The Inocybaceae are a

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

fungi A fungus (plural, : fungi or funguses) is any member of the group of Eukaryote, eukaryotic organisms that includes microorganisms such as yeasts and Mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified ...

in the order

Agaricales The fungal order Agaricales, also known as gilled mushrooms (for their distinctive gills) or euagarics, contains some of the most familiar types of mushrooms. The order has 33 extant families, 413 genera, and over 13,000 described species, a ...

. Members of this family have a widespread distribution in

tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

and

temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...

areas.

Taxonomy

The type genus of the Inocybaceae, ''

Inocybe ''Inocybe'' is a large genus of mushroom-forming fungi with over 1400 species, including all forms and variations. Members of ''Inocybe'' are mycorrhizal, and some evidence shows that the high degree of speciation in the genus is due to adaptatio ...

'', had traditionally been placed within the family Cortinariaceae. Despite this, Jülich placed the genus in its own family, the Inocybaceae. Later, the Cortinariaceae were shown to be

polyphyletic A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of conver ...

. Additionally,

phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

analyses of

RPB1 DNA-directed RNA polymerase II subunit RPB1, also known as RPB1, is an enzyme that in humans is encoded by the ''POLR2A'' gene. Function This gene encodes the largest subunit of RNA polymerase II, the polymerase responsible for synthesizing ...

, RPB2 and nLSU- rDNA regions from a variety of ''Inocybe'' and related taxa would support Jülich's recognition of ''Inocybe'' at the family level. In their ''Dictionary of the Fungi'', Kirk ''et al.'' (2008) did not distinguish between Inocybaceae and Crepidotaceae, but rather merged them into one family they called Inocybaceae. The literature has since then split up the classification given by Kirk ''et al.'' (2008) into not only Inocybaceae and Crepidotaceae, but also Tubariaceae and Chromocyphellaceae. In a 2019 molecular study, Matheny and colleagues used six genes to determine relationships within the family. They recovered ''Nothocybe'' as sister to ''Inocybe'', while members of ''Inocybe'' section ''Rimosae'' formed a lineage that diverged from the ancestor of the preceding two, and hence reclassified it as a genus '' Pseudosperma''. Another branch gives rise to four lineages - the genus '' Auritella'', what was ''Inocybe'' subgenus ''Mallocybe'' (now '' Mallocybe''), '' Tubariomyces'', and '' Inosperma'' (previously ''Inocybe'' subgenus ''Inosperma'').

References

{{Taxonbar, from=Q514700 Agaricales families

Taxonomy

See also

References