Flora of Singapore precursors, 46: Studies in Oberonia 12 (Orchidaceae: Malaxideae)

A few taxonomic and nomenclatural aspects of the genus Oberonia Lindl. relating to the Flora of Singaporeare resolved. First, no subgeneric names are recognised in the genus Oberonia. Oberonia subg./sect. Apothemnophyllum Schltr. and Oberonia subg./sect. Menophyllum are synonyms of Oberonias.s. The autonymous subgenus is a non-mandatory rank, hence, can be omitted. Second, Oberonia hamadryas Ridl. is the correct name for O.scortechinii Hook.f., and the lectotype of Hippeophyllum is here corrected to Hippeophyllum micranthum Schltr. Third, additional species-level synonyms are established for O. equitans (G.Forst.) Mutel (O. hispidulaAmes, syn. nov.),O. lunata(Blume) Lindl. (O. wenzelii Ames,syn. nov.), and O. jenkinsiana (O. austro-yunannensis S.C.Chen & Z.H.Ji, O. clarkeiHook.f., O. elbertiiRidl., O. flabellifera Holttum, O. multidentata Aver., O. polyschistaSchltr., O.quadridentataAver., O. rhizophoretiSchltr., O. stenophyllaRidl., O. sumatranaSchltr., O.sumatrana var. endertii Ridl., syn. nov.). Fourth, the specimen K000943003 is here designated as second-step lectotype of Oberonia biaurita Hook.f., and simultaneously also as epitype of O. lunata