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Cortinarius annulatus

Family Cortinariaceae · Updated October 2026

233US records

11states

Augbusiest month

233 US records since 1897 (68 in the last 10 years)

Last seen Nov 3, 2019 (about 7 years ago) near Belleplain, Cape May County, NJ, a field observation from Fungi of parks, forests and reserves of New Jersey (2007-2019). Most US records come from New Jersey, Pennsylvania and Wisconsin, and the busiest months are Aug, Oct and Jul. (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: Aug, Oct, Jul.

Where it's recorded

State	Records	Latest sighting
New Jersey	191	Nov 3, 2019
Pennsylvania	21	2019
Wisconsin	6	Aug 20, 1907
Michigan	6	Aug 10, 1968
New York	3	1915-08
North Carolina	1	Jul 15, 1991
Tennessee	1	–
Maine	1	Sep 12, 1905
Vermont	1	Aug 14, 1897
Maryland	1	Jul 9, 1919
Kansas	1	Sep 5, 2017

Top counties

Sussex County, NJ (36) · latest Sep 28, 2019
Ocean County, NJ (29) · latest Oct 26, 2019
Mercer County, NJ (23) · latest May 4, 2019
Morris County, NJ (22) · latest Jul 20, 2019
Burlington County, NJ (19) · latest Oct 6, 2018
Hunterdon County, NJ (15) · latest Aug 25, 2019
Monmouth County, NJ (13) · latest Aug 22, 2015
Middlesex County, NJ (12) · latest Aug 18, 2019
Bucks County, PA (11) · latest 2019
Warren County, NJ (11) · latest Jul 28, 2019

Bring along

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Regional mushroom field guideSee on Amazon

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Folding mushroom knife with brushSee on Amazon

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Wicker foraging basketSee on Amazon

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10x hand lens / loupeSee on Amazon

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Spore print paperSee on Amazon

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