Japan Flora: Rhizomes short; sterns 40-80 cm. long, reclined above; leaves distichons, narrowly oblong-ovate, 7-17 cm. long, 2.5-5 cm. wide, lustrous above, glabrous, gradually acuminate, cordate and clasping with 2 basal auricles or the lower edges placed on each side of the stems, pale green beneath and subglabrous to sparsely hirsute on the nerves; flowers axillary and terminal, solitary to few, pendulous, 3-4 cm. long, tubular-campanulate, glabrous; tepals oblanceolate, clear yellow, with brownish purple dots inside, the outer ones with a short spur at base, short-mucronate.  Aug.-Oct. Mountains.

Honshu (Kii Prov.); rare. Occasionally planted in gardens.