Shoehorn Oyster
EN

Shoehorn Oyster

Hohenbuehelia petaloides

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Hohenbuehelia_petaloides

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Shoehorn Oyster faces severe decline due to widespread deforestation and habitat fragmentation across its native range in temperate deciduous forests. Old-growth forest destruction has eliminated many of the mature hardwood trees this saprophytic fungus depends on for substrate. Climate change compounds these pressures by altering moisture regimes and temperature patterns essential for fruiting body development and spore dispersal.

Threat summary

Habitat

This saprophytic fungus grows exclusively on decaying hardwood trees, particularly oak, beech, and maple species in mature temperate deciduous forests. It requires specific moisture conditions and substrate chemistry found in old-growth forest environments with minimal human disturbance.

TERRESTRIAL· major

Other threatened species in Pleurotaceae

Veiled OysterVU

Veiled Oyster

Pleurotus dryinus

Unknown
VU

Hohenbuehelia valesiaca

Unknown
EN

Spatula Oyster

Hohenbuehelia auriscalpium

Unknown
EN

Moor-Muscheling

Hohenbuehelia longipes

Unknown

Frequently asked questions

Why is Shoehorn Oyster classified as Endangered?
Shoehorn Oyster is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. The Shoehorn Oyster faces severe decline due to widespread deforestation and habitat fragmentation across its native range in temperate deciduous forests. Old-growth forest destruction has eliminated many of the mature hardwood trees this saprophytic fungus depends on for substrate. Climate change compounds these pressures by altering moisture regimes and temperature patterns essential for fruiting body development and spore dispersal.
Where does Shoehorn Oyster live?
Shoehorn Oyster occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Shoehorn Oyster?
The main threats to Shoehorn Oyster are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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