Parasitic Clitocybe
Clitocybe sclerotoidea · Family Tricholomataceae · Updated October 2026
72US records
3states
Novbusiest month
72 US records since 1934 (14 in the last 10 years)
Last seen Apr 6, 2025 (about 19 months ago) near Forest Ranch, Butte County, CA, 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 Nov, Oct and Jan. (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 Clitocybe includes species 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: Nov, Oct, Jan.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 32 | Apr 6, 2025 |
| Washington | 26 | Nov 30, 2021 |
| Oregon | 14 | Oct 26, 2022 |
Top counties
- Mendocino County, CA (7) · latest Jan 11, 2025
- Benton County, OR (6) · latest Dec 21, 2020
- Marin County, CA (6) · latest Aug 14, 2024
- San Mateo County, CA (6) · latest Feb 19, 2021
- Pierce County, WA (6) · latest Mar 30, 1989
- King County, WA (5) · latest Oct 3, 1982
- Snohomish County, WA (5) · latest Oct 26, 1958
- Alameda County, CA (4) · latest 1943-04
- Thurston County, WA (4) · latest Nov 13, 1971
- Washington County, OR (3) · latest Nov 9, 1977
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.