Ha Giang Prov., Quan Ba Distr., Can Ty municipality, Bat Dai Son NR, at right side of Mien River, around point 230 05′ 29″ N , 1050 01′ 06″ E, Primary coniferous forest with Pseudotsuga brevifolia, Xanthocyparis vietnamensis, Calocedrus rupestris on remnant highly eroded limestone ridge at elev. 1000-1200 m a.s.l. common Herb epiphyte on tree or lithophyte
CPC 145 19 March 2010 Coll.: N. T.Hiep, N. Q.Hieu, N. S.Khang, N.T.Vinh & P.V. The Det. Leonid Averyanov
(Funded by Global Trees Campaign grant through FFI)