title: Dyrithiopsis lakefuxianensis gen. et sp. nov. from Fuxian Lake, Yunnan, China, and notes on the taxonomic confusion surrounding Dyrithium.
abstract: A new taxon with Dyrithium-like characteristics was collected from Lake Fuxian in China. The taxon is typical of the Amphisphaeriaceae in that it has relatively large, ostiolate, immersed ascomata, unitunicate asci with a J+ subapical ring, and brown ascospores. It is similar to Dyrithium in that it has muriform ascospores, but considerable confusion surrounds this genus. In Dyrithium asci are bitunicate and lack a J+ subapical ring, while this was not true of our species. A new genus, Dyrithiopsis, therefore is established to accommodate this new taxon. Details of its anamorph also are provided, based on cultural studies. Parsimony analyses of part of the large-subunit rDNA provide further evidence to support the familial placement of this new genus in the Amphisphaeriaceae. The taxonomic position of Dyrithium also is discussed.
authors.affiliation: School of Biological Sciences, King Henry Building, University of Portsmouth, Portsmouth, PO1 2DY, United Kingdom.
authors.forename: R
authors.initials: R
authors.lastname: Jeewon
authors.forename: L
authors.initials: L
authors.lastname: Cai
authors.forename: E C Y
authors.initials: EC
authors.lastname: Liew
authors.forename: K Q
authors.initials: KQ
authors.lastname: Zhang
authors.forename: K D
authors.initials: KD
authors.lastname: Hyde