The Cystofilobasidiaceae are a family of fungi in the order Cystofilobasidiales. Phylogenetic analyses shows that this family is clearly distinct from other yeast-like families of the Tremellomycetes. The family currently contains the single genus Cystofilobasidium. Additional genera previously referred to the Cystofilobasidiaceae are now placed in the Mrakiaceae.
The Agaricostilbomycetes are a class of fungi in the subdivision Pucciniomycotina of the Basidiomycota. The class consists of a single order, six families, and 15 genera. Most species are known only from their yeast states. Where known, basidiocarps (fruitbodies) are typically small and stilboid (pin-shaped).
The Microbotryomycetes are a class of fungi in the subdivision Pucciniomycotina of the Basidiomycota. The class currently contains eight orders, plus three additional, unassigned families, plus seven additional, unassigned genera. Many species are known only from their yeast states. Species with hyphal states typically produce auricularioid basidia and are often parasitic on other fungi or plants. Several species in the genera Rhodotorula and Sporobolomyces are opportunistic human pathogens.
Filobasidium is a genus of fungi in the family Filobasidiaceae. Most species are only known from their yeast states, but some produce hyphae with haustorial cells, indicating that they are parasites of other fungi. Basidia are tubular with terminal, sessile basidiospores. Basidiocarps are not formed.
Bullera is a genus of fungi in the family Bulleraceae. The genus, which comprises both anamorphic and teleomorphic forms, formerly contained some 35 species. Molecular research, based on cladistic analysis of DNA sequences, has however assigned most of these species elsewhere and reduced the genus Bullera to just four species. Anamorphic forms are yeasts; teleomorphic forms produce septate basidia resembling those of Tremella species, but are not known to produce basidiocarps.
Bulleribasidium is a genus of fungi in the family Bulleribasidiaceae. The genus currently contains some eleven species. The type species is a parasite of other fungi, its teleomorph having septate basidia and haustorial cells on its hyphae that connect to the host hyphae. Most species are, however, only known from their yeast states.
Dioszegia is a genus of fungi in the family Bulleribasidiaceae. The genus, comprising anamorphic forms, has a widespread distribution, and contains around 16 species.
Trimorphomyces is a genus of fungi in the family Trimorphomycetaceae. The genus currently contains two species. The type species is a parasite of another fungus in the genus Arthrinium, forming small gelatinous basidiocarps containing distinctive twinned conidia.
Leucosporidium is a genus of fungi in the subdivision Pucciniomycotina. The genus comprises fungi that are mostly known from their yeast states, though some produce hyphal states in culture that give rise to teliospores from which auricularioid basidia emerge. Species known only from their anamorphic yeast states were formerly referred to the genus Leucosporidiella, but, following changes to the International Code of Nomenclature for algae, fungi, and plants, the practice of giving different names to teleomorph and anamorph forms of the same fungus was discontinued, meaning that Leucosporidiella became a synonym of the earlier name Leucosporidium. Species have been isolated predominantly from cold environments and are regarded as psychrotolerant.
The Agaricostilbales are an order of fungi in the class Agaricostilbomycetes. The order consists of six families and 15 genera.
The Chionosphaeraceae are a family of fungi in the order Agaricostilbales. The family contains six genera. Some species form small, stilboid (pin-shaped) fruitbodies. Others are known only from their yeast states.
Colacogloea is a genus of fungi belonging to the class Microbotryomycetes. Most species in the genus are known only from their yeast states. Where known, basidiocarps have auricularioid basidia and occur as parasites on or in the fruit bodies of other fungi.
The Mrakiaceae are a family of fungi in the order Cystofilobasidiales. Phylogenetic analyses shows that this family is clearly distinct from other yeast-like families of the Tremellomycetes. The family had six genera in 2015.
Cystofilobasidium is a genus of fungi in the family Cystofilobasidiaceae. Species occur as yeasts, but produce filamentous sexual states that form dikaryote teliospores, from which the unicellular basidia are formed. The hyphae usually have dolipore septa without a parenthesome, and their cell walls contain xylose. The genus currently contains nine species worldwide.
The Bulleraceae are a family of fungi in the order Tremellales. The family currently contains five genera. Some species produce gelatinous basidiocarps and were formerly placed in the genus Tremella. Most, however, are only known from their yeast states.
The Piskurozymaceae are a family of fungi in the order Filobasidiales. Most species are only known from their yeast states, but some produce filamentous sexual states with basidia that are parasitic on other fungi. The family currently contains two genera.
Solicoccozyma is a genus of fungi in the family Piskurozymaceae. Species have only been isolated in their yeast states, several of which were formerly referred to the genus Cryptococcus, but can produce filamentous states with basidia in culture. Nine species have been described worldwide.
The Trimorphomycetaceae are a family of fungi in the order Tremellales. The family currently contains four genera. Some species produce filamentous sexual states and are parasites of other fungi. Most, however, are only known from their yeast states.
The Carcinomycetaceae are a family of fungi in the order Tremellales. The family currently contains a single genus. Some species produce filamentous sexual states with basidia and are parasites of other fungi. Some, however, are only known from their yeast states.
The Spiculogloeales are an order of fungi in the subdivision Pucciniomycotina of the Basidiomycota. The order is currently monotypic, consisting of a single family, the Spiculogloeaceae. Species in the genus Phyllozyma are currently known only from their yeast states. Species in the genus Spiculogloea form hyphal states that produce auricularioid basidia and are parasitic on other fungi.
