Gymnopilus penetrans    (Fr.:Fr.) Murrill 

common name(s) : Common Rustgill, Penetrating Agaric 

New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Agaricales/Strophariaceae  
Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Cortinariales/Crepidotaceae  

synonyms: Gymnopilus stabilis, Gymnopilus hybridus, Flammula penetrans, Flammula hybrida 

edibility : inedible

photo gallery of  Gymnopilus penetrans
photo gallery of  Gymnopilus penetrans potential confusions with  Gymnopilus penetrans toxicity of Gymnopilus penetrans genus Gymnopilus  

The cap is tawny yellow to orange-red; its margin is smooth, often wavy. The cap surface is smooth, not viscid nor sticky.

The stem is brown-yellow, darker towards base, and covered with white down at the base, without ring, or with a ring zone (remnants or cortina).

The flesh is yellow, darker in stem base, unchanging; its taste is bitter; the odour is faint, of iodine; its texture is fibrous.

The gills are yellow then rusty red, adnate, crowded . The spore print is red brown. This species is saprophytic. It grows on dead wood, in tufts or isolated, in coniferous (sometimes deciduous) woods.

The fruiting period takes place from July to December.
Dimensions: width of cap approximately 5 cm (between 1 and 8 cm)
  height of stem approximately 6 cm (between 2 and 10 cm)
  thickness of stem (at largest section) approximately 6 mm (between 3 and 10 mm)

Chemical tests : none.

Distinctive features : Yellow to orange-red cap, silky, non hygrophanous; stem with cortina-like ring zone with more or less visible white fibrils and white dew at its base; golden-yellow gills, stained with rusty dots; pale flesh, very bitter; on conifer debris

Gymnopilus penetrans is frequent and widely present in the forest of Rambouillet, and is frequent, more generally speaking .
here should be the distribution map of Gymnopilus penetrans in the forest of Rambouillet
Above : distribution map of Gymnopilus penetrans in the forest of Rambouillet



page updated on 14/01/18