Japan Flora: Tuber nearly globose, with several small lateral tubers; leaf al­ways solitary, the petiole terete, 15-40 cm. long; leaflets 7-13, lanceolate, long-acuminate, 10-20 cm. long and 2-4 cm. wide in the terminal one; scape arising near base of petiole, 5-15 cm. long; spathe uniformly dark purple, the blade broadly ovate, strongly arching over the spadix, abruptly narrowed to a long cusp, with a white T-shaped mark inside; spadix-ap­pendage slender, long-exserted, 15-18 cm. long, pendulous at tip, thickened below and passing into the floriferous part. May-June. 

Kyushu