N. Vietnam, Prov. Cao Bang, Distr. Tra Linh, Subdistr. Quoc Toan, open dry evergreen eteleeria davidianaﰠforest on tops of remnant limestone mountains at 800-900 m alt. near Thang Heng lake in environs of Thang Hen and Lung Tao villages.
Tree 6-10 m high on top of ridges at 800-900 m alt. Dominant of forests on tops of mountains. VH 2451 04.01.1996
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5094-93)
Participants: L. Averyanov, N.T. Ban, A. Budantzev, L. Budantzev, N.T. Hiep, D.D. Huyen, P.K. Loc, G. Yakovlev