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Desert Inkcap

Montagnea arenaria · Family Agaricaceae · Updated October 2026

384US records

10states

Maybusiest month

384 US records since 1895 (235 in the last 10 years)

Last seen Aug 9, 2026 (about 3 months ago) near Escalante, Garfield County, UT, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, New Mexico and Texas, and the busiest months are May, Apr and Jun. (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.

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: May, Apr, Jun.

Where it's recorded

State	Records	Latest sighting
California	224	Apr 4, 2026
New Mexico	49	Jul 3, 2026
Texas	41	Jul 15, 2026
Arizona	22	Oct 6, 2025
Utah	13	Aug 9, 2026
Idaho	8	Jun 18, 2022
Nevada	7	Oct 5, 2023
Colorado	7	Jun 19, 2022
Washington	7	Apr 2, 2024
Oregon	6	May 21, 2026

Top counties

San Bernardino County, CA (42) · latest Mar 28, 2026
Riverside County, CA (34) · latest Mar 7, 2026
Los Angeles County, CA (33) · latest May 6, 2025
San Diego County, CA (30) · latest Mar 10, 2026
Kern County, CA (25) · latest Apr 4, 2026
Bernalillo County, NM (21) · latest Sep 29, 1946
Stonewall County, TX (17) · latest 1983-06
San Luis Obispo County, CA (13) · latest Jun 9, 2023
Imperial County, CA (12) · latest Mar 11, 2026
Ventura County, CA (12) · latest Oct 1, 2025

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

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