Paul Francis Cannon

The Boletinellaceae are a small family of mushroom-forming fungi, primarily characterized by small pores on the underside of the cap rather than gills. Though in the order Boletales, research shows they and Gyroporaceae are more closely related to earthballs of Sclerodermataceae than Boletaceae. Genera include Boletinellus and Phlebopus, the latter genus showing some Gondwanan distribution found in Australia, Sri Lanka and elsewhere. It contains the gigantic Phlebopus marginatus, the cap of which can reach 1 metre in diameter.

Geoglossum cookeanum is a mushroom in the family Geoglossaceae, commonly referred to as an "earth tongue" fungus. It is a member of the division Ascomycota, known for its dark, elongated, club-like fruiting body. Geoglossum cookeanum is found in nutrient-poor soils and plays an important role in ecosystem processes, particularly in decomposing organic material (Minter & Cannon, 2015).

The Cudoniaceae are a family of fungi in the Rhytismatales order. The family contains three genera: Cudonia and Spathularia, and Spathulariopsis. Species of Cudoniaceae are widespread in northern temperate regions.

The Magnaporthaceae are a family of fungi in the order Magnaporthales. It was circumscribed by Paul F. Cannon in 1994 for a group of grass-associated fungi centered on Magnaporthe (Nakataea). Magnaporthaceae have a harpophora-like asexual morphology and are often associated with roots of grasses or cereals. Important pathogens from the Magnaporthaceae include Nakataea oryzae, Gaeumannomyces graminis, Magnaporthiopsis poae and Magnaporthe rhizophila.

Glutinoglossum glutinosum, commonly known as the viscid black earth tongue or the glutinous earthtongue, is a species of fungus in the family Geoglossaceae (the earth tongues). First described in 1796 as a species of Geoglossum, the fungus has gone through several changes of genera in its taxonomic history. It was placed in its current genus, Glutinoglossum, in 2013. The smooth, nearly black, club-shaped fruitbodies grow to heights ranging from 1.5 to 5 cm (1⁄2 to 2 in). The head is up to 0.7 cm (1⁄4 in) long, and the stipes are sticky. Several other black earth tongue species are quite

Colletotrichum orbiculare is a plant pathogen of melons and cucumber. It causes the disease anthracnose that can effect curcubits causing lesions on various parts of the plant. It can effect cucumbers, melon, squash, watermelon and pumpkin, especially when the weather is rainy, humid and warm. It can be transmitted by seed as well as soil and survive between crops. It is also spread by feeding cucumber beetles, splashing water, tools and workers. Efforts to control the fungus include the practice of rotating cucurbits out for a 2-year period, planting cultivars with resistance, burning

The Thelebolales are an order of the class Leotiomycetes within the division Ascomycota. It contains the single family Thelebolaceae, circumscribed in 1968 by Finnish mycologist Finn-Egil Eckblad.

The Pyxidiophorales are an order of fungi in the class Laboulbeniomycetes. The order was created in 2001 to contain the single family Pyxidiophoraceae, circumscribed in 1971. The Pyxidiophoraceae are mostly coprophilous fungi that associate with mites and other arthropods. The type genus, Pyxidiophora, the largest genus of the family, has about 20 species.

The Doassansiaceae are a family of fungi in the division Basidiomycota and order of Doassansiales. The family contains 11 genera and about 58 species. They have a widespread distribution. Doassansiaceae is also known and classified as a smut fungi. They have parasitic hyphae with clamps, they are also teliosporic (have a thick-walled resting spore) and dimorphic (can be mold or yeasts) as well as not forming ballistoconidia (air discharged spores) in the haploid phase. The do not have haustoria (root-like structures). When the family was originally created (by R. Bauer and Oberw. 1997), it

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

The Harpellaceae are a family of fungi in the Harpellales order. The family contains 5 genera and 40 species.

Glutinoglossum is a genus of six species of earth-tongue fungi in the family Geoglossaceae. The widespread type species, G. glutinosum, is commonly known as the "glutinous earth tongue". G. heptaseptatum is known only from the Czech Republic. Four additional species were described in 2015.

The Vialaeaceae are a family of fungi in the Ascomycota and class Sordariomycetes. In 2018, it was placed in the order Amphisphaeriales. This is a monotypic taxon, containing the single genus Vialaea. The family of Vialaeaceae was named by P.F. Cannon in 1995. Pier Andrea Saccardo circumscribed the genus in Bull. Soc. Mycol. France vol.12 n page 66 in 1896. The genus name of Vialaea is in honour of Pierre Viala (1859–1936), who was a French scientist. Species in the family are distributed in both temperate and tropical areas of the world, where they grow parasitically on twigs.

Syspastospora parasitica is a mycoparasitic fungus. It attacks other fungi, particularly species of Beauveria and Isaria (molds that belong to the family Clavicipitaceae). It parasitizes the mycelium of its host by means of specialized contact cells, and produces dark brown, long-necked perithecia.

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

Pachyascus is the sole genus in the family Pachyascaceae. It contains a single species, the lichen Pachyascus lapponicus. Both the genus and species were described as new to science in 1968 by lichenologists Josef Poelt and Hannes Hertel. P. lapponicus was originally collected from Lapland, a province in northern Sweden. The lichen has several unusual characteristics: it grows exclusively along with the rock moss Andreaea, it bears goniocyst-like parts (goniocysts are small aggregations of photobiont cells surrounded by fungal hyphae) and produces tiny apothecia that stand in the leaf axils

Zopfiella ebriosa is a harmless fungus discovered covering the corks of wine bottles in 1991 in Tarragona, Spain. A member of the division Ascomycota, Zopfiella ebriosa is characterized by small and asymmetrical asci, presence of ostioles, and possession of germ slits.

Vladracula is a genus of fungi within the Rhytismataceae family. This parasitic genus is named after Vlad the Impaler, as the Wallachian nobleman is credited as the inspiration for the titular vampire in Bram Stoker's 1897 novel Dracula.

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Sabuloglossum is a fungal genus in the earth tongue family Geoglossaceae. Circumscribed in 2013, it contains the single widely distributed species Sabuloglossum arenarium, which has previously been placed in the genera Microglossum, Corynetes, Geoglossum, and Thuemenidium. The generic name derives from the Latin word sabulum and refers to its preference for sandy habitats.

Retroa is a genus of fungi in the family Phyllachoraceae.

Pustulipora is a genus of fungi within the Ceratostomataceae family. This is a monotypic genus, containing the single species Pustulipora corticola.

Phaeochoropsis mucosa is a plant pathogen infecting coconut trees. It causes lesions that are scattered over the tree leaves, although the necrosis is minimal.

Pellucida is a genus of fungi in the family Hyponectriaceae. This is a monotypic genus, containing the single species Pellucida pendulina.

Oxodeora is a genus of fungi in the family Phyllachoraceae. This is a monotypic genus, containing the single species Oxodeora petrakii.

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Fremitomyces is a genus of fungi in the family Phyllachoraceae.

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Camarotella costaricensis is a plant pathogen.