- Proposed
- Under Assessment
- Preliminary Assessed
- Assessed
- LCPublished
Squamanita pearsonii Bas
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- Scientific name
- Squamanita pearsonii
- Author
- Bas
- Common names
Strathy Strangler- IUCN Specialist Group
Mushroom, Bracket and Puffball- Kingdom
- Fungi
- Phylum
- Basidiomycota
- Class
- Agaricomycetes
- Order
- Agaricales
- Family
- Tricholomataceae
- Assessment status
- Published
- Assessment date
- 2019-03-28
- IUCN Red List Category
- LC
- Assessors
- Griffith, G.
- Reviewers
- Gonçalves, S.C., Brandrud, T.-E. & Saar, I.
Assessment Notes
The content on this page is fetched from The IUCN Red List of Threatened Species: https://www.iucnredlist.org/species/147534726/148204367
Justification
Squamanita pearsonii is one of the rarer members of genus Squamanita, known from only 12 localities globally. In Europe it has been recorded less than 10 times, and even less in North America, but it is reported from both coasts there. The species is parasitic on the fungus Cystoderma amianthinum which is widespread and common and not declining. The number of unknown localities is difficult to estimate and could be much higher than the current available records, but the total population size is estimated to be greater than 2,000 mature individuals. This species is thus assessed as Least Concern, research on its distribution and population size is recommended.Geographic range
Squamanita pearsonii is endemic to temperate habitats in the northern hemisphere.Population and Trends
Squamanita pearsonii is globally rare, though seen in Europe with slightly more frequency than in North America. Its host Cystoderma amianthinum is widespread and common, with no evidence of decline. Relative to S. paradoxa that also parasites the same host, it is much rarer, it has been recorded only 7 times (vs 176 records in Europe for S. paradoxa). Globally only known from 12 localities in spite of an increase survey effort in grasslands.
The number of unknown localities is difficult to estimate and could be much higher than the current available records, but the total population size is estimated to be greater than 2,000 mature individuals (Dahlberg and Mueller 2011).
Population Trend: unknown
