Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, around point 17°41′19”N 105°53′35.5”E.
Primary closed evergreen broad-leaved shady forest on lower part of mountain slope composed with solid highly eroded crystalline limestone at elevation about 422 m a.s.l. faced to stream valley.
Undershrub 1 m tall on shady rocky slope. Flowers light dull yellowish. Not common.