Cortinarius harrisonii
Family Cortinariaceae · Updated October 2026
45US records
6states
Sepbusiest month
45 US records since 1977 (36 in the last 10 years)
Last seen Aug 24, 2026 (about 2 months ago) near Groton, Middlesex County, MA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Pennsylvania, North Carolina and New York, and the busiest months are Sep, Aug and Jun. (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: Sep, Aug, Jun.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Pennsylvania | 14 | Aug 15, 2026 |
| North Carolina | 13 | Aug 26, 2023 |
| New York | 6 | Sep 16, 2023 |
| Massachusetts | 6 | Aug 24, 2026 |
| Tennessee | 4 | Jun 8, 2026 |
| Kansas | 2 | Jun 6, 2005 |
Top counties
- Transylvania County, NC (7) · latest Aug 26, 2023
- Clarion County, PA (7) · latest Sep 23, 2022
- Henderson County, NC (5) · latest Aug 24, 2023
- Oswego County, NY (3) · latest Aug 26, 2020
- Somerset County, PA (3) · latest Sep 11, 2021
- Barnstable County, MA (3) · latest Oct 4, 2021
- Ulster County, NY (2) · latest Sep 16, 2023
- Hampshire County, MA (2) · latest Sep 24, 1977
- Wabaunsee County, KS (2) · latest Jun 6, 2005
- Sevier County, TN (2) · latest Sep 5, 2013
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.