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Life Sciences Commons

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Biodiversity

University of Tennessee, Knoxville

Faculty Publications and Other Works -- Ecology and Evolutionary Biology

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Full-Text Articles in Life Sciences

Transatlantic Disjunction In Fleshy Fungi Iii: Gymnopus Confluens, Karen Hughes, Ronald H. Petersen Apr 2015

Transatlantic Disjunction In Fleshy Fungi Iii: Gymnopus Confluens, Karen Hughes, Ronald H. Petersen

Faculty Publications and Other Works -- Ecology and Evolutionary Biology

Phylogeographic data indicate that DNA differences consistently exist between the North American and European allopatric populations of Gymnopus confluens. Conversely, pairing experiments show that collections from both populations were sexually compatible in vitro and detailed morphological examinations of numerous fresh and dried basidiomata do not produce qualitative differences. Percent ITS sequence divergence between Europe and North American collections of G. confluens was 3.25%. Species delineation metrics including Rosenberg’s PAB statistic, PID metrics, RRD ( randomly distributed) and PTP (Poisson Tree Processes ) gave mixed indications that North American and European populations were distinct at species rank. …


Two New Species Of Ramaria From Arkansas, Karen Hughes, Ronald H. Petersen, Jay Justice Jul 2014

Two New Species Of Ramaria From Arkansas, Karen Hughes, Ronald H. Petersen, Jay Justice

Faculty Publications and Other Works -- Ecology and Evolutionary Biology

Two species of Ramaria from the Ozark region of Arkansas, USA, R. admiratia and R. calvodistalis, are proposed as new. They are described morphologically and placed molecularly within a large clade including taxa of ramarioid and cantharelloid fungi.