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 saprophyticchlorophylless white forb in shady steep slopes. Flowers white. Not rare.
NTH 3341 05 Oct. 1999
Collectors: N.T. Hiep, N.Q. Binh, L. Averyanov, P. Cribb.