N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Dinh Phung, Man Lung ridge (N 22°47′ E 105°49′). Secondary mossy short tall grasslands on alluvial foothills of remnant karst limestone Man Lung ridge at 1400-1450 m elev. Terrestrial prostrate herb among limestone rocks. Flowers yellow. Very common. Codominante of short tall grassland.
CBL 1487 18 April 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)