N. Vietnam, Ha Giang prov., Quan Ba distr., Can Ti municipality, vicinities of Sing Xuoi Ho village (N 23°04′ E 104°59′), 26.2 km to 002° of Ha Giang city. Primary closed evergreen mixed wet mossy forest (with Cupressus, Taxus, Nagea and Pseoudotsuga) along tops of karst remnant limestone ridge at elev. 1100-1150 m a.s.l. Lithophyte forb on shady cliffs. Leaves above deep velvety green with white large irregular spot, uniform pale green below. Flowers pale pink. Common, one of codominante of lithophytic forb communities.
NTH 3619 12 Oct. 1999
Collectors: N.T. Hiep, N.Q. Binh, L. Averyanov, P. Cribb.