Tricholoma colossus    (Fr.) Quél. 

common name(s) : Giant Knight 

New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Agaricales/Tricholomataceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Tricholomatales/Tricholomataceae/Tricholomatoideae/Tricholomateae  

synonyms: Tricholoma colossum 

edibility : edible

potential confusions with  Tricholoma colossus toxicity of Tricholoma colossus genus Tricholoma  

The cap is pinkish buff then red-brown, hemispherical then convex; its margin is whitish, inrolled. The cap surface is smooth, shiny, slightly viscid, sticky.

The stem is full, very thick, club-shaped or with a more or less bulbous base, whitish above the thin, more or less visible cottony ring, but progressively covered with reddish brown markings below.

The flesh is white, slowly turning salmon pink when exposed to air; its taste is mild to very slightly bitter with age; the odour is faint; its texture is fibrous.

The gills are whitish to pinkish, stained with vinaceous brown with age, emarginate, crowded, narrow . The spore print is white. This species is mycorrhizal. It grows on the ground, in coniferous woods, on a rather non calcareous (except for some authors) soil, grows more often on high ground, favouring pines.

The fruiting period takes place from September to November.
Dimensions: width of cap approximately 17 cm (between 7 and 28 cm)
  height of stem approximately 11 cm (between 5 and 20 cm)
  thickness of stem (at largest section) approximately 50 mm (between 30 and 60 mm)

Distinctive features : Large species; buff to reddish brown cap, slightly viscid; club-shaped stem, whitish above the thin cottony ring, covered with reddish brown markings below; white flesh, slowly turning pink when exposed to air, slightly bitter with age, odourless; in coniferous woods of mountainous regions (favouring pines)

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



page updated on 14/01/18