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Mushroom Sightings
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Madrone Micro

Madrone Micro (Micromphale arbuticola), photo
Photo: reagan peschke, CC BY 4.0 · iNaturalist via GBIF
Micromphale arbuticola · Family Omphalotaceae · Updated October 2026
40US records
1states
Decbusiest month
40 US records since 1960 (13 in the last 10 years)

Last seen Feb 14, 2025 (about 20 months ago) near Santa Cruz, Santa Cruz County, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, and the busiest months are Dec, Feb and Jan. (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

Jan10Feb10Mar1Apr0May0Jun0Jul0Aug0Sep0Oct0Nov8Dec11

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

Where it's recorded

StateRecordsLatest sighting
California40Feb 14, 2025

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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