- Scientific name
- Amanita calyptroderma
- G.F. Atk. & V.G. Ballen
- Common names
- IUCN Specialist Group
- Mushroom, Bracket and Puffball
- Assessment status
- Assessment date
- IUCN Red List Category
- Siegel, N.
- Dahlberg, A.
is a very common species in the mixed evergreen forests of northern California, and more occasionally into Washington, USA. The population appears stable as no decline has been recorded. It is assessed as Least Concern.
was described from California, USA. The names Amanita calyptrata
and A. lanei
have also been applied to this species, but due to nomenclature and taxonomic issues, A. calyptroderma
is the consensus accepted name (see Desjardin et al
. 2015). The paler, spring fruiting 'form' (Thiers 1983, Arora 1986) was described as a distinct species, Amanita vernicoccora
(Bojantchev et al
This species is very common from central California into southern Oregon in coastal and Coast Range forests. It is occasional south to Santa Barbara County, California, the Sierra Nevada foothills, and north into Washington, USA.
Population and Trends
The population is widespread, and it is an abundant species across much of the range. No decline has been recorded.
Population Trend: stable
Habitat and Ecology
This species is ectomycorrhizal with both hardwoods and conifers, especially Tanoak (Notholithocarpus densiflorus
), Madrone (Arbutus menziesii
), and Coast Live Oak (Quercus agrifolia
), among others. It has also been noted with Douglas Fir (Pseudotsuga menziesii
) in the northern portion of the range. It is very common in the mixed evergreen forests of northern California, occasional elsewhere, fruiting in fall into early winter.
No specific threats have been identified with regards to this species.
No specific conservation actions have been identified with regards to this species, and no specific research is needed either with regards to this species.
Use and Trade
is edible, and occasionally collected by mushroom foragers.
Source and Citation
Siegel, N. 2021. Amanita calyptroderma. The IUCN Red List of Threatened Species 2021: e.T198477424A198486986. https://dx.doi.org/10.2305/IUCN.UK.2021-2.RLTS.T198477424A198486986.en
.Accessed on 2 October 2022