Blue-Black Tooth
Phellodon atratus · Family Thelephoraceae · Updated October 2026
50US records
7states
Octbusiest month
50 US records since 1931 (30 in the last 10 years)
Last seen Jan 2, 2026 (about 10 months ago) near La Honda, San Mateo County, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Washington and Oregon, and the busiest months are Oct, Nov and Dec. (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, Nov, Dec.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 29 | Jan 2, 2026 |
| Washington | 12 | Nov 10, 2020 |
| Oregon | 4 | Oct 21, 2021 |
| Indiana | 2 | Aug 5, 1978 |
| Idaho | 1 | Oct 16, 1968 |
| Tennessee | 1 | Aug 5, 2009 |
| Alaska | 1 | Aug 7, 2022 |
Top counties
- Humboldt County, CA (15) · latest Oct 22, 2025
- Mendocino County, CA (7) · latest Jan 18, 2025
- Del Norte County, CA (5) · latest Mar 8, 2024
- Jefferson County, WA (3) · latest Oct 21, 2006
- Lane County, OR (2) · latest Oct 21, 2021
- Fountain County, IN (2) · latest Aug 5, 1978
- Kitsap County, WA (2) · latest Nov 26, 1995
- Island County, WA (2) · latest Nov 12, 1970
- Tillamook County, OR (2) · latest Oct 18, 2019
- Pacific County, WA (2) · latest Nov 10, 2020
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.