FLORA OF VIETNAM Orchidaceae Paphiopedilum micranthum T.Tang et F.T.Wang
N. Vietnam, prov. Cao Bang, distr. Ha Lang, municipality Duc Quang, vicinities of Lung Hoai village (N 22°43′ E 106°40′), about 43 km to E from Cao Bang town. Primary open coniferous and mixed semideciduous forest (with Pinus kwangtungensis and Pseudotsuga brevifolia) along tops of remnant limestone ridge at 600-650 m alt. Epilite herb on vertical shadow cliffs of N and NW exposition. Leaves below heavily violet spotted, above with fine white - deep green tesselation. Not rare. Most typical habitat are narrow shelves below overhanging bluffs.
CBL 767 28 Nov. 1998
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)