August. I found
only one specimen of…
Tylopilus rubrobrunneus (Reddish Brown Bitter Bolete). It was
growing near hardwoods just to the side of the mountain bike/hiking trail that runs
parallel, a little higher up the hill, than my routine trail close to the shore
of the reservoir. It was quite tall compared with the diameter of its cap. A
‘regal’ bolete.
Its cap was
approximately 2.5 inches in diameter and a distinct purple-brown. The
irregularities in the cap are thought to be the result of a parasitizing
fungus.
The pore surface
was pure white and translucent. The pores were angular and clearly visible with
the naked eye, approximately 2-3 pores/mm. The purple color at the margin of
the cap, is clearly visible in the first of these two photographs.
The stem was
whitish-brown, tapering from the cap towards the base. The effects of the parasitizing fungus are clearly visible in this photograph. The stem looked smooth,
but showed some…
reticulation that
was visible at the apex of the stem near the cap.
Tylopilus rubrobrunneus is found only in North America, east of the Rocky
Mountains.
Related post:
References:
Mushroom Expert: Tylopilus
rubrobrunneus
The Bolete Filter: Tylopilus
rubrobrunneus (Reddish
Brown Bitter Bolete)
Discover Life: Tylopilus
rubrobrunneus
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