Leaves elliptic-ovate to obovate, sometimes subcircular, 2-5.5 cm, base cuneate to rounded, margin entire to inconspicuously crenate, apex obtuse to rounded. Corolla 2.6-3 cm.

Used medicinally for bacterial dysentery and colds.

* Forests, thickets, rice paddy margins. Guizhou, Hubei, Sichuan