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The delimitation of Antarctic and bipolar species of neuropogonoid Usnea (Ascomycota, Lecanorales): a cohesion approach of species recognition for the Usnea perpusilla complex

BiologySpecies RecognitionBipolar SpeciesMorphological EvidencePhylogeneticsMolecular EcologyBiogeographyCohesion ApproachNatural SciencesEvolutionary BiologyZoogeographyCladisticsZoological Taxonomy