Summary:
Trametes pubescens forms a uniformly white to cream or buff bracket or shelf that is tomentose (coarsely hairy to finely tomentose) and nonzoned or with almost unicolorous zones, cream to buff pores that become yellowish or grayish when old, growing on hardwoods.
Trametes pubescens has been found in BC, WA, OR, ID, also AB, MB, NT, NB, NF, NS, ON, PQ, SK, YT, AK, AL, CA, CT, IA, IN, KS, MA, ME, MI, MN, MT, NC, NE, NH, NJ, NM, NY, OH, PA, SD, TN, VT, WI, WV, and WY, (Gilbertson). It also occurs in Europe, Asia, and Australia, (Breitenbach)
Cap:
up to 6cm across, bracket-like or bent outward from flat pore surface to form a shelf, dimidiate [roughly semicircular], thin, coriaceous [leathery]; cream to warm buff, not zoned or faintly zoned; tomentose or strigose [coarsely hairy] to finely pubescent [downy] with fine radial lines or almost bald, (Gilbertson), 3-10cm along wood, projecting 2-7cm, 0.2-0.7cm thick, semicircular to fan-shaped or rosette-like; white to cream when fresh, yellow to ocher-yellow when old; with indistinct concentric zones, undulating, radially wrinkled, finely appressed silky-velvety, becoming bald when old; margin sharp, thin, wavy, irregularly crenate [scalloped] to cleft, (Breitenbach)
Flesh:
up to 0.5cm thick, tough-fibrous; white to cream, (Gilbertson), leathery, tough; white, (Breitenbach)
Pores:
3-5 per mm, angular, walls becoming thin; cream to light ochraceous buff, becoming yellowish when old, or sometimes becoming cinereous when old; tube layer up to 0.4cm thick, cream to pale buff, (Gilbertson), (2)3-5 per mm, rounded-angular, sometimes rather elongated; white to ocher; tube layer 0.1-0.3(0.5)cm thick, (Breitenbach)
Stem:
sometimes attached to wood by a stem-like outgrowth or narrowly attached, (Breitenbach)
Microscopic:
spores 5-7 x 1.5-2 microns, cylindric, slightly curved, smooth, inamyloid, colorless; basidia 4-spored, 14-18 x 4.5-6 microns, clavate, with basal clamp; cystidia absent, hyphal pegs usually present; hyphae trimitic, generative hyphae of context 2-3 microns wide, "thin-walled, rarely branched, with clamps", skeletal hyphae of context 5-10 microns wide, "thick-walled, with occasional branching, nonseptate", binding hyphae of context 1.5-3 microns wide, "thick-walled, nonseptate, much branched"; hyphae of trama similar, (Gilbertson), spores 5-6 x 1.7-2.5 microns, cylindric to slightly allantoid, smooth, inamyloid, colorless, (Breitenbach)
Spore Deposit:
white (Buczacki)
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