FLORA OF VIETNAM Orchidaceae Appendicula hexandra(Koenig) J.J.Smith ?
Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Huong Nguyen Municipality, about 8 km to the N of Tra Ve forest protection station, around point 16°17′17′'N, 107°26′40′'E at elevation about 240 m a.s.l.
Secondary closed evergreen broad-leaved forest on steep hill and mountain slopes composed with shale along stream valley.
Epiphyte and lithophyte along deep shady narrow stream canyon. Flowers white. Locally very common.