Asclepiadaceae Hoya nutans Aver. et V.T. Pham Type Hoa Binh Prov., Lac Son Distr., Tu Do Municipality, Mon village, around point 20°25’29”N 105°19’36”E. Primary broad-leaved forest on steep rocky slopes of remnant mountain composed with solid crystalline highly eroded limestone at elevation about 500-700 m a.s.l. Semi-woody vine. Occasional. CPC 1592e / 11531 25 March 2011 Coll.: N.Q.Hieu, L.Averyanov, N.T.Hiep, P.K.Loc, P.V.The, N.T.Vinh, T.B.Ngan, N.Tap, D.D.Dao, V.T.Ha, T. Maisak, L. Osinovetz. Fl. et coll. under cultivation at 16 July 2016. Flowers with light sweet fragrance, white, corona pink. L.Averyanov. Photos. d-EXSICCATES OF VIETNAMESE FLORA 0258/CPC 1592e © L.Averyanov