Monotypic Ascomycota genera

Sarcosphaera is a fungal genus within the Pezizaceae family. It used to be considered a monotypic genus, containing the single species Sarcosphaera coronaria, commonly known as the pink crown, the violet crown-cup, or the violet star cup. However, recent research revealed there are many species in the complex, two in Europe and North Africa (S. coronaria and S. crassa), other in North America (e.g., S. columbiana, S. pacifica, S. montana, S. gigantea) and Asia.

Caloscypha is a fungal genus in the family Caloscyphaceae (order Pezizales). A monotypic genus, it contains the single species Caloscypha fulgens, commonly known as the snowbank orange peel fungus, spring orange peel fungus, the golden cup, or the dazzling cup. It is a cup fungus, typically up to in diameter, with a bright to pale orange interior and orange; specimens that are old or bruised often have an olive-green discoloration, especially around the edges.

Chorioactis is a genus of fungi that contains the single species Chorioactis geaster. The mushroom is commonly known as the '''devil's cigar or the Texas star''' in the United States, while in Japan it is called . This extremely rare mushroom is notable for its unusual appearance and disjunct distribution; it is found only in select locales in Texas, Oklahoma, Japan, and Taiwan. The fruit body, which grows on the stumps or dead roots of cedar elms (in Texas) or dead oaks (in Japan), somewhat resembles a dark brown or black cigar before it splits open radially into a starlike arrangement of fou

Aquasphaeria is a genus of fungi in the family Clypeosphaeriaceae. This is a monotypic genus, containing the single species Aquasphaeria dimorphospora.

Aurophora is a genus of fungi in the family Sarcoscyphaceae. This is a monotypic genus, containing the single species Aurophora dochmia, which has a widespread distribution in pantropical areas.

Hapsidomyces is a genus of fungi within the Pezizaceae family. This is a monotypic genus, containing the single species Hapsidomyces venezuelensis.

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

Collodiscula is a genus of fungi in the family Xylariaceae. This is a monotypic genus, containing the single species Collodiscula japonica. Collodiscula japonica's anamorph is Acanthodochium collodisculae.

Carneopezizella is a genus of fungi in the family Helotiaceae. This is a monotypic genus, containing the single species Carneopezizella salicicola.

Glaziellaceae is a family of fungi in the order Pezizales that contains the single monotypic genus Glaziella. The type species Glaziella vesiculosa, originally collected in Cuba, was referred to the genus Xylaria by Miles Joseph Berkeley and Moses Ashley Curtis in 1869. A decade later, Berkeley circumscribed the genus Glaziella to contain a specimen collected in Brazil, apparently forgetting that he had earlier named it Xylaria aurantiaca.

Hypotarzetta is a genus of fungi in the family Pyronemataceae. It is monotypic, containing the single species Hypotarzetta insignis.

Halorosellinia is a genus of fungi in the family Xylariaceae. This is a monotypic genus, containing the single species Halorosellinia oceanica.

Ellurema is a genus of fungi in the family Sporocadaceae; according to the 2007 Outline of Ascomycota, the placement in this family is uncertain. This is a monotypic genus, containing the single species Ellurema indica.

Rossiomyces is a genus of fungi in the family Laboulbeniaceae. A monotypic genus, it contains the single species Rossiomyces falcatus.

Discoxylaria is a genus of fungi in the family Xylariaceae. This is a monotypic genus, containing the single species Discoxylaria myrmecophila.

Grimmicola is a genus of fungi in the family Helotiaceae. This is a monotypic genus, containing the single species Grimmicola parasiticus.

Emarcea is a genus of fungi in the family Xylariaceae; according to the 2007 Outline of Ascomycota, the placement in this family is uncertain. It is a monotypic genus, containing the single species Emarcea castanopsidicola.

Funiliomyces is a genus of fungi in the family Amphisphaeriaceae. This is a monotypic genus, containing the single species Funiliomyces biseptatus.

Argentinomyces is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Argentinomyces naviculisporus.

Antimanoa is a fungal genus in the division Ascomycota. The relationship of this taxon to other taxa within the division is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Antimanoa grisleae, originally collected from Venezuela. The genus and species were described as new to science in 1930 by German mycologist Hans Sydow.

Clypeophysalospora is a genus of fungi in the family Amphisphaeriaceae; according to the 2007 Outline of Ascomycota, the placement in this family is uncertain. This is a monotypic genus, containing the single species Clypeophysalospora latitans.

