FLORA OF VIETNAM Orchidaceae Dendrobium longicornu Lindl.
N. Viet Nam. Ha Giang Province, Quang Ba District, Bat Dai Son village. Primary forest on limestone with Quercus, Pseudotsuga and Podocarpus along Chung Ti Tei ridge at elev. 1100-1260 m, 28°08′11″N, 105°00′48″E. Frequent epiphyte. Stems with dark brown hairs.