- Scientific name
- Craterellus calicornucopioides
- D. Arora & J.L. Frank
- Common names
- IUCN Specialist Group
- Mushroom, Bracket and Puffball
- Assessment status
- Assessment date
- IUCN Red List Category
- Siegel, N.
- Dahlberg, A.
is widespread and common. Local declines are expected, mostly from habitat loss due to Sudden Oak Death killing the preferred host tree, Tanaok, but the overall population is thought to be broadly stable. Due to the the total extent of occurrence and limited local declines, it is assessed as Least Concern.
was long referred to by the name of the European species, C. cornucopioides
(Thiers 1985, Arora 1986). The distinct western North American entity was described from a type collection made in Mendocino County, California, USA (Frank 2015).
is known from central California, USA, north into Washington state. This species is most common in Tanoak (Notholithocarpus densiflorus
) dominated forests in northern California and south-west Oregon, but occasional in live oak woodlands to the south and found mostly with Oregon White Oak (Quercus garryana
) to the north.
Population and Trends
The population of this species is widespread, occurring over a large expanse of the western USA. Locally, it is a very abundant species. Most of the population is currently stable, but decline of Tanoak due to the introduced pathogen Sudden Oak Death (Phytophthora ramorum) is a localized threat.
Population Trend: stable
Habitat and Ecology
is ectomycorrhizal with hardwoods, especially Tanoak (Notholithocarpus densiflorus
), Coast Live Oak (Quercus agrifolia
) and Oregon White Oak (Q. garryana
). It has also been reported with Vaccinium
and/or Douglas fir (Pseudotsuga menziesii
) in the northern portion of its range (Frank 2015). It is very common in the mixed evergreen forests of northern California, occasional elsewhere, fruiting from early winter into spring.
Overall, this species' population appears stable, with local subpopulations under threat due to the introduced pathogen Sudden Oak Death (Phytophthora ramorum
) killing large swaths of Tanoak.
There is a need to limit the spread of Sudden Oak Death in northern California forests. No specific research is needed with regards to this species.
Use and Trade
is a highly desired edible species, and is collected by hobbyist foragers and commercial pickers. However, no decline has been recorded due to current harvest practices.
Source and Citation
Siegel, N. 2021. Craterellus calicornucopioides. The IUCN Red List of Threatened Species 2021: e.T189958461A198625182. https://dx.doi.org/10.2305/IUCN.UK.2021-2.RLTS.T189958461A198625182.en
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