Milk-White Toothed Polypore
Irpex lacteus · Family Irpicaceae · Updated October 2026
2,616US records
49states
Octbusiest month
2,616 US records since 1852 (1,001 in the last 10 years)
Last seen Oct 3, 2026 (about 3 weeks ago) near Cordry Sweetwater Lakes, Brown County, IN, 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 Pennsylvania, 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
- Cook County, IL (77) · latest Sep 22, 2026
- Riley County, KS (75) · latest Sep 10, 2023
- Dane County, WI (58) · latest Jan 27, 2024
- Onondaga County, NY (57) · latest Mar 20, 2026
- Gloucester County, NJ (52) · latest Sep 15, 2019
- Montgomery County, MD (51) · latest Mar 3, 2024
- Tompkins County, NY (49) · latest Oct 2, 2025
- District of Columbia, DC (46) · latest Apr 2, 2026
- Hamilton County, OH (45) · latest Mar 14, 2026
- Mercer County, NJ (38) · latest May 4, 2019
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.