Boletellus fallax

Blue-bruising, reddish brown/black, scabered stem often has  yellow by the top. Dark cap often cracks w/age. Yellowish pores bruise blue.


Genus: Boletellus

Species: fallax

  • Species 2: pictiformis var. fallax

Common Name:

Tells: Brown, coarsely shaggy scales on stem. Green- to olive-yellow pores stain blue. Yellow cap flesh quickly blues. Dark, scaly cap.

Other Information: Stem scales often arranged in a netting pattern. Spore print unknown. Identical to B’us pictiformis except that has reddish-brown pores.

Edibility: Unknown.


  • NH4OH (Ammonia): Cap skin turns black. Cap flesh has no reaction.
  • KOH: Cap skin turns deep reddish brown. Cap flesh turns pale, orangey-yellowish brown.
  • FeSO4 (Iron Salts): Cap skin has no reaction. Cap flesh has no reaction.


National Audubon Society Field guide to Mushrooms, Gary Lincoff 567 Mushrooms of West Virginia and the Central Appalachians 0 North American Boletes 84

Got something to discuss?