FLORA OF VIETNAM Orchidaceae Juss. Dendrobium dentatum Seidenf.
N. Vietnam, Thanh Hoa prov., Ba Thuoc distr., Co Lung municipality, territory of Pu Luong protected area, near Co Lung village (20°27′28′'N, 105°12′18′'E). Primary broad-leaved evergreen forest on tops of remnant highly eroded karst limestone ridge at elev. 550-600 m a.s.l. Lithophytic herb on mossy shady rocks. Flowers white, lip white, sidelobes with finest purple-violet stripes. Very common. Locally abundant.