sp. nov., a novel basidiomycetous yeast species isolated from a flower of in Portugal.

During a survey of floricolous yeasts in Portugal, a basidiomycetous yeast representing a novel species in the genus was isolated in Portugal from the flower of , an ornamental exotic species native to Central and South America. A combination of phylogenetic analyses of DNA barcode sequences used in yeast molecular systematics, namely the D1/D2 domain and the complete internal transcribed spacer (ITS) region supported the recognition of a new species of , that we designate sp. nov. (ex-type strain PYCC 9191=CBS 18097). Although the assignment of the new species to the genus was evident, the detection of its closest relatives appeared more problematic. Nevertheless, our analyses suggested that sp. nov. belongs a clade that also includes , and , together four candidate novel species. In addition we provide the molecular identification of several unidentified strains whose D1/D2 and ITS sequences are available from GenBank.