The Russulales are an order of the Agaricomycetes,. According to the Dictionary of the Fungi, the order consists of 12 families, 80 genera, and 1767 species. According to Species Fungorum, the order contains 13 families, 117 genera, and 3,060 species.
Calvatia is a genus of puffball mushrooms that includes the spectacular giant puffball C. gigantea. It was formerly classified within the now-obsolete order Lycoperdales, which, following a restructuring of fungal taxonomy brought about by molecular phylogeny, has been split; the puffballs, Calvatia spp. are now placed in the family Agaricaceae of the order Agaricales.
The Hygrophoropsidaceae are a family of mushrooms that are gilled in appearance but lie within the Boletales. The family contains 18 species within two genera: Leucogyrophana and Hygrophoropsis, with the best-known member being the "false chanterelle", Hygrophoropsis aurantiaca. Hygrophoropsidaceae was circumscribed by French mycologist Robert Kühner in 1980, with Hygrophoropsis as the type genus. Unlike most members of the Boletales, Hygrophoropsidaceae species are saprophytic wood-rotting fungi that cause brown rot in their hosts. The genera Austropaxillus and Tapinella, once placed in this family, are now classified in the Serpulaceae and Tapinellaceae, respectively.
Terfezia is a genus of truffle-like fungi within the Pezizaceae family. Terfezia species are commonly known as desert truffles. Some authorities consider this the type genus of the family Terfeziaceae, although phylogenetic analysis suggests that it nests within the Pezizaceae. The Dictionary of the Fungi suggests that the genus contains 12 species. A recent (2011) publication used molecular analysis to show that the American Terfezia species had been incorrectly classified, and moved Terfezia spinosa and Terfezia longii to Mattirolomyces and Stouffera, respectively; as a result, no Terfezia species are known to exist in North America.
The Meripilaceae are a family of fungi in the order Polyporales. The family was circumscribed by Swiss mycologist Walter Jülich in 1982 with Meripilus as the type genus. A 2008 estimate placed 7 genera and 57 species in Meripilaceae. As of April 2018, Index Fungorum accepts 74 species in the family.
Geopyxis is a genus of fungi in the family Pyronemataceae. The genus has a widespread distribution. Molecular phylogenetic studies published in 2007 suggest that the genus is not monophyletic.
Claussenomyces is a genus of fungi in the family Helotiaceae. Species grow as saprophytes on decaying and decorticated wood, cones, or sap. Fruitbodies are turbinate to pulvinate, measuring up to 0.6 mm in both height and diameter. The flesh has an elastic to gelatinous texture.
Ramariopsis is a genus of coral fungi in the family Clavariaceae. The genus has a collectively widespread distribution and contains about 40 species. The name means 'having the appearance of Ramaria'.
Ceriporia is a widely distributed genus of crust fungi.
Bovistella is a genus of puffball fungi in the family Agaricaceae. The genus was circumscribed by mycologist Andrew Price Morgan in 1892.
Cystolepiota is a genus of mushroom-forming fungi in the family Agaricaceae.
Stanglomyces is a genus of fungi in the family Tricholomataceae. This is a monotypic genus, containing the single species Stanglomyces taxophilus, found in South America. The species was described as new to science by Jörg Raithelhuber in 1985.
Pseudotyphula is a genus of fungus in the family Marasmiaceae. The genus is monotypic, containing the single species Pseudotyphula ochracea, found in North America. The genus was circumscribed by British mycologist E.J.H. Corner in 1953.
Cerocorticium is a genus of seven species of crust fungi in the family Meruliaceae.
Grammothele is a genus of poroid crust fungi in the family Polyporaceae.
Lopharia is a genus of fungi in the family Polyporaceae. The genus was circumscribed by Károly Kalchbrenner and Peter MacOwan in 1881.
Clavaria is a genus of fungi in the family Clavariaceae. Species of Clavaria produce basidiocarps that are either cylindrical to club-shaped or branched and coral-like. They are often grouped with similar-looking species from other genera, when they are collectively known as the clavarioid fungi. All Clavaria species are terrestrial and most are believed to be saprotrophic. In Europe, they are typical of old, mossy, unimproved grassland. In North America and elsewhere, they are more commonly found in woodlands.
Coronicium is a genus of fungi in the Pterulaceae family. The genus has a widespread distribution in north temperate areas, and contains five species: C. alboglaucum, C. gemmiferum, C. molokaiense, C. proximum, C. thymicola.
Otidea is a genus of fungi in the family Pyronemataceae. The genus is widely distributed in northern temperate regions.
Clavulinopsis sulcata is a clavarioid fungus in the family Clavariaceae and is the type species of the genus Clavulinopsis. It forms very long, slender, cylindrical pinkish or orange fruiting bodies that grow on the ground among plant litter.
