Coprinopsis romagnesiana
Family Psathyrellaceae · Updated October 2026
36US records
12states
Octbusiest month
36 US records since 1908 (33 in the last 10 years)
Last seen Aug 1, 2026 (about 3 months ago) in Coconino National Forest, AZ, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Pennsylvania and Illinois, and the busiest months are Oct, Nov and May. (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: Oct, Nov, May.
Top counties
- Linn County, IA (4) · latest Oct 8, 2019
- Cook County, IL (4) · latest Nov 1, 2025
- Beaver County, PA (4) · latest Oct 15, 2023
- Montgomery County, MD (3) · latest May 16, 2022
- Apache County, AZ (2) · latest Aug 14, 2023
- Coconino County, AZ (2) · latest Aug 1, 2026
- Salt Lake County, UT (2) · latest Oct 19, 2025
- Henry County, IL (1) · latest 1908-05
- Mono County, CA (1) · latest Jun 29, 2024
- Denver County, CO (1) · latest Sep 25, 2012
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.