Cortinarius triumphans    Fr. 

common name(s) : Birch Webcap 

New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Agaricales/Cortinariaceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Cortinariales/Cortinariaceae/Cortinarieae [sub-genus:Phlegmacium]  

synonyms: Phlegmacium crocolitus, Cortinarius crocolitus, Phlegmacium triumphans 
(unconfirmed synonyms: Cortinarius crocrolitus)  

edibility : discard

photo gallery of  Cortinarius triumphans
photo gallery of  Cortinarius triumphans potential confusions with  Cortinarius triumphans toxicity of Cortinarius triumphans genus Cortinarius  

The cap is tawny yellow. The cap surface is smooth, viscid in wet weather.

The stem is whitish to yellow, with a ring zone (cortina remains) made of scaly bands.

The flesh is creamy white to yellow, unchanging; its taste is mild; the odour is weak or not distinctive; its texture is fibrous.

The gills are cream then lilac then brown, adnate, crowded . The spore print is rusty brown. This species is mycorrhizal. It grows on the ground, in damp broad-leaved woods, with birch.

The fruiting period takes place from July to November.
Dimensions: width of cap approximately 10 cm (between 5 and 15 cm)
  height of stem approximately 11 cm (between 3 and 20 cm)
  thickness of stem (at largest section) approximately 20 mm (between 6 and 30 mm)

Chemical tests : flesh becoming yellow when in contact with potash (KOH) or ammonia (NH3).

Distinctive features : Slimy yellow cap; stem with yellow-orange belts below the cortina; white to cream gills (eventually brown), with shades of blue

Cortinarius triumphans is quite rare and localised in the forest of Rambouillet, and is infrequent, more generally speaking .
here should be the distribution map of Cortinarius triumphans in the forest of Rambouillet
Above : distribution map of Cortinarius triumphans in the forest of Rambouillet



page updated on 14/01/18