Abstract: Based on complex observation of type materials,real photos and collections,investigation of type locality and examination of original descriptions,some taxonomically uncertain Latin names under Phyllostachys Sieb.et Zucc.were discussed and verified.As a result,P.sapida Yi (=P.arcana McClure),P.balansae Nguyen (=P.bambusoides Sieb.et Zucc.),P.subulata W.T.Lin et Z.M.Wu (=P.bambusoides Sieb.et Zucc.f.shouzhu Yi),P.cantoniensis W.T.Lin (=P.heteroclada Oliv.),P.lofushanensis C.P.Wang et al.(=P.nidularia Munro f.basipilis G.H.Lai),P.aristata W.T.Lin (=P.nidularia Munro f.basipilis G.H.Lai),P.guizhouensis C.S.Chao et J.Q.Zhang (=P.nigra (Lodd.ex Lindl.) Munro var.henonis (Mitf.) Stapf ex Rendle),and P.lithophila Hayata (=P.sulphurea (Carr.) A.et C.Riv.var.viridis R.A.Young) were all reduced to synonyms;the systematic position of three species from Vietnam was proposed:P.caobangensis Nguyen may possibly be conspecific with P.bambusoides Sieb.et Zucc.,and P.baccanensis Nguyen and P.vietbacensis Nguyen conspecific with P.kwangsiensis W.Y.Hsiung et al.