VU

Crustomyces expallens

Unknown

Overview

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

Crustomyces expallens faces significant pressure from habitat degradation in its specialized forest environments, where logging and land conversion reduce the availability of suitable substrates for growth. The species' dependence on specific microhabitat conditions makes it particularly vulnerable to environmental changes that alter moisture levels and organic matter composition. Climate change poses an additional threat by potentially shifting the temperature and humidity regimes that this fungus requires for successful reproduction and survival.

Threat summary

Habitat

Crustomyces expallens inhabits temperate and boreal forest ecosystems, typically growing on decaying wood substrates including fallen logs, dead branches, and other woody debris. The species requires specific moisture conditions and is often found in shaded forest understories where humidity levels remain relatively stable throughout the year.

TERRESTRIAL· major

Frequently asked questions

Why is Crustomyces expallens classified as Vulnerable?
Crustomyces expallens is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Crustomyces expallens faces significant pressure from habitat degradation in its specialized forest environments, where logging and land conversion reduce the availability of suitable substrates for growth. The species' dependence on specific microhabitat conditions makes it particularly vulnerable to environmental changes that alter moisture levels and organic matter composition. Climate change poses an additional threat by potentially shifting the temperature and humidity regimes that this fungus requires for successful reproduction and survival.
Where does Crustomyces expallens live?
Crustomyces expallens 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 Crustomyces expallens?
The main threats to Crustomyces expallens 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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