Japan Flora: Pseudostem 30-70 cm. long, from a hemispherical tuber; leaves 2, the petiole 7-20 cm. long； leaf­lets 11-19, pedate, linear or linear-oblanceolate, die terminal one 8-17 cm. long, 15-20 mm. wide; spathes dimorphic, the pistillate with a green tube about 8 cm. long, ampliate in upper part, the blade broadly ovate, 7 cm. long, short-acumi­nate, the spadix-appendage 6.5 cm. long, narrowly clavate- cylindric, an erect stipe about 6 cm. long; staminate spathe tubular, 7 cm. long, 5 mm. across, the spadix-appendage capitate at apex, on a stipe 7 cm, long.       

Reported to occur in Kyushu (Yakushima) Ryukyus, from Amami-Oshima to Okinawa.