Japan Flora: Tuber nearly globose; leaves radical, on slender petioles 10-20 cm. long, broadly cordate- sagittate, 3-lobed, 5-10 cm. long and as wide, the lobes acute, entire, the middle one broadly ovate, the lateral smaller, di­varicate; scape radical, 4-8 cm. long; spathe 2.5-3 cm. long, the tube narrowly ovate, 15-18 mm. long, the blade elongate-rounded at base, gradually narrowed above to a sub­acute apex; neuter flowers linear, tlie upper ones ascending, the others reflexed, the appendage of spadix linear, erect, pur­plish, nearly uniformly wide from base to acute apex, some­what obliquely truncate at base. May-Aug.

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