Indigo Oyster
Hohenbuehelia atrocoerulea · Family Pleurotaceae · Updated October 2026
84US records
16states
Augbusiest month
84 US records since 1884 (4 in the last 10 years)
Last seen Oct 14, 2021 (about 5 years ago) near North Mankato, Blue Earth County, MN, a preserved specimen in Bell Museum fungi. Most US records come from New York, Vermont and Pennsylvania, and the busiest months are Aug, 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: Aug, Oct, Jun.
Where it's recorded
Top counties
- Addison County, VT (10) · latest Aug 8, 1897
- Gloucester County, NJ (7) · latest Feb 2, 1890
- Tompkins County, NY (7) · latest Oct 15, 1919
- Erie County, NY (4)
- Bronx County, NY (3) · latest Jun 30, 1985
- Montgomery County, VA (3) · latest Sep 26, 1995
- Philadelphia County, PA (3)
- La Crosse County, WI (3) · latest Jul 23, 2005
- Orange County, VT (3) · latest 1897-08
- Essex County, NY (2) · latest Jul 17, 1929
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.