Collection location: Edgewood Blue, Wells Gray region, British Columbia, Canada [Click for map]
ponderous bolete, several but each solitary, on trail bank in open dry birch and doug fir park land
ST: 70 × 20 mm, broadening significantly below but pinching to a point at ground, solid, reticulate ridged, whitish but brown on ridge edges, no sign of veil, stain yellow at v base when sliced in half(!)
CAP: 40-70 mm wide, hemispherical, fleshy heavy thing, brown to dark brown but some strongly areolate showing off-white flesh through copious cracks, faintly tomentose but not fibrillose
FLESH: 15-20 mm thick, off-white, firm to slightly spongy, not discoloring, no odor
TUBES: off-white, 2-3 per mm, up to 15 mm long, soft, depressed sharply at stem
SPORE: print rather light yellow-brown, smooth, elliptical, not truncated, 19-25(35!) x 5-6 µm, some with random bubbles inside
I plowed through Smith’s Boletes of Michigan for some time, but couldn’t make sense of this one. I never saw the yellow staining stem base mentioned anywhere (outside of Agaricus), and few have such long narrow spores. Seems clearly in the section Boletus, but I can’t figure where to go from there.
And once again I must apologize for not having a photo.
And without a proper drier, I’m not entirely hopeful this thing will dry before rotting, so the “Herbarium Specimen Available” might be overly optimistic.
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