Calcipostia guttulata
Family Fomitopsidaceae · Updated October 2026
135US records
21states
Sepbusiest month
135 US records since 1887 (29 in the last 10 years)
Last seen Jul 25, 2026 (about 3 months ago) in Salt Point State Park, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New York, Washington and Michigan, and the busiest months are Sep, Aug and Jul. (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, Aug, Jul.
Where it's recorded
Top counties
- Humboldt County, CA (10) · latest Jul 30, 2025
- Sevier County, TN (7) · latest Aug 31, 1949
- Essex County, NY (6) · latest Aug 10, 2019
- Bonner County, ID (6) · latest Sep 30, 1968
- Tompkins County, NY (6) · latest Aug 22, 1925
- Clearwater County, MN (5) · latest Aug 22, 1971
- Grays Harbor County, WA (5) · latest Sep 28, 2024
- Pierce County, WA (5) · latest Jul 19, 2026
- King County, WA (5) · latest Oct 20, 1911
- Clallam County, WA (4) · latest Oct 16, 2025
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.