Tricholoma sulphureum    (Bull.:Fr.) P. Kumm. 

common name(s) : Stinky Knight, Sulphur Knight, Sulfur Tricholoma 

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

synonyms: Tricholoma sulfureum, Tricholoma sulfureum-bufonium, Tricholoma bufonium 
(unconfirmed synonyms: Tricholoma sulphureum-bufonium)  

edibility : poisonous

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

The cap is sulphur yellow, sometimes orange at the disk, convex then flattened, sometimes slightly umbonate; its margin is smooth, incurved, sometimes wavy. The cap surface is smooth, dry, matt.

The stem is yellow, more or less equal, full, without ring.

The flesh is yellow, unchanging; its taste is mealy; the odour is unpleasant and very strong, of carbide or gas tar; its texture is fibrous.

The gills are sulphur yellow, emarginate, rather distant . The spore print is white. This species is mycorrhizal. It grows on the ground, in broad-leaved (rarely coniferous) woods, on a rather acid soil, with oak, beech.

The fruiting period takes place from June to November.
Dimensions: width of cap approximately 6 cm (between 2 and 12 cm)
  height of stem approximately 7 cm (between 2 and 13 cm)
  thickness of stem (at largest section) approximately 11 mm (between 5 and 20 mm)

Chemical tests : none.

Distinctive features : Entirely sulphur-yellow, sometimes with red tinge on cap centre (former bufonium variety); very strong and unpleasant smell of coal gas or tar; with deciduous trees

Tricholoma sulphureum is occasional and very widely present in the forest of Rambouillet, and is frequent, more generally speaking .
here should be the distribution map of Tricholoma sulphureum in the forest of Rambouillet
Above : distribution map of Tricholoma sulphureum in the forest of Rambouillet

page updated on 14/01/18