N. Vietnam, prov. Cao Bang, distr. Thach An, municipality Thuy Hung, vicinities of Na Lit village (N 22°30′ E 106°27′), about 27 km to SE from Cao Bang town. Secondary senideciduous open forest and shrubs along tops of remnant limestone ridge at 500-550 m alt. Young treelet about 2 m hg in open place. Rare. Certainly main dominant (reaching 15-20 m hg) of extincted coniferous or mixed primary forests expanded along tops of the ridge in the past.
CBL 909 04 Dec. 1998
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)