Majestic Amanita
Amanita augusta · Family Amanitaceae · Updated October 2026
342US records
4states
Janbusiest month
342 US records since 2011 (336 in the last 10 years)
Last seen Sep 18, 2026 (about 5 weeks ago) near Inverness, Marin County, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Oregon and Washington, and the busiest months are Jan, Dec 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.
☠ Dangerous genus. The genus Amanita includes death cap and destroying angels. Mushrooms in this group have caused serious or fatal poisonings.
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, Dec, Oct.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 275 | Sep 18, 2026 |
| Oregon | 36 | Sep 17, 2026 |
| Washington | 23 | Oct 17, 2025 |
| Alaska | 8 | Sep 2, 2025 |
Top counties
- Marin County, CA (89) · latest Sep 18, 2026
- Humboldt County, CA (69) · latest Aug 1, 2026
- Sonoma County, CA (45) · latest Jan 14, 2026
- Lane County, OR (14) · latest Aug 28, 2025
- Mendocino County, CA (13) · latest Nov 30, 2025
- Santa Cruz County, CA (13) · latest Jan 10, 2026
- San Luis Obispo County, CA (13) · latest Dec 5, 2025
- Alameda County, CA (10) · latest Jan 6, 2026
- Monterey County, CA (10) · latest Dec 15, 2025
- San Mateo County, CA (8) · latest Dec 23, 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.