FLORA OF VIETNAM Orchidaceae Dendrobium hercoglossum Rchb.f. ?
Vietnam, Thua Thien – Hue Prov., Huong Thuy Distr., Duong Hoa Municipality, Huong Thuy forest enterprise territory, around point 16°13′23′'N, 107°35′16′'E, SW slopes of Mang Chan ridge at elevation about 350-500 m a.s.l.
Fractionally logged primary closed evergreen broad-leaved forest along steep slopes composed with shale with quartzite.
Lithophytic herb on vertical mossy cliffs along wet deep shady rocky stream canyon. Not common.