Wrinkled Cortinarius
Cortinarius corrugatus · Family Cortinariaceae · Updated October 2026
462US records
22states
Augbusiest month
462 US records since 1898 (139 in the last 10 years)
Last seen Sep 21, 2026 (about 5 weeks ago) near Norwich, Southeastern Connecticut Planning Region, CT, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New Jersey, Pennsylvania and Michigan, and the busiest months are Aug, Jul and Sep. (Data as of October 26, 2026; records can lag by weeks.)
⚠ Never eat a wild mushroom based on this site. We show where fungi have been recorded, nothing more. We never say any mushroom is edible or safe, and you shouldn't decide that from any website, app or photo. Many deadly mushrooms look like harmless ones. If someone may have eaten a wild mushroom, call Poison Control at 1-800-222-1222 right away.
☠ Dangerous genus. The genus Cortinarius includes webcaps containing orellanine. Mushrooms in this group have caused serious or fatal poisonings.
Lookalike warning. Many mushrooms, including deadly ones, closely resemble each other, and the only reliable identification comes from an expert looking at the actual specimen (often with spore prints or microscopy). Never use a name, photo or record count on this page to decide what something is.
When it's recorded
Records by month, all years. Busiest: Aug, Jul, Sep.
Where it's recorded
Top counties
- Sussex County, NJ (38) · latest Jul 16, 2020
- Ocean County, NJ (29) · latest Oct 26, 2019
- Mercer County, NJ (23) · latest May 4, 2019
- Morris County, NJ (22) · latest Jul 20, 2019
- Burlington County, NJ (20) · latest Oct 6, 2018
- Hunterdon County, NJ (15) · latest Aug 25, 2019
- Cheboygan County, MI (13) · latest Aug 5, 1981
- Monmouth County, NJ (13) · latest Aug 22, 2015
- Warren County, NJ (12) · latest Jul 28, 2019
- Middlesex County, NJ (12) · latest Aug 18, 2019
More on this species from GBIF.
Bring along
🍄
Regional mushroom field guideSee on Amazon🍄
Folding mushroom knife with brushSee on Amazon🍄
Wicker foraging basketSee on Amazon🍄
10x hand lens / loupeSee on Amazon🍄
Spore print paperSee on AmazonAs an Amazon Associate we earn from qualifying purchases.