Boletus subalpinus
Family Boletaceae · Updated October 2026
93US records
3states
Sepbusiest month
93 US records since 1964 (14 in the last 10 years)
Last seen Oct 3, 2026 (about 3 weeks ago) in Shasta National Forest, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Oregon and Washington, and the busiest months are Sep, Oct 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: Sep, Oct, Aug.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 79 | Oct 3, 2026 |
| Oregon | 12 | Aug 9, 2025 |
| Washington | 2 | Sep 27, 2009 |
Top counties
- Sierra County, CA (29) · latest Sep 22, 2023
- Siskiyou County, CA (23) · latest Oct 3, 2026
- Fresno County, CA (5) · latest Sep 13, 1975
- Nevada County, CA (4) · latest Sep 12, 2018
- Tehama County, CA (3) · latest Oct 11, 1976
- Shasta County, CA (3) · latest Oct 10, 1976
- Clackamas County, OR (3) · latest Aug 4, 2003
- Douglas County, OR (3) · latest Oct 11, 2002
- Lane County, OR (3) · latest Aug 9, 2025
- El Dorado County, CA (2) · latest Sep 2, 1984
More on this species from GBIF.
Bring along
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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.