Blackedged Shield
Pluteus atromarginatus · Family Pluteaceae · Updated October 2026
64US records
18states
Octbusiest month
64 US records since 1909 (27 in the last 10 years)
Last seen Oct 17, 2025 (about 12 months ago) near Port Angeles, Clallam County, WA, a preserved specimen in INSDC Sequences. Most US records come from California, Washington and Michigan, and the busiest months are Oct, Sep and Nov. (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, Sep, Nov.
Where it's recorded
Top counties
- San Francisco County, CA (10) · latest Jan 24, 2024
- Mariposa County, CA (4) · latest Oct 4, 2014
- Clallam County, WA (4) · latest Oct 17, 2025
- King County, WA (3) · latest Oct 3, 1982
- Humboldt County, CA (3) · latest Oct 2, 2022
- Chippewa County, MI (2) · latest Sep 1, 1916
- Hardin County, TX (2) · latest Jan 3, 1982
- Cheboygan County, MI (2) · latest Jul 22, 1953
- Santa Cruz County, CA (2) · latest May 17, 2024
- Carlton County, MN (1) · latest Sep 29, 2013
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.