Marasmius oreades (Bolton) Fr.
(Fairy Ring Champignon)

Taxonomic hierarchy:
SpeciesMarasmius oreades (Fairy Ring Champignon)
GenusMarasmius (a genus of parachute toadstools)
FamilyMARASMIACEAE (a family of toadstools)
OrderAGARICALES (mushrooms and toadstools)
SubclassAGARICOMYCETIDAE (a subclass of basidiomycetes)
ClassAGARICOMYCETES (a class of fungi)
SubphylumAGARICOMYCOTINA (a subphylum of fungi)
PhylumBASIDIOMYCOTA (spore droppers, basidiomycetes)
KingdomFUNGI (true fungi)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Marasmius oreades (Fairy Ring Champignon) :
1: Marasmius oreades (Fairy Ring Champignon)
27 May 1979 OSGR: SU94 51° 10’ N, 0° 40’ W Vice County: Surrey (VC 17) England
damp fruitbodies
Image 1: Caps and side viewsImage 2: Caps - in situ
2: Marasmius oreades (Fairy Ring Champignon)
22 Jun 1971 OSGR: TG10 52° 40’ N, 1° 10’ E Vice County: East Norfolk (VC 27) England
dry fruitbodies in a fairy ring in grass
Image 1: Caps - in situImage 2: Fairy ringImage 3: Side view - in situ

Identification Works

AuthorYearTitleSource
Treu, R. 1996 IMI Description Sheet 1277: Marasmius oreades I.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 1277.

Fairy Rings

Ingold, C.T. 2000 A note about a fairy ring of Marasmius oreades Mycologist Vol 14 (1): 33-34.

Marasmius oreades (Fairy Ring Champignon) may also be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Marasmius oreades (Fairy Ring Champignon)
BioInfoBioInfo (www.bioinfo.org.uk) has 2 host/parasite/foodplant and/or other relationships for Marasmius oreades (Fairy Ring Champignon)

The Fairy Ring Champignon is the main cause of ’Fairy Rings’ - circles of longer and darker green grass - in grassland, including meadows, lawns and road verges throughout the British Isles. The toadstools appear after rain during the summer and autumn and being somewhat leathery are quite long-lived. It is comparatively tolerant of pollution and fertilizer. Although frequently eaten, great care should be taken to avoid confusion with the deadly poisonous white Clitocybes with which it often grows.

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