Abstract
The taxonomic status of Metrosideros queenslandica, and related species from New Guinea, is reassessed on the basis of fundamental morphological and anatomical characters and these species are found to be more closely allied to Tristanin sens. str. than to Metrosideros sens. lat. The current classification of this group of species as Metrosideros subg. Mearnsia sect. Adnatae J. W. Dawson is rejected and a new genus, Thaleropia, is described and the new combinations T. queeirslandica, T. iteophylla and T. hypargyrea made.

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