Boletus erythropus fo. junquilleus    (Quél.) Munoz 



New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Boletales/Boletaceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Boletales/Boletaceae/Boletoideae [ section:Luridi sub-section:Luridini]  

synonyms: Neoboletus junquilleus, Boletus junquilleus 

edibility : unknown edibility

photo gallery of  Boletus erythropus fo. junquilleus
photo gallery of  Boletus erythropus fo. junquilleus potential confusions with  Boletus erythropus fo. junquilleus toxicity of Boletus erythropus fo. junquilleus genus Boletus  

The cap is yellow, turning blue at the slightest touch, fleshy and firm, thick, hemispherical, then convex and eventually flattened. The cap surface is downy and dry, as if covered with a fine dust, slightly viscid in damp weather. The cap margin is regular, inrolled a long time, thin.

The stem is thick, full, sturdy, cylindrical to obese or swollen towards its base. It is yellow coloured, the whole stem being densely covered with bright orange-yellow to red-orange dots. It turns blue when touched or bruised, and does not have any network..

The flesh is thick, dense and firm, getting softer when mature. It is bright yellow, with brown or purple at the base. It turns blue or violet quickly and strongly when in contact with air, then the colour shifts to greenish.; its taste is faint and pleasant; the odour is faint and pleasant;

The tubes are thin, free, more or less long (10-20mm), yellow, turning blue when sliced..

The pores are narrow, round, bright yellow, more orange towards margin, turning dark blue when pressed. The spore print is dark olive brown.

It grows in deciduous woods, on a rather acid soil, with beech, oak.

The fruiting period takes place from August to November.
Dimensions: width of cap approximately 9 cm (between 2.5 and 15 cm)
  height of stem approximately 10 cm (between 5 and 15 cm)
  thickness of stem (at largest section) approximately 35 mm (between 20 and 50 mm)

Chemical tests : The flesh does not react to iodine.

Distinctive features : entirely yellow; turning blue instantly and intensely when touched or cut; yellow-orange dots on stem; pores and tubes yellow

Boletus erythropus fo. junquilleus is quite rare and localised in the forest of Rambouillet, and is quite rare, more generally speaking .
here should be the distribution map of Boletus erythropus fo. junquilleus in the forest of Rambouillet
Above : distribution map of Boletus erythropus fo. junquilleus in the forest of Rambouillet



page updated on 14/01/18