Assessment Notes

Justification

Gomphogaster leucosarx is a secotioid fungus known from a single collection made in 1958 in North America. The lack of additional records suggest this may be a rare species, but targeted search efforts are needed to confirm this. The placement of G. leucosarx in Gomphogaster has also been questioned and should be further reviewed. It is assessed as Data Deficient (DD).

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Taxonomic notes

Originally described as Brauniellula leucosarx, this species was later transferred to the monotypic genus Gomphogaster based on its morphogical characteristics. The Gomphidiaceae family has since been reviewed using phylogenetic analysis (Miller Jr. 2003), but it was not possible to study G. leucosarx at the time because its holotype collection consists of a single fruiting body. Nevertheless, authors noted that G. leucosarx will likely be transferred do Gomphidius in the future.

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Geographic range

This species is known from a single site in Payette National Forest in Idaho, USA (Smith and Singer 1958).

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Population and Trends

This species is known from a single specimen found in 1958. Given the lack of more recent records or search attempts it is not possible to estimate the population size.

Population Trend: Unknown

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Habitat and Ecology

The species is likely mycorrhizal with Pinaceae (Miller Jr. 2003). It was found under Pinus contorta, growing solitarily (Smith and Singer 1958).

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Threats

Threats to this species are unknown.

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Conservation Actions

A review of its taxonomic placement is needed, as well as targeted search efforts to estimate the population size and determine its habitat preferences and distribution.

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Source and Citation

Cunha, S.P. & Gonçalves, S.C. 2025. Gomphogaster leucosarx. The IUCN Red List of Threatened Species 2025: e.T266014799A266018048. Accessed on 22 November 2025.

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• Country occurrence