Magnoliaceae Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, central of Nam Duong Vill., around point 22°35′07″ N, 105°22′14″ E, 344 m In heavily logged closed primary evergreen broad-leaved lowland forests on slope of limestone mts. The most common species with long and hairy outside stipules. Small treesn with flower buds.
CPC 1316 11 Mar 2011 Coll.: N.Q.Hieu, N.T.Hiep, P.K.Loc, N.T.Vinh