S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14°39′N, 108°25′E). Primary broad-leaved closed evergreen wet mountain forest on sandstone steep slopes of forest river at elev. 1100-1200 m. Tree 6-8 m hg in open place. Flowers yellow-green, central tepal brightly yellow with yellowish-orange apex (later brown-purple). Rare.
VH 5579 23.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)