Japan Flora: Annual; stems tufted, 10-30 cm. long, terete, slender; leaves more or less compressed, channeled; flowers solitary, 5-6 mm. long, forming a terminal large concave cyme, the bract leafy, much shorter than the inflorescence; perianth-segments whitish green, narrowly lanceolate, acuminate, the outer caudate; stamens 6, about half as long as the perianth-segments, the anthers l/S-1/2 as long as the filaments; capsule oblong, tawny, shorter than the perianth; seeds obovate-elliptic. June-Oct. Wet sandy places.

Hokkaido, Honshu, Shikoku, Kyushu. Cosmopolitan.