Fungi
Xanthoperenniporia tenuis · Family Polyporaceae · Updated October 2026
248US records
39states
Octbusiest month
248 US records since 1855 (9 in the last 10 years)
Last seen May 11, 2025 (about 18 months ago) in Seton Falls Park, NY, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Virginia, Ohio and Connecticut, and the busiest months are Oct, Sep and Aug. (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: Oct, Sep, Aug.
Where it's recorded
Top counties
- Fairfax County, VA (19) · latest Aug 14, 1927
- Scott County, IN (11) · latest 1921-07
- Grant County, KY (11) · latest Sep 5, 1920
- Orange County, NC (10) · latest Oct 20, 1945
- Hamilton County, OH (10) · latest Oct 28, 1933
- Capitol Planning Region, CT (8) · latest Oct 14, 1939
- Arlington County, VA (7) · latest Jan 3, 1926
- Riley County, KS (5) · latest Apr 9, 2022
- Westchester County, NY (5) · latest Mar 28, 1915
- Naugatuck Valley Planning Region, CT (5) · latest Sep 26, 1933
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.