Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, from central of Nam Duong Vill. to Na Khao Mts. in west direction, around point 22°34′27″ N, 105°22′07″ E, 550 m In heavily logged closed primary evergreen broad-leaved lowland forests on limestone mts. Epiphyte
CPC 1324 12 Mar 2011 Coll.: N.Q.Hieu, N.T.Hiep, P.K.Loc, N.T.Vinh