Assessment Notes

Justification

This species appears to only be known from a single collection in Germany, and there is some taxonomic doubt, such that it could be a synonym of Gomphus clavatus. Given the uncertainties around this concept, it is assessed as Data Deficient.

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Taxonomic notes

Giachini and Castellano (2011) apear to treat this as a synonym of Gomphus clavatus. However, no reference is made to Craterellus nucleatus in the list of countries or specimens looked at in Giachini et al. (2012); while Saccardo and Trotter (1912) specifically highlighted the contrasts with C. clavatus (as it was considered then). Therefore, they are treated as separate species here.

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Geographic range

This species was collected in Germany (Saccardo and Trotter 1912), although exact collecting locality is not provided in Saccardo and Trotter (1912).

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Population and Trends

There is no quantitative information regarding population size and trend.

Population Trend: Unknown

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Habitat and Ecology

It was collected from the ground in a dry forest (Saccardo and Trotter 1912).

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Threats

Further work regarding the full distribution of the species required before an accurate assessment of the threats it faces can be made.

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Conservation Actions

Studies specifically focussing on the taxonomic placement of this concept are required. If it is accepted as a species following this work, then field surveys are needed in order to locate additional specimens and to get a clearer idea of the full distribution of this species.

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Source and Citation

Westrip, J.R.S. 2025. Craterellus nucleatus. The IUCN Red List of Threatened Species 2025: e.T269705403A269705405. Accessed on 23 November 2025.

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• Country occurrence