Paralepistopsis amoenolens

Paralepistopsis amoenolens, commonly known as the paralysis funnel,[1] is an agaric fungus ascribed to the large genus Clitocybe. It was originally described from Morocco in 1975 as Clitocybe amoenolens by the French mycologist Malençon. It was discovered to be poisonous after several people had consumed specimens all found in the alpine Maurienne valley in the Savoie department over three years. They had mistaken it for the edible common funnel cap (Infundibulicybe sp.) or Paralepista flaccida (formerly Lepista inversa).[2]

Paralepistopsis amoenolens
Scientific classification
Kingdom:
Fungi
Division:
Basidiomycota
Class:
Agaricomycetes
Order:
Agaricales
Family:
Tricholomataceae
Genus:
Paralepistopsis
Species:
P. amoenolens
Binomial name
Paralepistopsis amoenolens
(Malençon) Vizzini
Synonyms

Clitocybe amoenolens Malençon

Clitocybe amoenolens
float
Mycological characteristics
gills on hymenium
cap is depressed
stipe is bare
spore print is white
ecology is saprotrophic
edibility: poisonous

In 2012, following DNA analysis, Vizzini and Ercole assigned this species to the new genus Paralepistopsis, which forms a separate clade from other Clitocybes.[3] This change has been accepted by Species Fungorum and the Global Biodiversity Information Facility and so the correct name is currently Paralepistopsis amoenolens.[4][5]

A similar species from Japan, C. acromelalga, known as the poison dwarf bamboo mushroom, had been discovered to be poisonous in 1918.[6]

The resulting syndrome of fungus-induced erythromelalgia lasted from 8 days to 5 months, although one person exhibited symptoms for three years.[7]

References
  1. Evans S, Kibby G. (2004). Pocket Nature: Fungi. Dorling Kindersley ISBN 0-7513-3696-3
  2. Saviuc PF, Danel VC, Moreau PA, Guez DR, Claustre AM, Carpentier PH, Mallaret MP, Ducluzeau R (2001). "Erythromelalgia and mushroom poisoning". J Toxicol Clin Toxicol. 39 (4): 403–07. doi:10.1081/CLT-100105162. PMID 11527236.
  3. See Vizzini A; Ercole E (2012). "Paralepistopsis gen. nov. and Paralepista (Basidiomycota, Agaricales)". Mycotaxon. 120: 253–267. doi:10.5248/120.253. hdl:2318/124414.. The authors provide a phylogram which indicates the evidence that Paralepistopsis forms a separate clade.
  4. "Paralepistopsis amoenolens (Malençon) Vizzini, 2012". Global Biodiversity Information Facility. GBIF. Retrieved 2017-02-25.
  5. "Paralepistopsis amoenolens page". Species Fungorum. Royal Botanic Gardens Kew. Retrieved 2017-02-25.
  6. Ichimura, J (1918). "A new poisonous mushroom". Bot Gaz (Tokyo). 65: 10911.
  7. Diaz, James H. (February 2005). "Syndromic diagnosis and management of confirmed mushroom poisonings". Critical Care Medicine. 33 (2): 427–36. doi:10.1097/01.CCM.0000153531.69448.49. PMID 15699849.


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