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How to Identify Shoehorn Oyster

Hohenbuehelia petaloides
EDIBLE* Season // May-Oct Family // Unknown

Description

Small to medium fan or petal-shaped caps 1-4 inches wide, pale gray-brown to tan, often with a gelatinous or slimy cuticle when fresh. Decurrent white to grayish gills and very short lateral stem or no stem. Distinguished by slimy cap surface and nematode-trapping ability. Grows in small overlapping clusters on hardwood.

Specimen Profile

FamilyUnknown
GenusHohenbuehelia
EdibilityEdible*
Toxicityunknown
SeasonMay-Oct
HabitatSaprobic on dead hardwood logs, branches, and stumps, particularly oak, maple, beech, and other deciduous trees. Prefers well-rotted wood. Forms small overlapping clusters. Interesting biology: captures and digests nematodes (roundworms) from wood for supplemental nutrition.
RegionEastern North America, Southeastern United States, Great Lakes region, Pacific Northwest, Widespread in temperate regions

Habitat & Distribution

Habitat: Saprobic on dead hardwood logs, branches, and stumps, particularly oak, maple, beech, and other deciduous trees. Prefers well-rotted wood. Forms small overlapping clusters. Interesting biology: captures and digests nematodes (roundworms) from wood for supplemental nutrition.

Region: Eastern North America, Southeastern United States, Great Lakes region, Pacific Northwest, Widespread in temperate regions

Seasonality

Spring through fall, with peak fruiting in May-October. Most common in late spring and summer. Fruits during warm, humid weather after rain.

Typical months: May-Oct

Common Lookalikes

Always verify identification to avoid these similar species. The differentiator is the point — learn the one or two tells that separate them:

Pleurotus ostreatus (larger, no slimy cap, different season)

Panellus species (similar size but usually on conifers)

Resupinatus species (much smaller, different texture)

Crepidotus species (brown spores, no slimy cap)

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Disclaimer: This guide is for educational purposes only. Never consume a wild mushroom unless you are 100% certain of its identification.