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Roselymyces, a new asexual genus of the Xylariales (Ascomycota) from Brazil

Patrícia Oliveira Fiuza, Carolina Ribeiro Silva, Tiago Andrade Borges Santos, Huzefa Raja, Rafael Felipe Castañeda-Ruiz & Luís Fernando Pascholati Gusmão

Sydowia 70: 59-65

Published online on May 2nd, 2018

The new genus Roselymyces is established based on morphological and molecular analyses. Roselymyces brasiliensis gen. et sp. nov. is characterized by conidiophores with a lobed basal cell, polyblastic, sympodial conidiogenous cells, and chains of na­viculate to subcylindrical conidia. Maximum Likelihood and Bayesian analysis using combined internal transcribed spacer re­gion (ITS) and partial large subunit (LSU) of the nuclear rRNA gene region places Roselymyces on an isolated clade as sister to Cylindrium, Polyscytalum, Pseudoidriella and Tristratiperidium within the Xylariales.

Keywords: asexual fungi, molecular phylogeny, taxonomy, tropical fungi.

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