Macrolepiota mastoidea    (Fr.:Fr.) Singer 

common name(s) : Slender Parasol, Umbonate Parasol, Graceful Parasol 

New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Agaricales/Agaricaceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Agaricales/Lepiotaceae/Leucocoprineae  

synonyms: Macrolepiota gracilenta, Macrolepiota konradii, Macrolepiota umbonata, Lepiota excoriata-konradii, Lepiota konradii, Lepiota gracilenta, Lepiota mastoidea, Lepiota umbonata 
(unconfirmed synonyms: Lepiota rickenii, Macrolepiota excoriata-montana, Macrolepiota rickenii)  

edibility : edible, good

photo gallery of  Macrolepiota mastoidea
photo gallery of  Macrolepiota mastoidea potential confusions with  Macrolepiota mastoidea toxicity of Macrolepiota mastoidea genus Macrolepiota  

The cap is brown scales on a cream background, hemispherical then expanded, with a clear umbo; its margin is smooth or with scales hanging. The cap surface is scaly, not viscid nor sticky.

The stem is finely scaly, white with brown stains, bulbous, with a simple membranous ring, not fringed, not very mobile.

The flesh is white, unchanging; its taste is pleasant, nutty; the odour is pleasant, of walnut or butter; its texture is fibrous.

The gills are white, free, crowded . The spore print is white. This species is saprophytic or mycorrhizal. It grows on the ground, in grasslands: meadows, clearings, wood edges or open deciduous woods.

The fruiting period takes place from July to December.
Dimensions: width of cap approximately 10 cm (between 5 and 15 cm)
  height of stem approximately 13 cm (between 5 and 25 cm)
  thickness of stem (at largest section) approximately 15 mm (between 8 and 35 mm)

Chemical tests : none.

Distinctive features : cap disrupting into brown scales; clearly visible umbo; slender stem, with thick (often double) ring, brown below; gills free, with a pseudo-collarium (circular ring around stem where the gills attach to)

Macrolepiota mastoidea is occasional and widely present in the forest of Rambouillet, and is occasional, more generally speaking .
here should be the distribution map of Macrolepiota mastoidea in the forest of Rambouillet
Above : distribution map of Macrolepiota mastoidea in the forest of Rambouillet



page updated on 14/01/18