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 120-300 m a.s.l.
Secondary closed evergreen broad-leaved forest on steep hill and mountain slopes composed with shale.
Terrestrial herb up to 2 m tall. Sepals light yellow, lip bright yellow with median red stripe. Common.