Coprinellus radians
Family Psathyrellaceae · Updated October 2026
88US records
27states
Junbusiest month
88 US records since 1890 (27 in the last 10 years)
Last seen Jan 6, 2026 (about 10 months ago) in Napa-Sonoma Marshes Wildlife Area, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Washington and Illinois, and the busiest months are Jun, Jul and Aug. (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: Jun, Jul, Aug.
Where it's recorded
Top counties
- King County, WA (7) · latest Apr 2, 2018
- Santa Barbara County, CA (4) · latest Jan 30, 2020
- Marin County, CA (3) · latest Feb 10, 2024
- Hawaii County, HI (3) · latest Jul 25, 1999
- Suffolk County, MA (3) · latest Mar 10, 1930
- Linn County, IA (3) · latest Jul 6, 2018
- Stearns County, MN (2) · latest Jul 7, 2001
- Ramsey County, MN (2) · latest Sep 18, 2014
- Centre County, PA (2) · latest Mar 4, 1976
- Cook County, IL (2) · latest Jul 12, 2003
More on this species from GBIF.
Bring along
🍄
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.