Home › Species › Caesar's Fibrecap

Caesar's Fibrecap

Inocybe caesariata · Family Inocybaceae · Updated October 2026

304US records

18states

Julbusiest month

304 US records since 1912 (67 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 Tennessee, and the busiest months are Jul, Aug 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 Inocybe includes fibercaps containing muscarine. 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: Jul, Aug, Oct.

Where it's recorded

State	Records	Latest sighting
New Jersey	194	Nov 3, 2019
Pennsylvania	26	2019
Tennessee	19	Sep 2, 2009
Michigan	13	Sep 17, 1961
West Virginia	11	Jun 23, 2011
North Carolina	8	Jul 25, 1934
Washington	7	Sep 12, 1948
New York	6	Jul 14, 1977
Indiana	5	Aug 2, 2006
Wisconsin	3	Sep 20, 2013
Wyoming	3	Aug 13, 1939
Iowa	2	Jun 22, 1936

Top counties

Sussex County, NJ (36) · latest Sep 28, 2019
Ocean County, NJ (29) · latest Oct 26, 2019
Morris County, NJ (25) · latest Jul 20, 2019
Mercer County, NJ (23) · latest May 4, 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

🍄

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 Amazon

As an Amazon Associate we earn from qualifying purchases.