Frosty Bonnet
Mycena tenerrima · Family Mycenaceae · Updated October 2026
97US records
13states
Janbusiest month
97 US records since 1896 (61 in the last 10 years)
Last seen Jun 27, 2026 (about 4 months ago) in Central Park, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, North Carolina and Washington, and the busiest months are Jan, Jul 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: Jan, Jul, Oct.
Where it's recorded
Top counties
- Humboldt County, CA (13) · latest Oct 15, 2025
- Santa Cruz County, CA (8) · latest Apr 28, 2025
- Tompkins County, NY (7) · latest Jul 17, 1917
- Contra Costa County, CA (7) · latest Jan 4, 2026
- San Mateo County, CA (6) · latest Jun 27, 2026
- Marin County, CA (6) · latest Dec 31, 2024
- Sonoma County, CA (6) · latest Feb 16, 2024
- Orange County, NC (5) · latest Jul 11, 1924
- King County, WA (5) · latest Jun 29, 2002
- Hawaii County, HI (4) · latest Dec 30, 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.