Chaga
Inonotus obliquus · Family Hymenochaetaceae · Updated October 2026
438US records
32states
Augbusiest month
438 US records since 1875 (352 in the last 10 years)
Last seen Sep 22, 2026 (about 5 weeks ago) in Lake County, MN, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Minnesota, New Hampshire and New York, and the busiest months are Aug, Sep and May. (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, Sep, May.
Where it's recorded
Top counties
- St. Louis County, MN (41) · latest Nov 24, 2024
- Sullivan County, NH (32) · latest Apr 6, 2026
- Kenai Peninsula Borough, AK (20) · latest Mar 28, 2025
- Lake County, MN (18) · latest Sep 22, 2026
- Tompkins County, NY (13) · latest Jul 6, 2025
- Rensselaer County, NY (13) · latest Mar 9, 2025
- Cheshire County, NH (11) · latest Nov 23, 2025
- Houghton County, MI (10) · latest Mar 30, 2026
- Randolph County, WV (8) · latest Jul 25, 2026
- Tucker County, WV (8) · latest May 16, 2026
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.