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Species Information
Summary: Features include 1) a finely tomentose to bald, bracket-like or shelf-like fruitbody that is rigid to hard, in shades of whitish to brownish, with zones of darker or more reddish brown color, 2) nonzoned cream flesh, 3) thick-walled cream to grayish thick-walled pores, and 4) microscopic characters. The description is derived from Gilbertson(1) except where noted.
Trametes ochracea has been found in BC, WA, OR, ID, AB, MB, NS, ON, PQ, SK, AK, AZ, CO, CT, IA, MA, ME, MI, MN, MT, NH, NY, SD, UT, VT, WI, and WY, (Gilbertson).
Cap: bracket-like or bent outward from flat pore surface to form a shelf, dimidiate [roughly semicircular] to elongated, tough-fibrous; vinaceous buff to avellaneous with zones of reddish brown, or pale buff with faint darker zones; finely tomentose to almost bald often in different zones, [dimensions not given by Gilbertson(1) but www.cegep-sept-iles.qc.ca, accessed January 25, 2010 gave width along substrate as 1.5-6cm, projection from substrate as 1.5-4cm and thickness as 0.3-0.6cm]
Flesh: up to 0.5cm thick, tough-fibrous, not zoned; cream
Pores: 3-4 per mm, circular, thick-walled; cream to cinereous; tube layer up to 0.4cm thick, colored as flesh and continuous with it
Microscopic: spores 6-8 x 2-2.5 microns, cylindric, slightly curved, smooth, inamyloid; basidia 4-spored, 15-20 x 4-5 microns, clavate, with basal clamp; cystidia absent; hyphae trimitic, generative hyphae of context 2-3.5 microns wide, thin-walled, with clamp connections, skeletal hyphae of context 4-8 microns wide, thick-walled, nonseptate, binding hyphae of context 2.5-5 microns wide, "thick-walled, nonseptate, much branched"; hyphae of trama similar
Spore Deposit: white (Buczacki)
Habitat / Range
"annual or reviving", on dead wood of hardwoods, rarely on conifer wood, associated with a white rot of dead hardwoods, (Gilbertson), all year (Buczacki)
Similar Species
Trametes versicolor is less pale and more strongly zoned, with a thin flexible consistency (not rigid and hard), has a black layer in the context, and has slightly smaller pores and spores, (Gilbertson). T. versicolor and Trametes hirsuta have a black line beneath the surface tomentum of the cap, (Ginns), Trametes pubescens has a cap surface with a uniform cream color and is not zoned or very faintly zoned, (Ginns).
