EN

Xenasma pruinosum

Local name: vårtsporigt stålskinn

Unknown

Overview

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

Xenasma pruinosum faces severe decline due to the loss of old-growth coniferous forests across Scandinavia and northern Europe. This corticioid fungus requires specific microhabitat conditions found only on the bark of ancient spruce and fir trees, making it extremely vulnerable to intensive forestry practices. Climate change compounds these pressures by altering the moisture regimes and temperature conditions essential for its survival and reproduction.

Threat summary

Habitat

This species inhabits old-growth coniferous forests, particularly those dominated by Norway spruce and silver fir. It grows as a thin, crusty layer on the bark of mature and over-mature trees, requiring the specific humidity and temperature conditions found in undisturbed forest ecosystems.

TERRESTRIAL· major

Other threatened species in Xenasmataceae

VU

Xenasma pulverulentum

Unknown
VU

Xenasma rimicola

Unknown

Frequently asked questions

Why is vårtsporigt stålskinn classified as Endangered?
vårtsporigt stålskinn 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. Xenasma pruinosum faces severe decline due to the loss of old-growth coniferous forests across Scandinavia and northern Europe. This corticioid fungus requires specific microhabitat conditions found only on the bark of ancient spruce and fir trees, making it extremely vulnerable to intensive forestry practices. Climate change compounds these pressures by altering the moisture regimes and temperature conditions essential for its survival and reproduction.
Where does vårtsporigt stålskinn live?
vårtsporigt stålskinn 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 vårtsporigt stålskinn?
The main threats to vårtsporigt stålskinn 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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