FLORA OF VIETNAM Begoniaceae Begonia sonlaensis Aver. Epitype. Son La Prov., Yen Chau Distr., Muong Lum Municipality, Na Hat village around point 21°00’35”N 104°29’06”E. Primary coniferous forest with Pinus kwangtungensis and Calocedrus rupestris on very steep rocky slopes of remnant mountain composed with highly eroded solid limestone at elevation 1000-1150 m a.s.l. Lithophytic herb on vertical shady cliff. Occasional. CPC 1876a 1 April 2011 Coll.: L.Averyanov, N.T.Hiep, T.B.Ngan. Flowered under cultivation in April-May 2012. Flowers light pink. Almost odorless. Coll.: L.Averyanov, 23 April 2012. CPC 1876aa. Photos. d-EXSICCATES OF VIETNAMESE FLORA 0192/CPC 1876aa (LE) © Nguyen Tien Hiep, L.Averyanov, Phan Ke Loc