Marshmallow Polypore
Irpiciporus pachyodon
Conservation status data sourced from the IUCN Red List of Threatened Species.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Irpiciporus_pachyodon
Taxonomy & Classification
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Polyporales
Family
Meruliaceae
Genus
Irpiciporus
Marshmallow Polypore belongs to the family Meruliaceae, order Polyporales, within the Agaricomycetes class.
Species Profile
Species profile data sourced from the IUCN Red List of Threatened Species.
The Marshmallow Polypore faces severe threats from widespread deforestation and habitat fragmentation across its range, particularly affecting the old-growth forests it depends upon for suitable host trees. Climate change is altering forest composition and moisture regimes critical for this fungal species, while increased human development continues to reduce available habitat.
Key Facts
Habitat & Distribution
This polypore fungus inhabits mature temperate and boreal forests, growing as a saprophyte on decaying hardwood trees, particularly favoring old-growth forest environments with stable moisture conditions and abundant dead wood substrate.
Threats
IUCN Red List: Critically Endangered
The Marshmallow Polypore faces severe threats from widespread deforestation and habitat fragmentation across its range, particularly affecting the old-growth forests it depends upon for suitable host trees. Climate change is altering forest composition and moisture regimes critical for this fungal species, while increased human development continues to reduce available habitat.
Climate change affecting forest moisture and temperature regimes
Deforestation and logging of old-growth forests
Habitat fragmentation from human development
Forest degradation from invasive species
Loss of suitable host tree species
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Marshmallow Polypore (Irpiciporus pachyodon). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/marshmallow-polypore