Nomenclature and typification in Geissois (Cunoniaceae) in the South-West Pacific

The taxonomic history of Geissois Labill. is described. All names validly published in Geissois in New Caledonia, Vanuatu and the Solomon Islands are discussed and lectotypified where necessary, with names from Fiji mentioned briefly; invalid names are listed separately. The names G. lanceolata (Guillaumin) H.C.Hopkins, comb. et stat. nov. and G. velutina Guillaumin ex H.C.Hopkins, sp. nov. from New Caledonia are published. An index accounts for all names effectively published in, or referable to, Geissois s.l. including those from Australia.