Japan Flora: Resembles A. devilis; plant glabrous; leaves cordate or broadly ovate-cordate, 4-10 cm. long, 3.5-8 cm. wide, acute or obtuse, cordate, thinly membranous, glaucescent, the petioles 1- 7 cm. long; flowers few in axils, fascicled, the pedicels 1-4 cm. long; calyx-tube inflated and globose at base, the limb dilated, obliquely truncate, narrowly deltoid, long-acuminate to a filiform point; fruit obovoid-globose, about 3 cm. long. July-Aug.

Honshu. Korea, n. China, Manchuria, and Ussuri.

Russia Flora: Plant up to 1 m tall. Rhizome horizontal, elongated, dense. Leaves cordate, up to 10 cm long, 8 cm wide, thin, glossy; petiole up to 4 cm long. Flowers arranged in clusters in leaf axils, light yellow, up to 3 cm long, with oblique limb, extended into narrowly deltoid, almost filiform apex. Fruit — ovoid-globose capsule up to 3 cm long. Seeds flat, 5—6 mm in diameter, dark chestnut, light along margins. (Plate III).

Ussuri (south). (Fig. 7). — In river valleys, mainly in willow thickets, in lower parts of slopes, on forest edges. VII—IX. — General distribution: Japanese-Chinese. — Described from PRC.