S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14°39′N, 108°25′E). Remnants of primary broad-leaved evergreen mountain forest on sandstone slopes at elev.
1100-1200 m. Terrestrial herb up to 1.2 m hg in open slope of forest river. Flowers white, central tepal light yellow with two red longitudinal stripes. Rare.
VH 5745 26.04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)