Thick-Veiled Cortinarius
Cortinarius magnivelatus · Family Cortinariaceae · Updated October 2026
33US records
2states
Junbusiest month
33 US records since 1963 (5 in the last 10 years)
Last seen May 24, 2020 (about 6 years ago) in Shasta National Forest, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California and Oregon, and the busiest months are Jun, May 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 Cortinarius includes webcaps containing orellanine. 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: Jun, May, Oct.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 32 | May 24, 2020 |
| Oregon | 1 | May 12, 2018 |
Top counties
- Siskiyou County, CA (7) · latest May 24, 2020
- Sierra County, CA (7) · latest Jun 3, 1997
- Tuolumne County, CA (6) · latest Oct 22, 1967
- Fresno County, CA (5) · latest Aug 4, 2016
- Mariposa County, CA (1) · latest May 6, 1976
- Shasta County, CA (1) · latest Jul 1, 1980
- Mono County, CA (1) · latest Jun 26, 1966
- Tehama County, CA (1) · latest Jun 6, 1988
- El Dorado County, CA (1) · latest Jul 6, 1966
- Plumas County, CA (1) · latest May 28, 2017
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.