Japan Flora: Delicate annual, 5-15 cm. high; stems often branched at base, leafy to the apex, loosely granu- lar-puberulent on upper part; leaves of few pairs, spreading, lanceolate to broadly linear, 3-8 mm. long, 1-2 mm. wide, acute to acuminate, mucronate, obsoletely 1-costate, glabrous; flowers white, about 2.5 mm. across, the pedicels 7-20 mm. long; capsules globose, bifid; style about 2.5 mm. long. Aug.-Oct. Wet grassy places in lowlands.

Honshu, Shikoku, Kyushu. Ryukyus, Formosa, China, India, Malaysia, and Australia.