S.Vietnam, Thua Thien Hue Prov., Phu Loc Distr., Bach Ma National Park, Bach Ma mt, Hai Vong Dai peak, around point 16°11′46′'N 107°51′45′'E at elev. 1300-1350 m a.s.l.
Mixed and broad-leaved evergreen primary closed mt forest on steep granite slopes. On steep roadcut in shady place. Lithophytic herb on wet granite rocks. Flowers yellow. Occasional.
HLF 882 18 April 2003. (Photo).
Coll. V.X.Phuong, L.Averyanov, N.X.Tam, N.T.Vinh. Grant from Henry Luce Foundation.