Boletus venturii    Bon 



New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Boletales/Boletaceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Boletales/Boletaceae/Boletoideae [ section:Edules ]  

synonyms: Boletus citrinus, Boletus edulis-citrinus 

edibility : unknown edibility

photo gallery of  Boletus venturii
photo gallery of  Boletus venturii potential confusions with  Boletus venturii toxicity of Boletus venturii genus Boletus  

The cap is lemon-yellow, fleshy, thick, sturdy, hemispherical then convex and more or less flattened. The cap surface is smooth (sometimes rough, but not velvety), soon dry, greasy to the touch or slightly viscid when damp. The cap margin is paler, often with a white line at the edge.

The stem is thick, full, initially egg-shaped then swollen, then more or less equal or stout. It is white to pale brown. It is covered with a white, thin network, mostly visible at the stem's apex, the mesh becoming coarser downwards.

The flesh is thick, firm, white, unchanging when exposed to air; its taste is pleasant; the odour is pleasant;

The tubes are thin, easily removed from cap, whitish then yellow-greenish to green-brown, almost free, unchanging when exposed to air.

The pores are small, round, regular, white, then dull yellow, greenish yellow to green brown (concolorous to tubes), not changing colour when pressed. The spore print is olive brown.

It grows in deciduous woods, on a rather acid, but also calcareous soil.

The fruiting period takes place from July to October.
Dimensions: width of cap approximately 17 cm (between 4 and 40 cm)
  height of stem approximately 13 cm (between 3 and 25 cm)
  thickness of stem (at largest section) approximately 45 mm (between 20 and 110 mm)

Chemical tests : no reaction to ammonia.

Distinctive features : all the characters of a Penny bun (Boletus edulis), but with a lemon yellow cap; southern species

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



page updated on 14/01/18