Japan Flora: Stems thick, terete, erect, 40-50 cm. long, often with loosely scattered long white hairs on upper part; leaves soft, broadly oblanceolate to oblong, 5-8 cm. long。1-2 cm. wide, obtuse to rounded, entire, the midrib thick and slightly raised beneath, the lateral nerves slender, the verticil­late leaves similar but shorter, the involucral leaves rounded to broadly ovate, 7-20 mm. long, rounded; inflorescence rather dense, yellowish, the glands of involucres reniform, about 2 mm. wide， yellowish; capsules about 6 mm. across, verrucose; seeds subglobose, smooth, about 3 mm. long. Apr.-May. Grassy places near rivers in lowlands.

Hokkaido, Honshu, Kyushu; common