N. Vietnam, prov. Cao Bang, distr. Nguyen Binh, municipality Ca Thanh (N 22°44′ E 105°50′). Primary broadleaved evergreen forest on slopes of remnant karst limestone ridge at 1200-1300 m elev. Evergreen tree up to 15 m hg. Flowers light yellowish-green. Young leaves brownish-pink. Common.
CBL 1317 13 April 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)