Japan Flora: Plant sparsely puberulent; stems 30-60 cm. long, branched, soft; leaves thinly membranous, ovate or elliptic-ovate, 6-10 cm. long, 3-5 cm. wide, acuminate or abruptly short-acumi­nate, rounded to cuneate at base, green, usually with few ir­regular coarse teeth, the petioles winged in upper part; flowers 1 or 2 in leaf-axils, pendulous, white, 7-8 mm. long, the pedi­cels glabrous, 1-2 cm. long; calyx 3-4 mm. long at anthesis， ovoid-globose, 12-15 mm. long in fruit, loosely pilose on the prominent winglike ribs; fruit globose, about 1 cm. across, loosely enclosed by the persistent, membranous, 10-ribbed calyx. Aug.-Oct. Woods.

Honshu (Kanto Distr. and westw.), Shikoku, Kyushu.