Agaricus urinascens
Family Agaricaceae · Updated October 2026
37US records
8states
Novbusiest month
37 US records since 1962 (3 in the last 10 years)
Last seen Nov 23, 2018 (about 8 years ago) near New York, Kings County, NY, a preserved specimen in International Barcode of Life project (iBOL). Most US records come from Washington, California and New York, and the busiest months are Nov, Oct and May. (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.
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, May.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Washington | 17 | 2002-12 |
| California | 13 | Dec 4, 1983 |
| New York | 2 | Nov 23, 2018 |
| Pennsylvania | 1 | Sep 22, 2000 |
| West Virginia | 1 | May 29, 2003 |
| Wisconsin | 1 | Sep 8, 2017 |
| Utah | 1 | May 16, 2000 |
| Idaho | 1 | Sep 5, 1973 |
Top counties
- King County, WA (9) · latest May 10, 1999
- Santa Cruz County, CA (6) · latest Nov 30, 1981
- San Mateo County, CA (3) · latest Dec 4, 1983
- Marin County, CA (2) · latest Nov 27, 1977
- Kings County, NY (2) · latest Nov 23, 2018
- Island County, WA (2) · latest Nov 2, 1975
- Thurston County, WA (2) · latest Oct 26, 1973
- Armstrong County, PA (1) · latest Sep 22, 2000
- Monterey County, CA (1) · latest Mar 3, 1979
- Ohio County, WV (1) · latest May 29, 2003
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.