Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, around point 17°41′28”N 105°53′42.7”E.
Primary closed evergreen broad-leaved forest on rocky very steep cliffy slope of remnant mountain composed with solid crystalline limestone at elevation about 700 m a.s.l. near to the top of mountain.
Lithophyte herb to 1 m tall on mossy exposed rock. Flowers light pink. Occasional.