David Warren Malloch

The Pseudeurotiaceae are a family of fungi in the division Ascomycota. This family can not yet be taxonomically classified in any of the ascomycetous classes and orders with any degree of certainty (incertae sedis).

The Microascaceae are a family of fungi in the class Sordariomycetes, subclass Hypocreomycetidae. The family was published by David Malloch in 1970, an emended description based on Everet Stanley Luttrell's original 1951 publication, and reassessed in 2020.

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

Coniochaetaceae is a fungal family in the order Coniochaetales. The family was updated in 2020.

Apodus is a genus of fungi that was originally placed within the Lasiosphaeriaceae family. In 2020 it was placed within the Neoschizotheciaceae family.

Tyrannosorus 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 Tyrannosorus pinicola. The genus was first formally described by Untereiner & Malloch, although the species was previously described by others. It takes its name, meaning "despotic heap", from its ascomata, which have long and sharp spines, presumably to deter small animals. T. pinicola's anamorph was previously falsely described as a member of the Helicodendron genus due to its helical

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Polytolypa is a monotypic genus of fungus containing the single species Polytolypa hystricis. First classified in the Onygenaceae family, as of 2008 it is considered to be in the Ajellomycetaceae, although there is still uncertainty as to its phylogenetic relationships with other similar genera. This species is only known from a single specimen derived in the laboratory from a specimen of dung of the North American porcupine, Erethizon dorsatum, collected in Ontario, Canada. Polytolypa hystricis contains bioactive compounds that have antifungal activity.

Phialoascus is a genus of fungi in the family Dipodascaceae. A monotypic genus, it contains the single species Phialoascus borealis.

Lasiobolidium is a genus of fungi in the family Pyronemataceae.

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Protostropharia alcis is a species of coprophilous agaric fungus in the family Strophariaceae. The fungus produces fruit bodies on moose, elk, and deer dung. The species has been recorded in Europe, Canada and Brazil.

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Orphnodactylis is a genus of fungi in the family Phyllachoraceae.

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Nigrosabulum is a genus of fungi in the Hypocreales order. The relationship of this taxon to other taxa within the order is unknown (incertae sedis), and it has not yet been placed with certainty into any family.