Identifying Your Bolete
3.7
ACIDULATED BOLETE
Suillus acidus var. intermedius
Frequency
Infrequent
Habitat Area
In association with Red Pine and White Pine.
Cap
Glutinous, viscous, pale yellow becoming tan or yellow-brown, often radialy streaked in age.
Margin
Often appendiculate with soft remnants of partial veil coated with gluten.
Tubes
Short, adnate.
Pores and Pore Surface
Pores surface turn light brown when bruised. Pores angular, visible, tick walled, 1.5-2 per mm.
Stalk
Nearly equal, pale yellow to ochre-yellow, darker when bruised or with age.
Stalk Feature
Stipe glandular, viscous. Glandules brown, becoming darker with age. Partial veil covered with gluten, forming a gelatinous ring.
Chair
Whitish to pale yellow, immutable; sometimes darker yellow or tinged with orange in the stipe.
Chemical reactions
KOH and NaOH: towards the dark gray on the flesh and the cap, brown on the stipe and the tubes.
FeSO4: towards gray on the flesh, the stipe and the tubes.
NH4OH: strong and rapid reaction towards pink then gray which invades the entire cap; pinkish on the stipe and the tubes.
Phenol: no reaction. Formalin: pale gray on the flesh.
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