Aureonarius callisteus

Aureonarius callisteus is a species of agaric fungus in the family Cortinariaceae. The common name of the species is tawny webcap.

Taxonomy
It was first described by Elias Magnus Fries in 1818 as Agaricus callisteus. Two decades later he transferred it to the genus Cortinarius in his 1838 work Epicrisis Systematis Mycologici.

In 2022 the species was transferred from Cortinarius and reclassified as Aureonarius callisteus based on genomic data.