Aureonarius is a genus of fungi in the family Cortinariaceae.
[1] 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 and split into the genera of Cortinarius, Aureonarius, Austrocortinarius, Calonarius, Cystinarius, Hygronarius, Mystinarius, Phlegmacium, Thaxterogaster and Volvanarius.
[2] The genus is further divided with subgenus and section classifications:[2] The name Aureonarius derives from the Latin word 'aureus' meaning golden[3] and the suffix of the previous genus name Cortinarius.
The name refers to the golden colour of the mushrooms in this genus.
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