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New species of small dictyostelids from the Great Smoky Mountains National Park

     Department of Environmental and Plant Biology, Ohio University, Athens, Ohio 45701

Eduardo Vadell

     Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento Ciencias Biologicas-Pabellon II, 1428 Buenos Aires, Argentina

John C. Landolt

     Department of Biology, Shepherd University, Shepherdstown, West Virginia 25443

Steven L. Stephenson ¹

     Department of Biological Sciences, University of Arkansas, Fayetteville, Arkansas

Ten new species of small dictyostelids, five belonging to Acytostelium (A. anastomosans, A. longisorophorum, A. magnisorum, A. serpentarium and A. singulare) and five to Dictyostelium (D. amphisporum, D. naviculare, D. oculare, D. potamoides and D. stellatum), were isolated from forest soils in the Great Smoky Mountains National Park. These species were recovered mostly from acidic soils and at higher elevations. They represent a large group of dictyostelids of small stature (<2 mm total height) on which we are beginning to accumulate more information.

Key words: Acytostelium, Dictyostelium, forest soils, southern Appalachians, taxonomy

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