Tricholoma triste
Family Tricholomataceae · Updated October 2026
30US records
8states
Novbusiest month
30 US records since 1945 (25 in the last 10 years)
Last seen Jan 11, 2026 (about 9 months ago) near Occidental, Sonoma County, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Arizona and New York, and the busiest months are Nov, Sep 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: Nov, Sep, Oct.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 13 | Jan 11, 2026 |
| Arizona | 10 | Sep 9, 2025 |
| New York | 2 | Oct 24, 2023 |
| Montana | 1 | Oct 1, 1978 |
| Tennessee | 1 | Nov 25, 1945 |
| Alaska | 1 | – |
| Nevada | 1 | – |
| Washington | 1 | Nov 1, 2024 |
Top counties
- Yavapai County, AZ (4) · latest Sep 6, 2025
- Mendocino County, CA (3) · latest Nov 26, 2023
- Nevada County, CA (3) · latest Jul 14, 2024
- Coconino County, AZ (2) · latest Sep 9, 2025
- Apache County, AZ (2) · latest Aug 18, 2024
- Sonoma County, CA (2) · latest Jan 11, 2026
- Steuben County, NY (2) · latest Oct 24, 2023
- Sanders County, MT (1) · latest Oct 1, 1978
- Shasta County, CA (1) · latest May 26, 2023
- San Bernardino County, CA (1) · latest Sep 10, 2023
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.