Tricholoma pessundatum    (Fr.:Fr.) Quél. 

common name(s) : Tacked Knight 

New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Agaricales/Tricholomataceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Tricholomatales/Tricholomataceae/Tricholomatoideae/Tricholomateae  
(unconfirmed synonyms: Tricholoma tridentinum)  

edibility : poisonous

photo gallery of  Tricholoma pessundatum
photo gallery of  Tricholoma pessundatum potential confusions with  Tricholoma pessundatum toxicity of Tricholoma pessundatum genus Tricholoma  

The cap is reddish brown, convex then expanded, sometimes slightly umbonate; its margin is slightly grooved, with round and darker, concentric blotches. The cap surface is smooth, very viscid.

The stem is whitish, washed with reddish-brown from the bottom, more or less equal, without ring nor ring zone.

The flesh is white, unchanging; its taste is mealy, mild to bitter; the odour is strongly mealy, or of cucumber or watermelon; its texture is fibrous.

The gills are white, their edges dotted with rust when ageing, emarginate to adnexed, crowded, broad . The spore print is white. This species is mycorrhizal. It grows on the ground, in coniferous woods, on a rather calcareous soil, more frequently with pines, but also with spruce, fir.

The fruiting period takes place from September to November.
Dimensions: width of cap approximately 8 cm (between 5 and 12 cm)
  height of stem approximately 7 cm (between 4 and 10 cm)
  thickness of stem (at largest section) approximately 20 mm (between 10 and 35 mm)

Chemical tests : none.

Distinctive features : Red-brown cap, single coloured, very viscid, with a slightly grooved margin; strong mealy odour and taste; white stem washed with brown, ringless; with conifers (pines)

Tricholoma pessundatum is rare and confined in the forest of Rambouillet, and is infrequent, more generally speaking .
here should be the distribution map of Tricholoma pessundatum in the forest of Rambouillet
Above : distribution map of Tricholoma pessundatum in the forest of Rambouillet

page updated on 14/01/18