Taxonomic Notes on New Zealand Orchids II: Typification of Nematoceras trilobus Hook.f. and the Names of Four Thelymitra Species Described by William Colenso

Key Points

• The study aims to clarify the typification of certain Orchidaceae species in New Zealand.
• Typification of species names described by Hooker and Colenso.
• Identification of lectotypes and the holotype for specified orchids.
• Discussion on synonymization between T. decora and T. nervosa.
• Lectotypes were designated for Nematoceras trilobus and three Thelymitra species.
• Discovery of the holotype for Thelymitra concinna at WELT.
• Insight into the synonymization of T. decora with T. nervosa.