S. Vietnam, Kontum Prov., Sa Thay Distr., Sa Son Municipality, Chu Mom Ray nature reserve (14°25′N, 107°44′E). Secondary open broad-leaved evergreen dry forest on granites at elev. 500-600 m. Tree about 6 m hg. Flowers dirty red-violet. Widely cultivated as ornamental plant.
VH 5784 28 04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)