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Abstract
Parsimony analysis based on ribosomal DNA sequence and morphological data was performed for 28 species of Acanthophysium, Amylostereum, Aleurodiscus, Corticium, Cytidia, Dendrocorticium, Duportella, Peniophora, Stereum, and Vuilleminia (Corticiaceae, Basidiomycota). Sequence data from a portion of the ribosomal large subunit (nDNA) and morphological data were analyzed separately as well as in combination. Three monophyletic groups were clearly distinguished: Peniophora spp., Aleurocystidiellum spp., Acanthophysium + Stereum spp. Characters used for delimitation of Aleurodiscus s.l. are discussed.