RESUMO

A new species belonging to the Dothideomycete genus Acanthostigma is described from bark of two Nothofagus species from Argentina. Its identity as a new species is based on both morphology and molecular sequence data. Acanthostigma patagonica differs from other species in the genus by having larger ascomata and setae and wider, asymmetrical ascospores. An amended key to Acanthostigma species is provided along with a discussion of other species previously described from South America.

Assuntos

Ascomicetos/classificação , Fagaceae/microbiologia , Ascomicetos/genética , Ascomicetos/ultraestrutura , DNA Fúngico/análise , DNA Fúngico/genética , DNA Ribossômico/análise , DNA Ribossômico/genética , Geografia , Dados de Sequência Molecular , Filogenia , Análise de Sequência de DNA , América do Sul , Esporos Fúngicos/ultraestrutura