FLORA OF VIETNAM Orchidaceae Acampe rigida (Buch.-Ham. ex J.E.Smith) P.F.Hunt
N. Vietnam, prov. Cao Bang, distr. Thach An, about 25 km to SSE from Cao Bang town (N 22°27′ E 106°22). Primary evergreen closed semideciduous forest on tops of remnant limestone ridge at 500 m alt. Epilite shrub with shoots up to 1.5 m lg. Very common on open rock outcrops and cliffs at 300-500 m alt.
CBL 928 05 Dec. 1998
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)