N. Vietnam, prov. Cao Bang, distr. Nguyen Binh, municipality Ca Thanh
(N 22°44′ E 105°50′). Primary semideciduous mixed forest along tops of remnant karst limestone ridge at 1350-1400 m elev. Deciduous tree up to 15 m hg. Flowers pale green. Common. Usual codominante of 1 forest stratum along tops of limestone ridges all over the Cao Bang area.
CBL 1316 13 April 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)