Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Huong Nguyen Municipality, in vicinities of Tra Ve forest protection station, around point 16°13′47′'N, 107°27′47′'E at elevation about 80-120 m a.s.l.
Secondary closed evergreen broad-leaved forest on steep hill and mountain slopes composed with shale along stream valley.
Creeping terrestrial herb in open wet sandy place along shady wet rocky stream valley. Flowers light violet. Common.