Agrocybe arvalis
Family Strophariaceae · Updated October 2026
36US records
12states
Sepbusiest month
36 US records since 1917 (10 in the last 10 years)
Last seen Sep 29, 2024 (about 2 years ago) near Cockeysville, Baltimore County, MD, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New York, Pennsylvania and Tennessee, and the busiest months are Sep, Aug 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.
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, Aug, Nov.
Top counties
- Allegheny County, PA (8) · latest Aug 17, 2019
- Bronx County, NY (6) · latest Oct 2, 2023
- Knox County, TN (5) · latest Aug 10, 2021
- Marion County, WV (3) · latest 1917
- Suffolk County, NY (2) · latest Sep 20, 2022
- Pend Oreille County, WA (2) · latest Jun 13, 1920
- Ramsey County, MN (1) · latest Sep 15, 2013
- Lorain County, OH (1) · latest Sep 10, 1989
- Nassau County, NY (1) · latest May 18, 2008
- Strafford County, NH (1) · latest Sep 9, 2020
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.