Japan Flora: Stems epigeous, stout, terete, some­times more than 1 m. tall; leaves bright green, on a long stout sheathing petiole, the blade large, broadly ovate, to 60 cm. long, 50-60 cm. wide, acute, entire, cordate-sagittate at base, nearly peltate, with the basal sinus of lower margins slightly connate at base, the lateral nerves 9-12 pairs, the low­est pair nearly straight-reflexed; peduncles 15-20 cm. long; spathe greenish, the tube light green, oblong, 4-8 cm. long, the blade oblong, concave, acute, longer than the tube; spadix nearly as long as the spathe, the appendage narrowly conical.  Woods in low mountains.

Shikoku (s. distr.), Kyushu (s. distr.). Formosa, s. China, se. Asia, and Australia.