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Bitter Waxcap

Bitter Waxcap (Hygrocybe mucronella), photo
Photo: Davide Puddu, CC BY 4.0 · iNaturalist
Hygrocybe mucronella · Family Hygrophoraceae · Updated October 2026
240US records
11states
Octbusiest month
240 US records since 1941 (74 in the last 10 years)

Last seen Aug 30, 2023 (about 3 years ago) in Great Smoky Mountains National Park, NC, a preserved specimen in University of Tennessee Fungal Herbarium. Most US records come from New Jersey, Pennsylvania and California, and the busiest months are Oct, Aug 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.
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

Jan1Feb0Mar0Apr1May15Jun18Jul41Aug49Sep35Oct57Nov10Dec1

Records by month, all years. Busiest: Oct, Aug, Jul.

Where it's recorded

StateRecordsLatest sighting
New Jersey191Nov 3, 2019
Pennsylvania192019
California7May 7, 2023
Tennessee7May 13, 2022
Washington4Oct 24, 2020
North Carolina4Aug 30, 2023
Minnesota2Sep 11, 1994
Michigan2Sep 16, 1950
Arkansas2Oct 25, 2013
Florida1–
Montana1Jun 2, 1971

Top counties

More on this species from GBIF.

Bring along

🍄
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
🍄
Spore print paperSee on Amazon

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