Suillus bovinus    (L.:Fr.) Kuntze 

common name(s) : Bovine Bolete 

New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Boletales/Suillaceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Boletales/Boletaceae  

synonyms: Boletus bovinus, Ixocomus bovinus 

edibility : discard

photo gallery of  Suillus bovinus
photo gallery of  Suillus bovinus potential confusions with  Suillus bovinus toxicity of Suillus bovinus genus Suillus  

The cap is tawny, dark yellow to orange-brown, not very fleshy, of convex then expanded shape, often bumpy at the centre and eventually depressed. The cap surface is smooth, slimy and sticky when damp, shiny and wrinkled when dry, thin and entirely peelable. The cap margin is thick, white when young, smooth and clean, more or less irregularly wavy.

The stem is firm, full, elastic, rather short and thin, without grains or dots, sometimes streaked vertically. It is of more or less equal diameter, often sinuate, thickening close to the tubes, and without any ring. It is of the same colour as the cap, or paler, with pink mycelium at the base..

The flesh is thick in the cap, elastic, firm in the young specimens, then soft and often full of maggots in the cap. It is white to pale cream-yellow, becoming a bit reddish or blueish when exposed to air, and tawny orange in the stem; its taste is very faint, mild or slightly bitter; the odour is weak (fruity or of puffball, according to authors);

The tubes are decurrent, large, short (4-10 mm), and not easily removed from cap. They are beige then mustard yellow and eventually brown.

The pores are large (1 to 2,5mm wide), angular, toothed, elongated, containing 4 or 5 smaller pores. They are whitish to brown yellow then olive brown and they turn brown when pressed. The spore print is olive brown.

It grows in pine woods, with conifers in all sorts of damp places. It is found in large colonies, sometimes in tufts of a few individuals, on a rather acid soil, with two-needle pines (Scots pines).

The fruiting period takes place from June to November.
Dimensions: width of cap approximately 8 cm (between 3 and 15 cm)
  height of stem approximately 6 cm (between 2 and 10 cm)
  thickness of stem (at largest section) approximately 10 mm (between 5 and 20 mm)
  spores : 6-11 x 3-4 microns, spindle-shaped to ellipsoid

Distinctive features : slimy, buff to tawny brown cap; large yellow pores, irregular, containing smaller pores inside; decurrent tubes, not easily separated from cap; stem without ring; coming in large troops, sometimes tufted, under pines, privileging damp areas

Suillus bovinus is occasional and widely present in the forest of Rambouillet, and is occasional, more generally speaking .
here should be the distribution map of Suillus bovinus in the forest of Rambouillet
Above : distribution map of Suillus bovinus in the forest of Rambouillet

page updated on 14/01/18