Japan Flora: Pseu­dostem rather long; leaves 2, the petioles 2-3 and 5-12 cm. long respectively; leaflets 7-11, pedate, broadly oblanceolate, 7-12 cm. long, 2-3 cm. wide, long-acuminate; peduncle 2-3 cm. long; spathe green, the upper margins of tube recurved, the blade ovate to broadly so, 4-7 cm. long, abruptly short- acuminate, scarcely narrowed toward base, obliquely ascend­ing, densely yellowish, papillose inside; spadix-appendage nearly erect, narrowly cylindric, the upper part gradually nar­rowed to the abruptly thickened capitellate apex 2-3 mm. wide. Apr.-May. Woods; Honshu (Kinki Distr. and Kaga Prov.).

var. sugimotoi (Nakai) Kitam. Spathe-blade abruptly long-acuminate, nearly as long as the tubular part; spadix-appendage usually recurved above. Honshu (Tokaido Distr.).