Bulbous Fibrecap
Inocybe napipes · Family Inocybaceae · Updated October 2026
72US records
13states
Augbusiest month
72 US records since 1953 (19 in the last 10 years)
Last seen Aug 8, 2026 (about 3 months ago) near Davis, Tucker County, WV, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Washington, Michigan and West Virginia, and the busiest months are Aug, Oct and Nov. (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: Aug, Oct, Nov.
Where it's recorded
Top counties
- King County, WA (8) · latest May 14, 2009
- Snohomish County, WA (7) · latest Sep 26, 1976
- Thurston County, WA (6) · latest Nov 13, 1971
- Luce County, MI (6) · latest Jul 17, 1957
- Tucker County, WV (5) · latest Aug 8, 2026
- Kitsap County, WA (4) · latest Apr 30, 2000
- San Juan County, WA (4) · latest Nov 23, 1972
- Yancey County, NC (3) · latest Sep 24, 2021
- Lyon County, MN (2) · latest Jun 15, 2007
- Somerset County, NJ (2) · latest Jun 10, 1996
More on this species from GBIF.
Bring along
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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.