N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Yen Lac, vicinities of Yen Lac village (N 22°44′ E 105°50′). Secondary open broadleaved forest on alluvial foothills of remnant karst limestone ridges at 1050-1100 m elev. Parasitic shrub 1-1.5 m hg on cultivated trees Diospiros kaki. Flowers yellow, petals with purple spot at the bbended part. Common.
CBL 1347 14 April 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)