FLORA OF VIETNAM Orchidaceae Dendrobium dentatum Seidenf.
Northern Vietnam, Ninh Binh Prov., Nho Quan Distr., Cuc Phuong Municipality, Cuc Phuong National Park, Dang locality, about 1 km WNW of Dang Forest Control point, 20°16′28′'N, 105°40′57′'. Secondary closed evergreen seasonal broad-leaved lowland forest on limestone hills at elev. about 400 m a.s.l. Lithophytic and epiphytic herb on top of hill. Flowers white, lip white with fine purple nerves on lateral sides and yellow central callus. Locally very common.