Assessment Notes

Justification

Craterellus cinereofimbriatus is known from northern South America. This species has not been reported from any protected areas, and its habitat is potentially threatened by logging, wood harvesting, and mining, however further research is needed in order to confirm this. However, given its relatively wide distribution and lack of evidence of steep declines, it is currently assessed as Least Concern.

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Geographic range

The ectomycorrhizal species Craterellus cinereofimbriatus has collected from northern South America; in Guyana in association with host trees in the genera Dicymbe (Fabaceae subfam. Caesalpinioideae) and Pakaraimaea (Cistaceae) (Wilson et al. 2012, Smith et al. 2013). A re-evaluation of a specimen identified as Craterellus orinocensis in southwestern Venezuela was shown to be this species too (Henkel et al. 2014). In Colombia the species occurs associated with Dicymbe uaiparuensis in white sand forests, and Pseudomonotes tropenbosii (Dipterocarpaceae) in terra-firme forests (Vasco-Palacios et al. 2018, 2022). This gives the species a wide distribution in northern South America, and it is at least assumed that it will occur in northern Brazil too. However, based on the potential plant associates, it could be even more widespread than that.

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Population and Trends

The habitat of this species is potentially threatened by logging and wood harvesting, and this species has not been reported from any protected areas. It is reasonable to assume that this species’ population may be decreasing, however further information regarding the present wild distribution of this species is needed in order to confirm this.

Population Trend: Decreasing

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Habitat and Ecology

Craterellus cinereofimbriatus grows solitarily or scattered as small caespitose clusters on humic mat in the Amazonian biome. This ectomycorrhizal species has been reported associated with several hosts such as Dicymbe corymbosa, D. altsonii, D. jenmanii, D. uaiparuensis, Aldina insignis, Pakaraimaea dipterocarpacea and Pseudomonotes tropenbosii.

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Threats

This species is likely to be threatened by logging, wood harvesting and illegal mining at at least some of its known localities. Populations of Dicymbe species associated with Craterellus cinereofimbriatus are severely fragmented in some regions, however some known Dicymbe host species for C. cinereofimbriatus have been assessed as Least Concern (Beech 2024a,b). Also, the population of Pseudomonotes tropenbosii is thought to be stable as the forests in these areas are still in relatively good condition and the species has been assessed as Least Concern (Lopez-Gallego and Morales 2020). However, the known locations of C. cinereofimbriatus are located close to indigenous villages, and indigenous peoples use the terra-firme forests to establish chagras or farming areas, where they could destroy entire patches of habitat. Also, this region is being negatively impacted by illegal mining (Forest 500 initiative 2024). These actions may become future threats to the species.

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Conservation Actions

No conservation actions are currently in place for Craterellus cinereofimbriatus. Protection of this species' habitat is required for its successful conservation. Further research into this species' current wild distribution, habitat preferences, and potential threats is also required to build an accurate assessment of this species.

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Use and Trade

No uses have been reported for this species.

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Source and Citation

Vasco Palacios, A.M. 2025. Craterellus cinereofimbriatus. The IUCN Red List of Threatened Species 2025: e.T189958529A265919087. Accessed on 23 November 2025.

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• Country occurrence