''Hygronarius'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

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

in the family

Cortinariaceae The Cortinariaceae are a large family of gilled mushrooms found worldwide, containing over 3200 species. The family takes its name from its largest genus, the varied species of the genus ''Cortinarius''. Many genera formerly in the Cortinariaceae ...

Taxonomy

The genus was created in 2022 when the family Cortinariaceae, which previously contained only the one genus of ''

Cortinarius ''Cortinarius'' is a globally distributed genus of fungus in the family Cortinariaceae. Its members are commonly known by the names cortinar and webcap. It is suspected to be the largest genus of agarics, containing over 2,000 widespread species ...

'' was reclassified based on genomic data and split into the genera of ''Cortinarius'', '' Aureonarius'', '' Austrocortinarius'', '' Calonarius'', '' Cystinarius'', ''Hygronarius'', ''

Mystinarius ''Mystinarius'' is a genus of fungi in the family Cortinariaceae. Taxonomy The genus was created in 2022 when the family Cortinariaceae, which previously contained only the one genus of ''Cortinarius'' was reclassified based on genomic data a ...

'', ''

Phlegmacium ''Phlegmacium'' is a genus of fungi in the family Cortinariaceae. Taxonomy The genus was created in 1877 by the German mycologist Friedrich Otto Wünsche based on the earlier 1821 classification of the ''Agaricus'' tribe ''Phlegmacium'' by ...

'', ''

Thaxterogaster ''Thaxterogaster'' is a genus of fungi in the family Cortinariaceae. Taxonomy The genus was created in 1951 by the German mycologist Rolf Singer to contain the novel species ''Thaxterogaster magellanicum'' and ''Thaxterogaster violaceum.'' ...

'' and ''

Volvanarius ''Volvanarius'' is a genus of fungi in the family Cortinariaceae. Taxonomy The genus was created in 2022 when the family Cortinariaceae, which previously contained only the one genus of ''Cortinarius'' was reclassified based on genomic data ...

''. The genus is further divided with subgenus and section classifications: * ''Hygronarius'' subgenus ''Hygronarius'' includes the section: ''Hygronarius.'' * ''Hygronarius'' subgenus ''Viscincisi'' includes the sections: ''Austroduracini'' and ''Viscincisi''.

Etymology

The name ''Hygronarius'' derives from the word

hygrophanous The adjective hygrophanous refers to the color change of mushroom tissue (especially the pileus surface) as it loses or absorbs water, which causes the pileipellis The pileipellis is the uppermost layer of hyphae in the pileus of a fungal fr ...

and ''Cortinarius''. This is in reference to the

caps of the species within this genera which display colour variations depending on moisture content.

Species

Species Fungorum ''Index Fungorum'' is an international project to index all formal names (Binomial nomenclature, scientific names) in the fungus Kingdom (biology), kingdom. As of 2015, the project is based at the Royal Botanic Gardens, Kew, one of three partn ...

accepted 5 species of ''Hygronarius''. # '' Hygronarius austroduracinus'' (M.M. Moser) Liimat. & Niskanen (2022) # '' Hygronarius parahumilis'' (Garnica) Liimat. & Niskanen (2022) # '' Hygronarius renidens'' (Fr.) Niskanen & Liimat. (2022) # '' Hygronarius viridibasalis'' (M.M. Moser) Liimat. & Niskanen (2022) # '' Hygronarius viscincisus'' (Soop) Niskanen & Liimat. (2022)

References

Agaricales genera Cortinariaceae {{Fungus-stub