White Webcap
CR

White Webcap

Leucocortinarius bulbiger

Unknown

Photo: Photo: Wikimedia Commons, CC BY-SA

Overview

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

The White Webcap faces severe threats from habitat destruction and degradation of old-growth forests across its limited range. Climate change and increasing forest fragmentation are further reducing suitable habitat for this specialized mycorrhizal fungus, which depends on specific host tree relationships and stable forest ecosystems.

Threat summary

Habitat

Mature coniferous and mixed forests, particularly those with established mycorrhizal networks in temperate regions. The species requires stable forest floor conditions with appropriate soil chemistry and long-term associations with specific host trees.

TERRESTRIAL· major

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Frequently asked questions

Why is White Webcap classified as Critically Endangered?
White Webcap is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. The White Webcap faces severe threats from habitat destruction and degradation of old-growth forests across its limited range. Climate change and increasing forest fragmentation are further reducing suitable habitat for this specialized mycorrhizal fungus, which depends on specific host tree relationships and stable forest ecosystems.
Where does White Webcap live?
White Webcap 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 White Webcap?
The main threats to White Webcap 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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