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- Under Assessment
- Preliminary Assessed
- Assessed
- LCPublished
Suillus americanus (Peck) Snell
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- Scientific name
- Suillus americanus
- Author
- (Peck) Snell
- Common names
Chicken Fat Mushroom- American suillus
- American slippery Jack
Maślak syberyjski, maślak amerykański forma syberyjska
Масленок сибирский
Siberi tatik
klouzek sibiřský- IUCN Specialist Group
Mushroom, Bracket and Puffball- Kingdom
- Fungi
- Phylum
- Basidiomycota
- Class
- Agaricomycetes
- Order
- Boletales
- Family
- Suillaceae
- Assessment status
- Published
- Assessment date
- 2021-04-28
- IUCN Red List Category
- LC
- Assessors
- Tanya Svetasheva (Leo Tolstoy Tula State Pedagogical University, Russia); Izabela Kalucka; Armin Mešić; Susana C. Gonçalves
- Reviewers
- Anders Dahlberg (Swedish Species Information Centre, Uppsala / IUCN SSC Cup-fungus, Truffle and Ally Specialist Group)
Assessment Notes
The content on this page is fetched from The IUCN Red List of Threatened Species: https://www.iucnredlist.org/species/167138549/247852060
Justification
Suillus americanus is an edible ectomycorrhizal fungus associated with five-needle pines, across the northern hemisphere. It is common and there is no evidence of significant decline. Therefore, it is assessed as Least Concern (LC).Taxonomic notes
The species was previously known under two names, Suillus sibiricus and S. americanus, and subsumed under S. americanus by Klofac (2013). Molecular data from Nguyen et al. (2016) supported this change due to a lack of discernable phylogenetic structure based on ITS sequences in the S. americanus clade.Geographic range
Suillus americanus is a widespread species in the Northern Hemisphere (GBIF.org 2021). It is found in North America, Central and Eastern Europe, and Asia. It does not occur naturally in the Southern Hemisphere, although it might have been introduced with the establishment of five-needle pine plantations (e.g. Pinus strobus in South Africa).Population and Trends
The population size of Suillus americanus is very large, as it is such a widespread species. Its population may be, regionally, in decline due to loss of hosts across some of its range, but likely stable in other large areas, especially Russia.
Population Trend: Unknown
Habitat and Ecology
Suillus americanus is an ectomycorrhizal fungus that associates exclusively with five-needle pines, usually what are called white pines (e.g. Pinus strobus, P. monticola, P. lambertiana, P. longaeva, P. ayacahuite, P. cembra, P. peuce, P. wallichiana) in natural forests, near-natural forests (extensively used), plantations, and as isolated trees.Threats
There appear to be no particular large scale threats worldwide. Regionally it is assessed as threatened due to loss of its five-needle pine habitat (e.g. in Austria and Germany; Dämmrich et al. 2016, Dämon and Krisai-Greilhuber 2017).Conservation Actions
Reducing habitat loss is the main needed action. In North America, efforts to maintain populations of host trees are ongoing. In Europe, many sites are within nature reserves, so threats to the species are reduced.Careful morphological studies coupled with molecular data from genes other than the ITS, including from type specimens, and host association data are needed to ascertain the (subtle) differences between the varieties and formae within Suilus americanus (Nguyen et al. 2016).
