Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, environs of Mo O O O village, around point 17°39′21.7”N 105°54′59.5”E.
Closed broad-leaved primary forest on very steep rocky slope at middle part of remnant mountain (with summit at about 750 m) composed with highly eroded solid crystalline limestone at elevation about 556 m a.s.l.
Treelet about 10 m tall. Very common.
CPC 3815 27 July 2011 Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Vinh.