Japan Flora: Gla­brous annual; stems erect, branched from base, 30-50 cm. long; leaves broadly linear or linear-lanceolate, 2-4 cm. long, 4-6 mm. wide, obtuse to subacute, obliquely rounded at base, toothed, the midrib prominently raised beneath, impressed above, the lateral nerves pinnate, inconspicuous; cymes axillary, dense, the cyathia glabrous, the glands white, semirounded; capsules glabrous, smooth, slightly less than 2 mm. across, ob­tusely angled, the styles short, erect; seeds obovoid, about 1 mm. long, obtusely 3-ridged, with about 3 transverse wavy lines.  July-Oct. Waste grounds and cultivated fields inlowlands.

Kyushu (Tanegashima). Ryukyus, Formosa, s. China, and Malaysia.