BROWN PORED BOLETE

Flesh changes colour when cut to blue, pink, red or brown

Total, rapid colour change to blue

Habitat Area

Under broadleaf hardwood trees. Boletus vermiculosus is said to be very rare, growing under oaks and beeches. However, we found it frequently in Basse-Mauricie, Quebec, in a mixed forest dominate by conifers.

Cap

Orange to yellow-brown or reddish-brown when young, cinnamon-brown in ag

Margin

Even.

Tubes

Adnate, depressed near the stalk, staining blue rapidly.

Pores and Pore Surface

Mainly red-brown, staining blue when bruised. For Boletus vermiculosus, pore surface is typically brown when young, decoming reddish brown to brownish orange in age. For Boletus vermiculosoides, the pore surface is dark brown when young and paler in age. Pores circular, 2-3 per mm.

Stalk

Nearly equal or enlarging downward, non-reticulate, pale yellow toward the top, orange or reddish at the bottom.

Stalk Feature

Staining blue-black when bruised.

Flesh

Total, rapid colour change to blue. In the stipe, sometimes tints of yellow or brown in the stipe. the flesh invaded by insects larvae take a reddish color.

Chemical reactions

FLESH: towards orange beige with KOH, NaOH; towards gray with FeSO4, towards beige then dark gray with NH4OH; to black with phenol; little reaction with formalin. CAP: towards brown with KOH, NaOH andmNH4OH; to gray or black with FeSO4, phenol and formalin. TUBES: everything turns blackish and the center of the phenol turns white.