Margaret Elizabeth Barr-Bigelow

The pathogenic fungus Cryphonectria parasitica (formerly Endothia parasitica) is a member of the Ascomycota (sac fungi). This necrotrophic fungus is native to East Asia and South East Asia and was introduced into Europe and North America in the early 1900s. Strains of the fungus spread more or less rapidly and caused significant tree loss in both regions. Strains of the fungus can be more or less virulent.

Phyllachorales is a small order of perithecial sac fungi containing mostly foliar parasites. This order lacks reliable morphological characters making taxonomic placement of genera difficult. There is controversy among mycologists as to the boundaries of this order. Family Phaeochorellaceae was added in 2020.

The Chaetothyriales are an order of ascomycetous fungi in the class Eurotiomycetes and within the subclass Chaetothyriomycetidae. The order was circumscribed in 1987 by mycologist Margaret Elizabeth Barr-Bigelow.

The Venturiaceae are a family of fungi in the order Venturiales. Several of the species in this family are plant pathogens.

The Chaetosphaeriaceae are a family of fungi in the Ascomycota, class Sordariomycetes. The family was circumscribed by Martina Réblová, Margaret Elizabeth Barr Bigelow, and Gary Samuels in 1999. Species in the family have a cosmopolitan distribution, and are found in both temperate and tropical climates. Fossils of the Chaetosphaeriaceae are known from the Carboniferous, Eocene, Oligocene, Miocene and more recent sediments.

The Calosphaeriales are an order of fungi within the class Sordariomycetes containing 2 families. They are saprophytes and have small fruiting bodies.

The Phaeosphaeriaceae are a family of fungi in the order Pleosporales. Species in the family have a cosmopolitan distribution, and are generally nectrotrophic or saprobic on a wide range of plants. Wijayawardene et al. 2020 produced an update that recognized 82 genera.

The Parmulariaceae are a family of fungi with an uncertain taxonomic placement in the class Dothideomycetes.

The Chaetothyriaceae are a family of ascomycetous fungi within the order Chaetothyriales and within the class Eurotiomycetes. A 2012 molecular analysis of specimens collected from northern Thailand revealed three new species in the family (Ceramothyrium thailandicum, Chaetothyrium brischofiacola and Phaeosaccardinula ficus).

The Tubeufiaceae are a family of fungi in the order Tubeufiales of the class Dothideomycetes. The family was circumscribed in 1979 by mycologist Margaret Elizabeth Barr-Bigelow.

The Pleomassariaceae are a family of fungi in the order Pleosporales. Taxa have a widespread distribution in both temperate and tropical regions, and are saprobic or necrotrophic on wood, bark, and other herbaceous material. The genus was circumscribed by mycologist Margaret Elizabeth Barr-Bigelow in 1979.

The Planistromellaceae are a family of fungi, with in the order Botryosphaeriales. In 2007, they were formerly, placed in the Dothideales order of the Dothideomycetes class.

The Leptosphaeriaceae are a family of fungi in the order Pleosporales. The family was circumscribed by mycologist Margaret E. Barr in 1987. According to the Dictionary of the Fungi (10th edition, 2008), the family contained 8 genera and 302 species. The family has a widespread distribution, but is especially prevalent in temperate regions. Species are either saprobic or grow as nectrotrophs (organisms that grow and reproduce on dead cells) on the stems or leaves of plants.

The Graphostromataceae are a family of fungi in the order Xylariales. This was a monotypic family, containing the single genus Graphostroma, which in turn contains the single species Graphostroma platystoma. Species Fungorum added genus Theissenia (with its 2 species) to the family. In 2018, multi-gene phylogenetic analyses revealed that Graphostromataceae was close to the families of Barrmaeliaceae and Xylariaceae (Daranagama et al. 2018, Voglmayr et al. 2018, Wendt et al. 2018). Then based on phylogeny and morphology, Theissenia was excluded from the family and accepted in Hypoxylaceae

The Delitschiaceae are a family of fungi in the order Pleosporales. Taxa are widespread, especially in temperate regions, and are saprobic, often found growing in herbivore dung.

Endothia radicalis is a plant pathogen. It was discovered in 1916 by Stephen Bruner. He found it growing on eucalyptus, mango and avocado.

The Teichosporaceae are a family of fungi in the order Pleosporales.

The Seuratiaceae are a family of fungi in the Ascomycota division. This family can not yet be taxonomically classified in any of the ascomycetous classes and orders with any degree of certainty (incertae sedis). The genus name of Seuratia is in honour of Léon Gaston Seurat (1872–1949) was a French zoologist and parasitologist known for his investigations of fauna native to French Polynesia and northern Africa.

The Parodiellaceae are a family of fungi with an uncertain taxonomic placement in the class Dothideomycetes. It contains the single genus Parodiella, which has four species.

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Jobellisia is a genus of fungi within the monotypic family Jobellisiaceae and the monotypic order Jobellisiales and also the subclass Hypocreomycetidae, and class Sordariomycetes. The genus was circumscribed by Margaret Elizabeth Barr-Bigelow in 1993 with Jobellisia luteola as the type species. It contains species that grow on dead wood and bark in tropical and temperate regions of the Northern Hemisphere.

The Fenestellaceae are a family of fungi with an uncertain taxonomic placement in the class Dothideomycetes.

The Apiosporaceae are a family of fungi in the Ascomycota. It was placed in the order Amphisphaeriales in 2020. The family was circumscribed in 1998. Species in the family are saprobic, and derive nutrients by decomposing and digesting plant matter, especially palms and grasses. Anamorph genera include Arthrinium and Cordella.

Splanchnonema platani is a fungus in the genus Splanchnonema. It was formerly known under the name Massaria platani. The anamorph of the fungus is known as Macrodiplodiopsis desmazieresii. The fungus has caused serious damage to plane trees across Europe.

Phaeochoraceae is a family of sac fungi in the order Phyllachorales.

Grandigallia is a genus of fungi in the class Dothideomycetes. The relationship of this taxon to other taxa within the class is unknown (incertae sedis). A monotypic genus, it contains the single species Grandigallia dictyospora.

Extrawettsteinina is a genus of fungi in the family Pleosporaceae. It contains 2 species; Extrawettsteinina andromedae (Auersw.) M.E.Barr Extrawettsteinina pinastri M.E.Barr

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Sydowiella depressula is a fungal plant pathogen that infects caneberries.