Japan Flora: Annual, slightly white-mealy on young parts and underside of leaves; stems 30-60 cm. long; leaves green, deltoid-oblong or narrowly deltoid-ovate, 2-5 cm. long, 1-3 cm. wide, obtuse, cuneate at base, deeply undulate-toothed, the lowest pair of teeth lobelike, the petioles slender; fascicles of flowers subinterrupted, forming a dense panicle; sepals obovate, about I mm. long, obtuse, green on back, the midrib raised; seeds black, about 1 mm. across, discoid, with obtuse margin. June-Aug. Hokkaido, Honshu, Kyushu; rather common in waste ground and along roadsides in lowlands.

Europe to w. Siberia.