Mushroom Sightings
Mushroom Sightings
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Pirex concentricus

Pirex concentricus (Pirex concentricus), photo
Photo: Alan Rockefeller, CC BY 4.0 · iNaturalist
Family Phanerochaetaceae · Updated October 2026
35US records
3states
Janbusiest month
35 US records since 1887 (26 in the last 10 years)

Last seen May 24, 2025 (about 17 months 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 Jan, Apr 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

Jan7Feb2Mar1Apr5May3Jun0Jul1Aug0Sep0Oct2Nov3Dec4

Records by month, all years. Busiest: Jan, Apr, Dec.

Where it's recorded

StateRecordsLatest sighting
California22May 24, 2025
Oregon10Jan 17, 2025
Washington3Nov 1, 2024

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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