Identifying Your Bolete
3.3
LARCH SUILLUS, TAMARAK JACK
Suillus grevillei, Boletinus grevillei, Boletus elegans, Suillus clintonianus
Frequency
Frequent
Habitat Area
Authors say under Larch, but, in the boreal forest, we find this mushroom in stands of Jack Pine and Black Spruce. This Suillus can fructify as well on lawns as on the forest floor.
Cap
Sticky, viscous, orange to reddish-brown cap, occasionally more paler toward the margin.
Margin
Often appendiculate with velar remnants.
Tubes
Short, adnate.
Pores and Pore Surface
Pores surface yellow when young, olive-brown in age, staining brownish when bruised; pores angular, 1-3 per mm.
Stalk
Nearly equal, yellow above the annulus, reddish brown below. There is sometimes a reddish colour above the ring.
Stalk Feature
A big ascending ring, whitish with a brown and yellow margin.
Flesh
White in the cap, pale orange-yellow in the stipe, staining pinkish brown when cut.
Chemical reactions
Flesh: black with KOH, NaOH and FeSO4, gray and pinkish with NH4OH, brownish with phenol and formalin.
Cap: black with KOH, NaOH and NH4OH, no effect with FeSO4 and phenol, blackish brown with formalin.
Tubes black with KOH, NaOH and FeSO4, reddish brown with NH4OH, grayish brown with phenol and brown with formalin.
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