Assessment Notes

Justification

Laccaria bicolor is commonly reported from throughout North America into Central America and most of Europe into Asia (Mueller 1992). It is commonly found in planted pine plantations outside of its native range. It is an ectomycorrhizal species, commonly found associated with conifers, especially species of pines. It is assessed as Least Concern.

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Taxonomic notes

Laccaria bicolor is probably a species complex. Phylogenetic analyses based on multigene sequences place field identified species in separate clades, but a revised taxonomy is not yet available (G.M. Mueller pers. com.).

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Geographic range

Laccaria bicolor is commonly reported from throughout North America into Central America and most of Europe into Asia (Mueller 1992). It is commonly found in planted pine plantations outside of its native range.

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Population and Trends

This species is commonly found throughout the north temperate zone into northern Central America

Population Trend: Stable

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Habitat and Ecology

This is an ectomycorrhizal species, commonly found associated with conifers, especially species of pines.

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Threats

No major threats are known.

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Conservation Actions

A rigorous revision is needed to identify cryptic species withing this broadly distributed taxon.

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Use and Trade

It is collected for human consumption in parts of its range, including in Mexico.

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Source and Citation

Mueller, G.M. 2025. Laccaria bicolor. The IUCN Red List of Threatened Species 2025: e.T273196612A273245957. Accessed on 22 November 2025.

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• Country occurrence