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  • Under Assessment
  • 3Preliminary Assessed
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Suillellus amygdalinus (Thiers) Vizzini, Simonini & Gelardi

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Scientific name
Suillellus amygdalinus
Author
(Thiers) Vizzini, Simonini & Gelardi
Common names
 
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Boletales
Family
Boletaceae
Assessment status
Under Assessment
Proposed by
Noah Siegel
Assessors
Noah Siegel
Comments etc.
James Westrip

Assessment Notes

Justification

Suillellus amygdalinus is a common bolete in oak woodlands across western North America.

Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC).


Taxonomic notes

Originally described as Boletus puniceus (Thiers 1965), however, this name was previous used for a species described from China (Chiu 1948); Thiers (1975) then changed the name to Boletus amygdalinus. Based on phylogenetic research, it was transferred into the genus Suillellus (Vizzini 2014).


Why suggested for a Global Red List Assessment?

Suillellus amygdalinus is a common bolete in oak woodlands across western North America.

Population is widespread, and no decline has been observed. We recommend it should be listed as Least Concern (LC).


Geographic range

Very common much of the oak zone in California, USA, south into Baja California, Mexico, with scattered populations north into the Columbia River valley in Washington.


Population and Trends

Population is widespread, occurring with oaks across the Pacific states. No decline has been noted.

Population Trend: Stable


Habitat and Ecology

Ectomycorrhizal with oaks (Quercus spp.), especially Coast Live Oak (Quercus agrifolia). Fruiting from fall into spring.


Threats

No specific threats have been identified with regards to this species.


Conservation Actions

No specific conservation actions are needed with regards to this species.


Research needed

There are at least two undescribed Suillellus species occurring in western North America in the process of being described; delimiting these species from existing records of Suillellus amygdalinus will be needed.


Use and Trade

None known.


Bibliography

Chiu, W.F. 1948. The boletes of Yunnan. Mycologia 40 (2): 199–231.

Siegel, N. and Schwarz, C. 2016. Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.

Thiers, H.D. 1975. California Mushrooms—A Field Guide to the Boletes. Hafner Press: New York, NY. 261 p

Wood, M.G. and Stevens, F.A. 2020. MykoWeb; California Fungi. https://www.mykoweb.com/CAF/species/Suillellus_amygdalinus.html


Country occurrence

Regional Population and Trends

Country Trend Redlisted