FLORA OF VIETNAM Orchidaceae Bulbophyllum purpurifolium Aver.
N. Vietnam, Bac Can prov., Na Ri distr., Kim Hy municipality, vicinities of Lung Hin Con village (N 22°17′ E 106°03′), 27 km to 55° of Bac Can city. Remnants of primary mixed evergreen dry open forest with Pseudotsuga brevifolia and bamboo along tops of remnant karst limestone ridge at elev. about 800 m a.s.l. Lithophytic and epiphytic vine up to 3 m lg. Leaves below deep violet. Not rare.