S. Vietnam, Kontum Prov., Sa Thay Distr., Sa Son Municipality, Chu Mom Ray nature reserve (14°25′N, 107°44′E). Primary wet broad-leaved closed evergreen mountain forest on granites at elev. 700-900 m. Tree about 15 m hg. Flowers reddish-brown, with yellow base of tepals. Not common.
VH 5796 28 04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)