Big Sheath Mushroom
Volvopluteus gloiocephalus · Family Pluteaceae · Updated October 2026
709US records
29states
Janbusiest month
709 US records since 1893 (581 in the last 10 years)
Last seen Mar 25, 2026 (about 7 months ago) near Huntington Beach, Orange County, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Washington and Florida, and the busiest months are Jan, Feb 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: Jan, Feb, Dec.
Where it's recorded
Top counties
- Santa Clara County, CA (92) · latest Feb 11, 2026
- Alameda County, CA (49) · latest Jan 14, 2026
- Los Angeles County, CA (48) · latest Jan 7, 2026
- San Mateo County, CA (40) · latest Jan 9, 2026
- San Francisco County, CA (40) · latest Jan 17, 2024
- Contra Costa County, CA (32) · latest Jan 4, 2026
- Marin County, CA (31) · latest Dec 29, 2025
- San Diego County, CA (28) · latest Dec 26, 2025
- Sonoma County, CA (25) · latest Jan 21, 2026
- Sacramento County, CA (24) · latest Dec 26, 2025
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.