Japan Flora: Glabrous green perennial; stems 25-50 cm. high, simple or forked above, erect, ascending above; leaves several, loosely disposed, ovate- oblong, 7-12 cm. long, 3-5 cm. wide, rather thin, smooth, 5- to 7-nerved, the upper ones larger, caudately acuminate, rounded at base, sessile, the nerves slender, with about 3 vein- lets between them; flowers 1-3, in terminal sessile umbels, the pedicels 1-1.5 cm. long, slender, the tepals yellowish, about 1.5 cm. long, obliquely spreading, lanceolate, acute with an obtuse tip, 12-15 mm. long, 3-4 mm. wide, distinctly papillose inside and on margin near base; stamens about as long as the tepals, the anthers about 3 mm. long, the filaments about 4 mm. long; ovary obovoid, the style about twice as long as the ovary. May-Junc. Mountains;

Honshu (Mt. Koyasan in Kii), Kyushu; rare.