FLORA OF VIETNAM Orchidaceae Dendrobium kontumense Gagnep. (D. virgineum auct.)? Vietnam, Thua Thien – Hue Prov., A Luoi Distr., A Roang Municipality, Tra Lenh Forestry Department station, around point 16°04′41′'N, 107°29′06′'E.
Primary closed evergreen broad-leaved forest on very steep mountain slopes composed with shale, sandstone and granite at elevation 700-800 m a.s.l.