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The operational species concept, i.e., the one used to recognize species, is contrasted to the theoretical species concept. A phylogenetic approach to recognize fungal species based on concordance of multiple gene genealogies is compared to those based on morphology and reproductive behavior. Examples where Phylogenetic Species Recognition has been applied(More)
Studies of field- and patient-derived isolates conducted over the past 75 years have provided a general picture of the population structure of Coccidioides, the cause of coccidioidomycosis. Premolecular studies provided a general outline of the geographical range, epidemiology and distribution of the fungus. Recent studies based on molecular markers have(More)
We report evidence for recombination in lichenized fungi based on sequenced nuclear DNA markers, judging from the incongruence of their gene genealogies. Recombining population structures were found in two phylogenetic species of Letharia, one species that is observed in nature to produce abundant sexual structures (ascomata) and another species that(More)
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