Northern Vietnam, Ha Giang Prov., Quan Ba Distr., Thanh Van Municipality, in the vicinity of Lung Cung village, around 1 km to the E from point 23°05′32′'N, 105°00′10′'E. Primary coniferous forest with Pseudotsuga brevifolia on remnant highly eroded limestone ridge at elev. 1100-1200 m a.s.l. Shrub 1.2-2 m hg on rocky slope. Flowers white with light pink tint and violet upper apical part of tube, with orange dots inside. Not common.