• Proposed
  • Under Assessment
  • LCPreliminary Assessed
  • 4Assessed
  • 5Published

Craterellus caeruleofuscus A.H. Sm.

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Scientific name
Craterellus caeruleofuscus
A.H. Sm.
Common names
Cerulean Black Trumpet
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Preliminary Assessed
Preliminary Category
Proposed by
James Westrip
James Westrip

Assessment Notes


This is a widespread species, which is unlikely to meet or approach the thresholds for consideration as threatened. Therefore, Craterellus caeruleofuscus is assessed as Least Concern.

Taxonomic notes

Why suggested for a Global Red List Assessment?

Chanterelle project

Geographic range

This is a species of eastern North America, across to the Great Lakes region (Bigelow 1978, Thormann and Rice 2007, Hopping 2023, GBIF 2023). Records from Europe are tentatively assumed to represent misidentifications of other black Craterellus, or potentially a separate taxon.

Population and Trends

The species has been described as ‘probably rare’ in the south of its range (Hopping 2023), but has also been referred to fruiting in a variety of fashions from scattered to gregarious and caespitose towards the north of its range (Bigelow 1978). With such a wide range it is assumed that the population size will be very large. The population trend is unknown, but it is unlikely to be declining at a rate that would warrant consideration under criterion A.

Population Trend: Uncertain

Habitat and Ecology

This is a species that generally occurs with mosses, particularly Sphagnum, usually under coniferous trees like pine and hemlock (Smith 1968, Bigelow 1978, Bessette et al. 1997, Thormann and Rice 2007). It has been noted once in maple-birch woodland, on the ground (Bigelow 1978). It can be found fruiting between July and October (Smith 1968, Bigelow 1978, Bessette et al. 1997).

Boreal ForestTemperate Forest


With such a wide range it is not thought to face any threats that would be considered significant, although it may face some localised threats.

Conservation Actions

This species occurs in protected areas, having been described from Tahquamenon Falls State Park (Smith 1968).

Research needed

Genetic confirmation of whether this species occurs in Europe or not would be useful.

TaxonomyPopulation size, distribution & trends

Use and Trade

There is conflicting information as to whether it is edible or not; with its edibility listed as unknown (Bessette et al. 1997), ‘tastes bad’ (Hopping 2023) and as a ‘choice edible mushroom’ (Mushroom Appreciation LLC 2023).


Country occurrence

Regional Population and Trends

Country Trend Redlisted