Gymnopilus penetrans

(Family: Cortinariaceae)
Gymnopilus penetrans
by: klair


The orange-brown caps of this fungus are found beneath Pines, and increasingly, on wood chip that is of a coniferous origin. As reflected in the name, the gills turn dark rusty brown with age, first becoming spotted with brown.

Pileus (Cap) / Gill:

  • convex Shape: Convex
  • glabrous Decorations: Glabrous
  • free Gill attachment: Free
  • No decurrent tooth
  • crowded Gill spacing: Crowded

Crowded. Ochraceous yellow becoming tawny.


  • equal Shape: Equal
  • unswollen Base: Unswollen

35mm-70mm long x 5mm-10mm. Fibrous appearance. Bronze with white downy deposit at base. Hollow. Ring Transient.


Grows on wood

On wood, especially pine debris.


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