Dissoderma paradoxum

Dissoderma paradoxum
Scientific classification Edit this classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Squamanitaceae
Genus: Dissoderma
Species:
D. paradoxum
Binomial name
Dissoderma paradoxum
(A.H.Sm. & Singer) Singer (1973)[2]
Synonyms

Cystoderma paradoxum A.H.Sm. & Singer (1948)[3]
Squamanita paradoxa (A.H.Sm. & Singer) Bas (1965)[4]

Dissoderma paradoxum, which has the recommended English name of powdercap strangler in the UK,[5] is a species of fungus in the family Squamanitaceae. It is a parasitic fungus that grows on the fruit bodies of another fungus, Cystoderma amianthinum.[6] It takes over the host and replaces the cap and gills with its own but retains the original stipe, creating in effect a hybrid between the two.[7] The species was first described as Cystoderma paradoxum by American mycologists Alexander H. Smith and Rolf Singer in 1948, based on specimens collected in Mount Hood National Forest in Oregon.[3] Cornelis Bas transferred the species to the genus Squamanita in 1965.[4] Recent molecular research, based on cladistic analysis of DNA sequences, has however shown that the species does not belong in Squamanita sensu stricto but in the related genus Dissoderma.[6] The species occurs in both North America and Europe.[6]

References

  1. ^ Gonçalves, S.C. (2025). "Squamanita paradoxa". IUCN Red List of Threatened Species. 2025 e.T125435415A125435690. doi:10.2305/IUCN.UK.2025-1.RLTS.T125435415A125435690.en. Retrieved 28 October 2025.
  2. ^ Singer R. (1973). "Diagnoses fungorum novorum Agaricalium III". Beihefte zur Sydowia. 7: 1–106 (see p. 69).
  3. ^ a b Smith AH, Singer R. (1948). "Notes on the genus Cystoderma". Mycologia. 40 (4): 454–60. doi:10.2307/3755152. JSTOR 3755152.
  4. ^ a b Bas C. (1965). "The genus Squamanita". Persoonia. 3: 331–59.
  5. ^ Holden L. (April 2022). "English names for fungi 2022". British Mycological Society. Retrieved 2023-06-02.
  6. ^ a b c Saar I, Thorn RG, Nagasawa E, Henkel TW, Cooper JA (2022). "A phylogenetic overview of Squamanita, with descriptions of nine new species and four new combinations". Mycologia. 114 (4): 769–797. doi:10.1080/00275514.2022.2059639. PMID 35695889. S2CID 249623155.
  7. ^ Sterry, Paul; Hughes, Barry (2009). Collins Complete Guide to British Mushrooms & Toadstools. HarperCollins.

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