Japan Flora: Tuber depressed-globose; pseudostem 20- 60 cm. long; leaves 2, the petioles 7-20 cm, long; leaflets 7-11, oblong to narrowly so, abruptly acuminate, the terminal one 10-20 cm. long, 2.5-6 cm. wide; peduncles 10-15 cm. long; spathe with the upper margin of the tube broadly auriclcd, the blade ovate, acuminate, bent forward and arching over the spadix, dark purple with longitudinal white stripes; spadix­appendage cylindric, slightly thickened at both ends, rounded at apex, truncate at base.  Apr.-May.

Honshu (Kanto and northw., incl. Oshima in lzu).

Arisaema aequinoctiale Nakai & F. Maekawa. Closely related to A. limbatum, A stout plant with elliptic leaflets gradually at­tenuate below and occasionally strongly toothed on margin. Honshu (Boso Penin.).