Retrostium is a fungal genus in the division Ascomycota. This is a monotypic genus, containing the single species Retrostium amphiroae, described as new to science from Japan in 1997. Species Fungorum places it within the family Spathulosporaceae, which would place it with the Spathulosporales Order.

Miladina is a genus of fungi in the family Pyronemataceae. A monotypic genus, it contains the single species Miladina lecithina.

Genabea is a genus of fungus in the family Pyronemataceae. The genus contains five species, and the type species is Genabea fragilis, a mycorrhizal truffle-like fungus found in Europe and North America.

Diehliomyces is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Diehliomyces microsporus.

Pseudociboria is a genus of fungi in the family Sclerotiniaceae. This is a monotypic genus, containing the single species Pseudociboria umbrina.

Valdensinia is a genus of fungi in the family Sclerotiniaceae. It is a monotypic genus, containing the single species Valdensinia heterodoxa.

Calceomyces is a genus of fungi in the family Xylariaceae. This is a monotypic genus, containing the single species Calceomyces lacunosus.

Heuflera is a fungal genus in the division Ascomycota.

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

Stellifraga is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Stellifraga cladoniicola.

Ascocalathium is a genus of fungi in the family Pyronemataceae. It is monotypic, containing the single species A. stipitatum.

Dyrithiopsis is a genus of fungi in the family Sporocadaceae. This is a monotypic genus, containing the single species Dyrithiopsis lakefuxianensis from Fuxian Lake in China.

Thindia is a genus of fungi in the family Sarcoscyphaceae. This is a monotypic genus, containing the single species Thindia cupressi, found in Uttar Pradesh, India.

Astomella is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Astomella neolitseae.

Lasiostictella is a genus of fungi in the Rhytismatales 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. This is a monotypic genus, containing the single species Lasiostictella bambusae.

Cenangiumella is a genus of fungi in the family Helotiaceae. This is a monotypic genus, containing the single species Cenangiumella rattanicola.

Sipmania is a genus of lichenized fungi within the order Arthoniales. The genus has been placed into the family Roccellaceae. This is a monotypic genus, containing the single species Sipmania peltata.

Plurisperma is a genus of fungi in the family Verrucariaceae; according to the 2007 Outline of Ascomycota, the placement in this family is uncertain. A monotypic genus, it contains the single species Plurisperma dalbergiae. The family Verrucariaceae is somewhat toxic to mammals due to the presence of vulpinic acid.

Chaetothiersia is a fungal genus in the family Pyronemataceae. It is monotypic, containing the single species Chaetothiersia vernalis collected from California.

Obolarina is a genus of fungi in the family Xylariaceae. This is a monotypic genus, containing the single species Obolarina dryophila.

Appendixia is a genus of fungi in the family Xylariaceae. This is a monotypic genus, containing the single species Appendixia closterium.

Marisolaris is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Marisolaris ansata.

Leucoconis is a genus of fungi in the Ascomycota phylum. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Leucoconis erysiphina.

Calycellinopsis is a fungal genus in the family Helotiaceae. This is a monotypic genus, containing the single species Calycellinopsis xishuangbanna, found in China.

Ascofascicula is a fungal genus in the division Ascomycota. The relationship of this taxon to other taxa within the phylum is unknown (incertae sedis), and it has not yet been placed with certainty into any class, order, or family. This is a monotypic genus, containing the single species Ascofascicula talaroluteoides.

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

Polydiscidium is a genus of fungi in the family Helotiaceae. This is a monotypic genus, containing the single species Polydiscidium martynii.

Vivantia is a genus of fungi in the family Xylariaceae. A monotypic genus, it contains the single species V. guadalupensis, described in 1996.

Thamnogalla is a fungal genus in the family Cordieritidaceae. It is a monotypic genus, containing the single lichenicolous species Thamnogalla crombii, found in Europe and North America. The genus was circumscribed in 1980 by David Leslie Hawksworth. The type species was originally described as Endocarpon crombiei by amateur botanist and collector William Mudd.

Pyrenocarpon is a fungal genus in the family Lichinaceae. It is monospecific, containing the single species Pyrenocarpon thelostomum, a lichen. This rare lichen is found only in shaded stream beds in parts of Britain, including Exmoor, the Pennines, and the Scottish Highlands. It was first described as a distinct genus in 1855 by the Italian lichenologist Vittore Trevisan based on its unique waxy fruiting structures. The species grows as a thin, reddish-brown crust on hard rocks that are kept constantly wet by flowing water.