N. Vietnam, Ha Giang prov., Meo Vac distr., Shung Cha municipality, vicinities of Lo Loi Phin village (N 23°11′ E 105°17′). Coniferous primary mossy forest with domination of Pseudotsuga brevifolia along tops of remnant limestone karst ridge at elev 1200-1250 m a.s.l. Terrestrial and lithophytic forb up to 1.5 m hg in grassy open place. Flowers white. Very common.
NTH 3320 05 Oct. 1999
Collectors: N.T. Hiep, N.Q. Binh, L. Averyanov, P. Cribb.