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Zeller's Bolete

Zeller's Bolete (Xerocomellus zelleri), photo
Photo: Alan Rockefeller, CC BY 4.0 · iNaturalist
Xerocomellus zelleri · Family Boletaceae · Updated October 2026
248US records
6states
Novbusiest month
248 US records since 1910 (15 in the last 10 years)

Last seen Oct 30, 2025 (about 12 months ago) in Whatcom 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 Nov, Oct 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

Jan7Feb3Mar3Apr1May3Jun2Jul1Aug5Sep26Oct74Nov88Dec26

Records by month, all years. Busiest: Nov, Oct, Sep.

Where it's recorded

StateRecordsLatest sighting
California132Nov 5, 2024
Washington76Oct 30, 2025
Oregon26Oct 30, 2021
Idaho10Oct 9, 1980
Colorado2Sep 8, 1993
Kansas2–

Top counties

More on this species from GBIF.

Bring along

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Regional mushroom field guideSee on Amazon
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Folding mushroom knife with brushSee on Amazon
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Wicker foraging basketSee on Amazon
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10x hand lens / loupeSee on Amazon
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Spore print paperSee on Amazon

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