Assessment Notes

Justification

Gomphidius roseus is an uncommon but widespread edible ectomycorrhizal fungus in Europe, associated with the very common Jersey Cow Mushroom and pines. There is no evidence of decline. It can be locally abundant where suitable habitat exists. Therefore, it is assessed as Least Concern (LC).

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Geographic range

Gomphidius roseus is uncommon but widespread in Europe throughout areas where the Jersey Cow Mushroom, with which it is associated, occurs. The area of occupancy (AOO) of this species is much larger than 2,000 km², and its extent of occurrence (EOO) is much larger than 20,000 km².

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Population and Trends

The population size is likely to be very large since this is such a widespread species, and more or less stable, as there is no indication of any decline.

Population Trend: stable

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Habitat and Ecology

Gomphidius roseus grows in Scots Pine (Pinus sylvestris) forests on acidic soil. It is classified as an ectomycorrhizal fungus forming mycorrhiza with pine (Pinus) but it is also obligatorily associated with Jersey Cow Mushroom (Suillus bovinus). These three organisms form a three-way mycorrhizal relationship where G. roseus is thought to be parasitic upon the mycelia of S. bovinus.

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Threats

There are no major threats to this species.

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Conservation Actions

No conservation measures are needed for this species since it is widespread and there are no major threats to it.

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Use and Trade

Gomphidius roseus is an edible mushroom but not much collected.

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Source and Citation

Dahlberg, A. 2019. Gomphidius roseus. The IUCN Red List of Threatened Species 2019: e.T122090530A222970232. .Accessed on 1 February 2023

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• Country occurrence