Inocybe kauffmanii
Family Inocybaceae · Updated October 2026
47US records
5states
Octbusiest month
47 US records since 1936 (7 in the last 10 years)
Last seen Dec 8, 2025 (about 11 months ago) in McKay Community Forest, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Washington, California 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 Inocybe includes fibercaps containing muscarine. 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 |
|---|---|---|
| Washington | 34 | Nov 22, 1980 |
| California | 5 | Dec 8, 2025 |
| Oregon | 5 | Nov 22, 2022 |
| Michigan | 2 | Aug 6, 1953 |
| Arizona | 1 | Sep 2, 2024 |
Top counties
- King County, WA (8) · latest Nov 22, 1980
- Pierce County, WA (7) · latest Oct 12, 1971
- Snohomish County, WA (5) · latest Oct 1, 1968
- Thurston County, WA (5) · latest Oct 27, 1970
- Mendocino County, CA (4) · latest Dec 18, 2024
- Lewis County, WA (3) · latest Oct 25, 1975
- Lane County, OR (2) · latest Nov 22, 2022
- Clackamas County, OR (2) · latest Oct 12, 1947
- Grays Harbor County, WA (2) · latest Oct 11, 1970
- San Juan County, WA (2) · latest Nov 8, 1969
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.