Boletus regius    Krombh. 

common name(s) : Royal Bolete 

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

synonyms: Butyriboletus regius 

edibility : edible

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

The cap is bright coloured : pink-red, cherry-red or red-brown, firm, fleshy, convex, slow to become expanded, often irregular. The cap surface is finely downy and dry. The cap margin is more or less lobed.

The stem is sturdy, thick and swollen, cylindrical or bulbous, yellow sometimes with shades of red. It is covered with a thin yellowish network (same colour as stem).

The flesh is very dense, yellow, unchanging or hardly turning blue (sky blue) when cut and exposed to air; its taste is pleasant; the odour is pleasant and particular, according to authors of nut oil, fresh meat or bread, hazelnut;

The tubes are adnate or slightly decurrent, rather long, lemon yellow to golden yellow, unchanging when exposed to air.

The pores are small and round, bright yellow to golden yellow, generally unchanging but sometimes turning faintly blue to blue-green when pressed. The spore print is greenish tobacco-brown.

It grows in warm broad-leaved woods (this mushroom likes warm places and privileges southern parts of Europe), rarely with conifers, on a rather acid soil, with chestnut, oak, beech, birch.

The fruiting period takes place from July to September.
Dimensions: width of cap approximately 13 cm (between 5 and 20 cm)
  height of stem approximately 11 cm (between 5 and 18 cm)
  thickness of stem (at largest section) approximately 35 mm (between 20 and 60 mm)
  spores : 10-17 x 3,5-5 microns, almost spindle-shaped

Distinctive features : red colour of the cap, yellow colour everywhere else; bright yellow to golden yellow pores; lemon yellow network on the stem; flesh turning slightly blue when exposed to air

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



page updated on 14/01/18