Suillus grevillei, Boletinus grevillei, Boletus elegans, Suillus clintonianus
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.
Pores and Pore Surface
Pores surface yellow when young, olive-brown in age, staining brownish when bruised; pores angular, 1-3 per mm.
Nearly equal, yellow above the annulus, reddish brown below. There is sometimes a reddish colour above the ring.
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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