Beach Brittlestem
Psathyrella ammophila · Family Psathyrellaceae · Updated October 2026
48US records
14states
Novbusiest month
48 US records since 1904 (12 in the last 10 years)
Last seen Nov 15, 2025 (about 11 months ago) near Norton Shores, Muskegon County, MI, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Washington, California and Alaska, and the busiest months are Nov, Oct and Jul. (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, Jul.
Where it's recorded
Top counties
- Northwest Arctic Borough, AK (6) · latest Aug 13, 2000
- Northampton County, VA (5) · latest Nov 5, 1995
- McIntosh County, GA (4) · latest Oct 15, 1994
- Kittitas County, WA (4) · latest Oct 13, 1981
- Grays Harbor County, WA (3) · latest Nov 20, 2020
- Los Angeles County, CA (2) · latest Feb 29, 2024
- Carteret County, NC (2) · latest Nov 13, 1993
- Erie County, OH (2) · latest Jul 7, 1904
- North Slope Borough, AK (2) · latest Jul 31, 2001
- Philadelphia County, PA (1) · latest Aug 5, 1939
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.