Japan Flora: Short-strigose, ascending to decumbent annual or biennial; stems 5-30 cm. long, tufted; leaves oblong or elliptic, 2-3 cm. long, 1-2 cm. wide, rounded and mucronate or obtuse, petiolate; bractea! leaves 5-15(-25) mm. long; pedicels supra-axillary, much shorter than the brae teal leaves and deflexed after anthesis; flowers pale blue, 2-3 mm. across; nutlets ellipsoidal, about 1.5 mm long, about 1 mm. across, densely callose- tubcrculate, the areole smooth-margincd. Mar.-Dcc. Sunny places in lowlands and hills.

Hokkaido, Honshu, Shikoku, Kyushu; common. Ryukyus, Formosa, China, Korea, Northeastern China, and sc. Asia.