliana

Annual herbs to 50 cm high, often several-stemmed. Basal leaves spathulate, obovate, ovate, or elliptic, 8–35(–45) mm long, (1–)2–12(–15) mm wide, margin entire or lobed; stem leaves subsessile, lanceolate, linear, oblong, or elliptic, smaller than basal leaves, usually entire. Sepals 1–2(–2.5) mm long, equal; petals white, 2–3.5 mm long. Fruit linear, 10–25 mm long, glabrous; valves with distinct midvein; style c. 0.5 mm long; pedicles spreading, to 10 mm long; seeds ellipsoid, c. 0.5 mm long.