N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Yen Lac, vicinities of Yen Lac village (N 22°44′ E 105°50′), about 44 km to NWW from Cao Bang town. Primary broadleaved forest remnants along stream on alluvial walley among limestone ridges at 1100 m alt. Terrestrial and epilite herb up to 0.8 m hg in shadow place along stream at 1100 m alt. Ripe fruits red. Not common.
CBL 574 18 Nov. 1998
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)