N. Vietnam, prov. Lao Cai, distr. Than Uyen, municipality Ho Mit (N 22°06′ E 103°52′). Elevation to Mang Han San quartzite peak by SW slope from Ban Thao village (SSW macroslope of Hoang Lien Son ridge). Clumpy forb on vertical open wet quartzite bluffs at 1900 m elev. Common. Codominante of primary lithophytic forb vegetation on open cliffs and tops of mt. system on elevations 1900-2700 m.
NTH 2825 21-22 May 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)