Cinnamon Fiberhead
Inocybe cinnamomea · Family Inocybaceae · Updated October 2026
42US records
4states
Novbusiest month
42 US records since 1902 (2 in the last 10 years)
Last seen Jan 16, 2026 (about 9 months ago) near Shelton, Mason County, WA, a preserved specimen in INSDC Sequences. Most US records come from Washington, California and Oregon, and the busiest months are Nov, Oct and Apr. (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: Nov, Oct, Apr.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Washington | 36 | Jan 16, 2026 |
| California | 3 | Feb 26, 2025 |
| Oregon | 2 | Oct 12, 1947 |
| New York | 1 | Aug 7, 1902 |
Top counties
- San Juan County, WA (26) · latest Nov 21, 1976
- King County, WA (5) · latest Nov 25, 2013
- Mason County, WA (2) · latest Jan 16, 2026
- Santa Cruz County, CA (2) · latest Feb 26, 2025
- Suffolk County, NY (1) · latest Aug 7, 1902
- Del Norte County, CA (1) · latest Nov 5, 1937
- Thurston County, WA (1) · latest Oct 26, 1968
- Baker County, OR (1) · latest Oct 12, 1947
- Kitsap County, WA (1) · latest Nov 10, 1970
- Clackamas County, OR (1) · latest Oct 13, 1946
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.