Grass Oysterling
Crepidotus epibryus · Family Crepidotaceae · Updated October 2026
68US records
20states
Sepbusiest month
68 US records since 1899 (4 in the last 10 years)
Last seen Jun 10, 2019 (about 7 years ago) near Wightmans Grove, Sandusky County, OH, a preserved specimen in EUKARYOME: the rRNA gene reference database for identification of eukaryotes. Most US records come from Pennsylvania, California and Washington, and the busiest months are Sep, Oct and Jun. (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, Oct, Jun.
Where it's recorded
Top counties
- King County, WA (4) · latest Oct 16, 1976
- Santa Clara County, CA (4) · latest Jan 11, 1912
- Orange County, NC (3) · latest Sep 8, 1998
- Latah County, ID (3) · latest Sep 30, 1920
- Evangeline Parish, LA (2) · latest Jul 6, 1974
- Fayette County, PA (2) · latest Jun 18, 1940
- Westmoreland County, PA (2) · latest Sep 3, 1947
- Allegheny County, PA (2) · latest Aug 25, 1944
- Franklin County, MA (2) · latest Sep 28, 1958
- Highland County, OH (2) · latest Nov 26, 1967
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.