Cystoderma granosum
Family Agaricaceae · Updated October 2026
37US records
13states
Sepbusiest month
37 US records since 1875 (3 in the last 10 years)
Last seen Aug 17, 2022 (about 4 years ago) in Cochise County, AZ, a preserved specimen in The New York Botanical Garden Herbarium (NY). Most US records come from New Jersey, New York and Pennsylvania, and the busiest months are Sep, Aug and Oct. (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, Oct.
Top counties
- Gloucester County, NJ (8) · latest Sep 3, 1987
- Essex County, NY (3)
- King County, WA (3)
- Allegheny County, PA (2) · latest Aug 25, 1906
- Cochise County, AZ (2) · latest Aug 17, 2022
- Chippewa County, MI (2) · latest 1917-10
- Hamilton County, NY (2) · latest Aug 26, 1902
- Randolph County, WV (1) · latest Sep 17, 1997
- Pocahontas County, WV (1) · latest Sep 18, 2000
- Venango County, PA (1) · latest Sep 25, 1937
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.