Hymenochaete ulmicola
VUVulnerable

Hymenochaete ulmicola

Local name: almrostöra

Hymenochaete ulmicola is a bracket fungus that forms thin, leathery, rust-brown fruiting bodies on dead and dying hardwood trees, particularly elm species. This saprotrophic fungus plays a crucial ecological role as a wood decomposer, breaking down cellulose and lignin in fallen logs and standing deadwood, contributing essential nutrients back to forest ecosystems.

Photo: iNaturalist: (c) svenpruul, some rights reserved (CC BY-NC)

01Classification

Taxonomy & Classification

Kingdom

Fungi

Phylum

Basidiomycota

Class

Agaricomycetes

Order

Hymenochaetales

Family

Hymenochaetaceae

Genus

Hymenochaete

Hymenochaete ulmicola belongs to the family Hymenochaetaceae, order Hymenochaetales, within the Agaricomycetes class.

02Description

Species Profile

Hymenochaete ulmicola is a bracket fungus that forms thin, leathery, rust-brown fruiting bodies on dead and dying hardwood trees, particularly elm species. This saprotrophic fungus plays a crucial ecological role as a wood decomposer, breaking down cellulose and lignin in fallen logs and standing deadwood, contributing essential nutrients back to forest ecosystems.

Hymenochaete ulmicola faces significant threats from habitat loss due to deforestation and urban development, which reduces the availability of suitable host trees. The species is particularly vulnerable to changes in forest composition and the removal of dead or dying hardwood trees that serve as essential substrates for this wood-decay fungus.

Key Facts

IUCN StatusVulnerable (VU)
GroupFungi
03Habitat

Habitat & Distribution

This wood-decay fungus primarily inhabits deciduous and mixed forests, growing on dead or dying hardwood trees, particularly elm, oak, and other broadleaf species. It is typically found in mature forest ecosystems where dead wood substrates are abundant and environmental conditions remain relatively stable.

TERRESTRIALMajor
04Threats

Threats

Habitat loss and deforestation

HighOngoing

Urban development and land conversion

HighOngoing

Air pollution and environmental degradation

MediumOngoing

Climate change affecting host tree distribution

MediumOngoing

Removal of dead wood and forest management practices

MediumOngoing
Community

Community Sightings

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07Sources

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). Hymenochaete ulmicola (Hymenochaete ulmicola). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/almrostora

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