Towards a natural classification of Dothideomycetes 7: The genera Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia (Dothideomycetes incertae sedis)

Abstract

This is the seventh of a series of papers in which we report on re-examination of herbarium types of Dothideomycetes genera, incertae sedis. By examining and re-describing the generic types which are not previously illustrated or are poorly described, we attempt to propose their familial and higher placement according to the morphology based on modern taxonomic concepts. In this paper the type specimens of Allosoma, Austropleospora, Dangeardiella, Griggsia and Karschia were re-examined and are illustrated. An overview of the history and descriptions and illustrations of these genera are provided. Based on morphological similarities, Allosoma is placed in Englerulaceae, while Austropleospora and Karschia are transferred to Pleosporaceae, and Lichenotheliaceae, respectively. Dangeardiella is classified in Pleosporales, genera incertae sedis, while Griggsia is placed in Sordariomycetes, genera incertae sedis as it is not typical of any existing family of Dothideomycetes as it has unitunicate asci. Recollection, epitypifycation and multi-gene molecular analyses are needed for all type species of these genera in order to resolve their familial status. By illustrating and redescribing the type species, we expect to stimulate interest for these fungi to be recollected, sequenced and placed in a natural taxonomic framework in the Ascomycota.

Studies on Parmulariaceae I. A phylogeny based on available sequence data; introducing Parmulariales ord. nov., and Hemigraphaceae, Melaspileellaceae and Stictographaceae fam. nov.

“…Barr (1979) placed Karschia in Patellariaceae Corda. Then it was transferred to Lichenotheliaceae, Lichenotheliales by Thambugala et al (2014a) based on the morphology observed from herbarium material. Ertz & Diederich (2015) reexamined the type specimen and sequenced the type species.…”

Naming and outline of Dothideomycetes–2014 including proposals for the protection or suppression of generic names

“…Genera marked with ( # ) refer to changes made via articles in the same journal volume and annotated under the family or order (i.e. Ariyawansa et al 2014c; Boonmee et al 2014b; Hongsanan et al 2014c; Thambugala et al 2014c; Phookamsak et al 2014). In the present outline, we have added ( C ) = coelomycetous and ( H ) = hyphomycetous asexual genera against entries where known.…”

“…Notes: Lumbsch and Huhndorf (2010) listed Allosoma under Dothideomycetes , genera incertae sedis . Thambugala et al (2014c) refer Allosoma to Englerulaceae based on morphological similarities with the generic type of Englerulaceae .…”

“…Notes: Thambugala et al (2014c) excluded this genus from Dothideaceae and placed in Teratosphaeriaceae based on morphology.…”

“…Notes: Thambugala et al (2014c) examined and illustrated Placostromella macrospora , the type species of Placostromella and placed in Parmulariaceae based on its morphology.…”