Vietnam, Ha Giang Prov., Meo Vac Distr, Pa Vi Municipality, vicinities of Pa Vi Thuong village around point 23°11′05″N, 105°24′04″E at elevation about 1450 m a.s.l.
Highly degraded remnants of coniferous forest with Pseudotsuga sinensis on very steep rocky slopes and along tops of rocky remnant ridges composed with highly eroded marble-like limestone.
Lithophytic herb on very steep rocky mossy slope. Flowers white, column and anther pink-brown. Common.