Cortinarius comptulus
Family Cortinariaceae · Updated October 2026
30US records
6states
Octbusiest month
30 US records since 1948 (23 in the last 10 years)
Last seen Oct 18, 2025 (about 12 months ago) in Olympic National Park, WA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Washington and Oregon, and the busiest months are Oct, Nov 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: Oct, Nov, Sep.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 18 | Mar 25, 2024 |
| Washington | 6 | Oct 18, 2025 |
| Oregon | 3 | Oct 26, 2021 |
| Colorado | 1 | Aug 24, 1974 |
| Alaska | 1 | Sep 6, 2021 |
| New York | 1 | Oct 21, 2023 |
Top counties
- Yuba County, CA (4) · latest Dec 2, 2023
- Clallam County, WA (3) · latest Oct 18, 2025
- Mono County, CA (3) · latest Sep 12, 2023
- Siskiyou County, CA (2) · latest Oct 23, 2023
- Lincoln County, OR (2) · latest Oct 26, 2021
- Sonoma County, CA (2) · latest Mar 25, 2024
- Humboldt County, CA (2) · latest Nov 17, 2023
- Sierra County, CA (1) · latest Oct 6, 1989
- Santa Cruz County, CA (1) · latest Dec 13, 2012
- Mendocino County, CA (1) · latest Nov 13, 2023
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.