In type specimens deposited at China National Herbarium (PE),Institute of Botany,the Chinese Academy of Sciences,the types of eighteen names,Carex ischnostachya Steud.var.subtumida Kük.(Cyperaceae),Carex poculisquama Kük.(Cyperaceae),Scirpus pumilus Vahl subsp.distigmaticus Kük.(Cyperaceae),Aspidistra caespitosa C.Pei (Liliaceae),Campylandra longibracteata F.T.Wang & T.Tang (Liliaceae),Chionographis chinensis K.Krause (Liliaceae),Lilium sutchuenense Franch.(Liliaceae),Lloydia oxycarpa Franch.(Liliaceae),Lloydia tibetica Baker var.lutescens Franch.(Liliaceae),Lloydia yunnanensis Franch.(Liliaceae),Nomocharis henricii E.H.Wilson.f.maculate W.E.Evans (Liliaceae),Ypsilandra yunnanensis W.W.Smith (Liliaceae),Dioscorea esquirolii Prain & Burkill (Dioscoreaceae),Dioscorea platanifolia Prain & Burkill (Dioscoreaceae),Iris bungei Maxim.(Iridaceae),Iris polysticta Diels (Iridaceae),Liparis cucullata S.S.Chien (Orchidaceae) and Orchis diantha Schltr.(Orchidaceae),of taxa in Monocotyledon are found to be syntypes under Article 9.5 of the International Code of Nomenclature for Algae,Fungi,and Plants (Melbourne Code).According to Article 8.1,9.11 and 9.12,and Recommendation 9A.2 and 9A.3,lectotypes for these eighteen names are here designated.