Two new species of Genoplesium R.Br. sensu lato (Orchidaceae: Prasophyllinae) from the Central Coast of New South Wales

Abstract

We describe two new species of Prasophyllinae from New South Wales, in the genus Genoplesium R.Br. following the generic classification currently in use at the National Herbarium of New South Wales. One of these new species, Genoplesium branwhiteorum M.A.M.Renner & P.H.Weston, which we name for the Branwhite family, has been known for nearly a decade under the informal name Corunastylis sp. Charmhaven (NSW896673). The other new species, G. geminatum M.A.M.Renner & Towle has been confused with both G. rufum (R.Br.) D.L.Jones & M.A.Clem. and G. trifidum (Rupp) M.A.M.Renner, although it is more similar to G. mucronatum (Rupp) M.A.M.Renner and G. tasmanicum D.L.Jones, and possesses a combination of features of consistent expression supporting its recognition as a new species. Three new combinations are made. Genoplesium cuspidatum (D.L.Jones & L.M.Copel.) M.A.M.Renner, comb. nov. is based on Corunastylis cuspidata D.L.Jones & L.M.Copel., Genoplesium laminatum (Fitzg.) M.A.M.Renner, is based on Prasophyllum laminatum Fitzg. and Genoplesium mucronatum (Rupp) M.A.M.Renner is based on Prasophyllum mucronatum Rupp. [listed as a synonym of G. rufum in PlantNet].