Surprise Webcap
Cortinarius semisanguineus · Family Cortinariaceae · Updated October 2026
577US records
35states
Octbusiest month
577 US records since 1887 (130 in the last 10 years)
Last seen Sep 7, 2026 (about 7 weeks ago) in Shenandoah National Park, VA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New Jersey, North Carolina and Washington, and the busiest months are Oct, Aug and Sep. (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: Oct, Aug, Sep.
Where it's recorded
Top counties
- Sussex County, NJ (37) · latest Sep 28, 2019
- Ocean County, NJ (34) · latest Nov 6, 2020
- Burlington County, NJ (24) · latest Nov 25, 2023
- Mercer County, NJ (23) · latest May 4, 2019
- Morris County, NJ (22) · latest Jul 20, 2019
- Hunterdon County, NJ (15) · latest Aug 25, 2019
- Watauga County, NC (15) · latest Aug 19, 1901
- Blount County, TN (14) · latest Aug 4, 2008
- Monmouth County, NJ (13) · latest Aug 22, 2015
- Middlesex County, NJ (12) · latest Aug 18, 2019
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.