Towards a natural classification of Dothideomycetes: The genera Dermatodothella, Dothideopsella, Grandigallia, Hysteropeltella and Gloeodiscus (Dothideomycetes incertae sedis)

Abstract

One-hundred and sixteen genera are listed as incertae sedis in the class Dothideomycetes. This is a first of a series of papers in which we re-examine the herbarium types of these genera, which are generally poorly known. By examining the generic types we can suggest higher level placements, but more importantly we illustrate the taxa so that they are better understood. In this way the taxa can be recollected, sequenced and placed in a natural taxonomic framework in the Ascomycota. In this study we re-examined the genera Dermatodothella, Dothideopsella, Gloeodiscus, Grandigallia and Hysteropeltella. We re-describe and illustrate the type species of these genera and discuss their placements using modern concepts. Dermatodothella is placed in Polystomellaceae, Dothideopsella in Phaeosphaeriaceae, Grandigallia in Shiraiaceae and Hysteropeltella in Schizothyriaceae, while Gloeodiscus is retained in Dothideomycetes incertae sedis. Fresh collections of these genera are needed for further studies, so that they can be epitypified and molecular data can be analyzed to obtain a natural classification.

Towards a natural classification of Dothideomycetes 2: The genera Cucurbidothis, Heterosphaeriopsis, Hyalosphaera, Navicella and Pleiostomellina (Dothideomycetes incertae sedis)

“…We have been studying the genera of Dothideomycetes (Ariyawansa et al 2013a,b,c, Boonmee et al 2011, Liu et al 2012, Wu et al 2011, Zhang et al 2012, especially Dothideomycetes incertae sedis to provide a natural classification of this large class (Ariyawansa et al 2013b, Thambugala et al 2014. The aim of the present study, the second paper in this series ( (Ariyawansa et al 2013b), is to re-visit the generic types of genera that have been categorized in Dothideomycetes incertae sedis and are poorly understood.…”

“…The basic methodology used in this study was the same as Ariyawansa et al (2013b). Type specimens were borrowed from BPI, FH, S, URM and W. Ascomata were rehydrated in water and 5% KOH prior to examination and sectioning.…”

“…The aim of the present study, the second paper in this series ( (Ariyawansa et al 2013b), is to re-visit the generic types of genera that have been categorized in Dothideomycetes incertae sedis and are poorly understood. In this paper we re-describe Cucurbidothis, Heterosphaeriopsis, Hyalosphaera, Navicella and Pleiostomellina from type material, provide illustrations and discuss suitable placements at the family and ordinal levels.…”

Towards a natural classification of Dothideomycetes 6: The genera Dolabra, Placostromella, Pleosphaerellula, Polysporidiella and Pseudotrichia (Dothideomycetes incertae sedis)

“…In the present study, and also in Ariyawansa et al (2013a), we re-examined generic types of five genera which previously had been placed in Dothideomycetes genera, incertae sedis by Lumbsch & Huhndorf (2010). Dolabra, Placostromella, Pleosphaerellula, Polysporidiella and Pseudotrichia were re-examined and redescribed from their type specimens.…”

How the Necrotrophic Fungus Alternaria brassicicola Kills Plant Cells Remains an Enigma

“…Some fungi develop sexual spores during their life cycles, but for others, the sexual stage is unknown (1). The Dothideomycetes are a large and ecologically diverse class of fungi and contain both sexual and asexual species (2).…”