Ornamented Mushroom
Agaricus comtulus · Family Agaricaceae · Updated October 2026
31US records
13states
Octbusiest month
31 US records since 1899 (5 in the last 10 years)
Last seen Oct 18, 2025 (about 12 months ago) near Port Angeles, Clallam County, WA, a preserved specimen in INSDC Sequences. Most US records come from Washington, California and Florida, and the busiest months are Oct, Aug and Dec. (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, Aug, Dec.
Where it's recorded
Top counties
- Alachua County, FL (4) · latest Aug 11, 1981
- King County, WA (4) · latest 1963-10
- Tompkins County, NY (3) · latest Oct 20, 1959
- Alameda County, CA (2) · latest Dec 11, 1993
- Marin County, CA (2) · latest Aug 23, 1980
- Thurston County, WA (2) · latest Oct 10, 2020
- San Francisco County, CA (1) · latest Oct 29, 1978
- Hawaii County, HI (1) · latest Dec 28, 1995
- Clallam County, WA (1) · latest Oct 18, 2025
- Bristol County, MA (1) · latest Oct 9, 1905
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.