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. Terrestrial herb up to 1.5 m hg. Flowers yellow-greenish, central petal brightly yellow with reddish stripes at base. Rare.
VH 5680 24.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)