Red-Footed Bitter Bolete
Caloboletus rubripes · Family Boletaceae · Updated October 2026
134US records
10states
Octbusiest month
134 US records since 1887 (41 in the last 10 years)
Last seen Sep 1, 2026 (about 8 weeks ago) in Snohomish County, WA, 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 Sep. (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, Sep.
Where it's recorded
Top counties
- Mendocino County, CA (37) · latest Jul 13, 2021
- Humboldt County, CA (15) · latest Oct 15, 2022
- Siskiyou County, CA (9) · latest Jun 7, 2026
- Sierra County, CA (7) · latest Sep 13, 1989
- Pierce County, WA (6) · latest Sep 12, 2024
- Tuolumne County, CA (4) · latest Oct 25, 1975
- Clallam County, WA (4) · latest Oct 17, 2025
- El Dorado County, CA (3) · latest Jun 17, 2024
- Amador County, CA (3) · latest Oct 2, 1982
- Shasta County, CA (3) · latest Sep 28, 2024
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.