title: Phylogenetic and taxonomic revision of Lopadostoma.
abstract: The genus Lopadostoma (Xylariaceae, Xylariales) is revised. Most species formerly assigned to Lopadostoma do not belong to the genus. Twelve species are herein recognised, of which two are only known from morphology. Ten species, of which six (L. americanum, L. fagi, L. insulare, L. lechatii, L. meridionale and L. quercicola) are newly described, are characterised by both morphology and DNA phylogeny using LSU, ITS and rpb2 sequences. Morphologically, ecologically and phylogenetically Lopadostoma is a well-defined genus comprising exclusively species with pustular pseudostroma development in bark of angiospermous trees. Phaeosperma ailanthi, Phaeosperma dryophilum and Sphaeria linosperma are combined in Lopadostoma. Lopadostoma gastrinum is neotypified and L. turgidum is lecto- and epitypified. Species with asci and ascospores similar to those of Lopadostoma but having perithecia immersed in wood, particularly those of Lopadostoma subg. Anthostomopsis have been determined to be unrelated to the genus. DNA data confirm that Anthostoma is unrelated to Lopadostoma. Its type and currently only confirmed species Anthostoma decipiens belongs to Diatrypaceae. DNA data also show that L. pouzarii and Barrmaelia macrospora are unrelated to Lopadostoma. A commentary is provided for names in Lopadostoma and those names in Anthostoma that may be putative species of Lopadostoma based on their protologues. Anthostoma insidiosum is an older name for Anthostomella (Diatrype) adusta.
authors.affiliation: Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria;
authors.forename: W M
authors.initials: WM
authors.lastname: Jaklitsch
authors.affiliation: Las Muros, F-09420, Rimont, France.
authors.forename: J
authors.initials: J
authors.lastname: Fournier
authors.affiliation: Department of Plant Pathology, Washington State University, Pullman, Washington 99164-6430, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Rogers
authors.affiliation: Division of Systematic and Evolutionary Botany, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Wien, Austria;
authors.forename: H
authors.initials: H
authors.lastname: Voglmayr
keywords: Anthostoma; Anthostomella; Ascomycota; Diatrypaceae; ITS; LSU; Phaeosperma; Xylariaceae; Xylariales; pyrenomycetes; rpb2