Bitter Bracket
Amaropostia stiptica · Family Fomitopsidaceae · Updated October 2026
84US records
13states
Sepbusiest month
84 US records since 1884 (5 in the last 10 years)
Last seen May 14, 2024 (about 2 years ago) near Pine Hills, Humboldt County, CA, a preserved specimen in International Barcode of Life project (iBOL). Most US records come from Wisconsin, Illinois and Michigan, and the busiest months are Sep, Aug and Oct. (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, Oct.
Where it's recorded
Top counties
- Chippewa County, MI (9) · latest 1916-09
- DuPage County, IL (7) · latest Oct 26, 1919
- Dane County, WI (6) · latest 1910-09
- Cook County, IL (5) · latest 1909-06
- Macon County, IL (5) · latest 1910-10
- Vilas County, WI (4) · latest 1904-08
- Forest County, WI (3) · latest 1905-08
- Grand Traverse County, MI (3) · latest 1909-09
- Bonner County, ID (3) · latest 1915-05
- Tompkins County, NY (2) · latest Mar 15, 1905
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.