Hygrophorus cossus
CR

Hygrophorus cossus

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Hygrophorus_cossus

Overview

Hygrophorus cossus is a species of fungus in the genus Hygrophorus. It is known for having a white color with a brownish tinge on its fruiting body.

Hygrophorus cossus is critically endangered primarily due to habitat loss and degradation of its specialized old-growth forest ecosystems. The species requires very specific ecological conditions including mature trees and stable soil chemistry, making it extremely vulnerable to forest management practices and environmental changes.

Threat summary

Habitat

TERRESTRIAL· major

Other threatened species in Hygrophoraceae

Veiled Purple WaxcapVU

Veiled Purple Waxcap

Hygrophorus purpurascens

Unknown
CR

Cora putumayensis

Unknown
Amethyst WaxcapCR

Amethyst Waxcap

Chromosera viola

Unknown
Arctic Mushroom Scales LichenCR

Arctic Mushroom Scales Lichen

Lichenomphalia hudsoniana

Unknown

Frequently asked questions

Why is Hygrophorus cossus classified as Critically Endangered?
Hygrophorus cossus 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. Hygrophorus cossus is critically endangered primarily due to habitat loss and degradation of its specialized old-growth forest ecosystems. The species requires very specific ecological conditions including mature trees and stable soil chemistry, making it extremely vulnerable to forest management practices and environmental changes.
Where does Hygrophorus cossus live?
Hygrophorus cossus 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 Hygrophorus cossus?
The main threats to Hygrophorus cossus 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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