Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, Nam Duong Vill., around point 22°35′07″ N, 105°22′14″ E, 344 m In logged closed primary evergreen broad-leaved lowland forests on foots of limestone mts. Epiphyte
CPC 1269 10 Mar 2011 Coll.: N.Q.Hieu, N.T.Hiep, P.K.Loc, N.T.Vinh