Cortinarius orellanus
| Cortinarius orellanus | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Fungi | 
| Division: | Basidiomycota | 
| Class: | Agaricomycetes | 
| Order: | Agaricales | 
| Family: | Cortinariaceae | 
| Genus: | Cortinarius | 
| Species: | C. orellanus  | 
| Binomial name | |
| Cortinarius orellanus Fries, 1838  | |
| Synonyms | |
| Cortinarius orellanus | |
|---|---|
| Gills on hymenium | |
| Cap is flat | |
| Hymenium is adnate | |
| Stipe has a ring | |
| Spore print is reddish-brown | |
| Ecology is mycorrhizal | |
| Edibility is deadly | |
Cortinarius orellanus, commonly known as the fool's webcap or fools webcap, is a species of deadly fungus in the family Cortinariaceae native to Europe. Within the genus it belongs to a group known as the Orellani, all of which are highly toxic—eating them results in kidney failure, which is often irreversible. The mushroom is generally tan to brown all over.