Inocybe assimilata
Family Inocybaceae · Updated October 2026
65US records
12states
Sepbusiest month
65 US records since 1902 (1 in the last 10 years)
Last seen Jan 28, 2023 (about 4 years ago) near Fort Bragg, Mendocino County, CA, a preserved specimen in International Barcode of Life project (iBOL). Most US records come from Washington, New York and Oregon, and the busiest months are Sep, Jun and Nov. (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: Sep, Jun, Nov.
Where it's recorded
Top counties
- King County, WA (9) · latest Nov 24, 2007
- Bronx County, NY (7) · latest Jun 19, 1903
- Clallam County, WA (4) · latest Sep 22, 2001
- Delaware County, NY (3)
- Lewis County, WA (3) · latest Oct 10, 2014
- Snohomish County, WA (3) · latest Jun 21, 1956
- Kitsap County, WA (3) · latest Jun 10, 2001
- St. Lawrence County, NY (2) · latest Sep 27, 1997
- Pike County, PA (2) · latest Jun 22, 1996
- Morris County, NJ (2) · latest Aug 10, 1997
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.