Bulbous Bonnet
Mycena stylobates · Family Mycenaceae · Updated October 2026
41US records
14states
Augbusiest month
41 US records since 1895 (13 in the last 10 years)
Last seen Oct 2, 2025 (about 13 months ago) in Henry Cowell Redwoods State Park, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Washington, Michigan and California, and the busiest months are Aug, Oct 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: Aug, Oct, Jul.
Where it's recorded
Top counties
- Pierce County, WA (5) · latest Jun 5, 1988
- Washtenaw County, MI (3) · latest Oct 30, 1961
- King County, WA (3) · latest Oct 14, 1944
- Alachua County, FL (2) · latest Jul 23, 1943
- Cheboygan County, MI (2) · latest Jul 3, 1947
- Lane County, OR (2) · latest Oct 1, 2022
- Marin County, CA (2) · latest Aug 15, 2021
- Montgomery County, VA (2) · latest Jul 9, 2013
- Snohomish County, WA (2) · latest Sep 13, 1956
- Humboldt County, CA (2) · latest Nov 14, 2021
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.