title: A new species of Acanthostigma (Tubeufiaceae, Dothideomycetes) from the southern hemisphere.
abstract: 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.
authors.affiliation: Laboratorio de Estudios Básicos y Biotecnológicos de Algas y Hongos, CERZOS-CCT-CONICET y U.N.S., Bahía Blanca, Buenos Aires, Argentina. rsanchez@uns.edu.ar
authors.forename: R M
authors.initials: RM
authors.lastname: Sánchez
authors.forename: A N
authors.initials: AN
authors.lastname: Miller
authors.forename: M V
authors.initials: MV
authors.lastname: Bianchinotti
mesh_terms: D001203:Ascomycota / Q000145:classification* / Q000235:genetics / Q000648:ultrastructure; D004271:DNA, Fungal / Q000032:analysis / Q000235:genetics; D004275:DNA, Ribosomal / Q000032:analysis / Q000235:genetics; D029962:Fagaceae / Q000382:microbiology*; D005843:Geography; D008969:Molecular Sequence Data; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D013020:South America; D013172:Spores, Fungal / Q000648:ultrastructure
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal