Japan Flora: Perennial with more or less curved hairs; stems slender, elongate and branched, scandent, loosely leafy; lower leaves lanceolate to broadly lanceolate, 4-5 cm. long, 1-2 cm. wide, gradually acuminate, shallowly cordate to some­times rounded at base, the petioles 7-15 mm. long; upper leaves 1-5 cm. long, 5-15 mm. wide, usually rounded at base, the petioles 3-10 mm. long; inflorescence umbellike, simple or sometimes few-branched, nearly sessile or short-pedunculate, the pedicels 7-10 mm. long; flowers 6-8 mm. across, dark purple; corolla-lobes lanceolate, gradually narrowed and ob­tuse, minutely puberulent inside at base; corona-lobes about half as long as the gynostegium, ovate-deltoid; follicles usually solitary, lanceolate, 5-7 cm. long, 6-7 mm. wide; seeds broadly ovate, very narrowly winged, about 6 mm. long. July-Sept. Thickets in hills and low mountains;

Honshu (Kanto Distr. westw. to Kinki).

var. albiflorum (Fr. & Sav.) H.Hara. Flowers white. Occurs with the typical phase.

var. macranthum (Maxim.) Matsum. Slightly larger in every respect; flowers 10-20 mm. across, light yellow. Occurs with the typical phase.

var. auriculatum (Fr. & Sav.) Matsum. Petioles in lower leaves 8-15 mm. long; flowers dark purple; corona-lobes rather depressed. Aug. Honshu (centr. distr. and Kanto).