Stringy Butt Rot
Poriella subacida · Family Polyporaceae · Updated October 2026
976US records
41states
Sepbusiest month
976 US records since 1873 (100 in the last 10 years)
Last seen Apr 4, 2026 (about 7 months ago) near Lewisville, Denton County, TX, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New Jersey, New York and Idaho, 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
- Bonner County, ID (71) · latest Jun 17, 1948
- Sussex County, NJ (36) · latest Sep 28, 2019
- Ocean County, NJ (31) · latest Oct 26, 2019
- Mercer County, NJ (31) · latest May 4, 2019
- Tompkins County, NY (30) · latest Sep 6, 1952
- Essex County, NY (23) · latest Sep 28, 1933
- Morris County, NJ (22) · latest Jul 20, 2019
- Burlington County, NJ (20) · latest Oct 6, 2018
- Benzie County, MI (17) · latest 1908-09
- Orange County, NC (17) · latest Feb 1, 2002
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.