Catathelasma imperiale    (Fr.) Singer 

New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Agaricales/Tricholomataceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Tricholomatales/Tricholomataceae/Leucopaxilloideae/Biannulariae  

synonyms: Armillaria imperialis, Biannularia imperialis, Armillaria imperiale, Catathelasma imperialis 

edibility : discard

potential confusions with  Catathelasma imperiale toxicity of Catathelasma imperiale genus Catathelasma  

The cap is brown yellow to dark brown; its margin is with white veil remnants, often wavy. The cap surface is smooth, not viscid nor sticky.

The stem is short (shorter than cap diameter), pointed at the base, deeply buried into the ground, with a ring.

The flesh is whitish, unchanging; its taste is mealy, of cucumber, then slightly bitter; the odour is mealy or of cucumber; its texture is fibrous.

The gills are whitish then pale ochre, adnate, crowded . The spore print is white. This species is saprophytic. It grows on the ground, in coniferous (sometimes deciduous) woods, in mountainous regions, on a rather calcareous soil, with pine, spruce.

The fruiting period takes place from July to November.
Dimensions: width of cap approximately 17 cm (between 6 and 40 cm)
  height of stem approximately 12 cm (between 5 and 18 cm)
  thickness of stem (at largest section) approximately 45 mm (between 20 and 80 mm)

Distinctive features : double ring, funnel-shaped; decurrent gills

Catathelasma imperiale is still unreported so far in the forest of Rambouillet, and is quite rare, more generally speaking .

page updated on 14/01/18