Summary:
Features include flat growth on wood with the white to buff pore surface exposed, soft consistency, easy separability, whitish rhizomorphs, and microscopic characters including small spores. The description is derived from Gilbertson(1).
Skeletocutis alutacea has been found in BC, WA, OR, ID, ON, AR, CA, IN, MA, MS, MT, NC, NY, SC, TN, VA, Europe, and New Zealand, (Gilbertson).
Cap:
growing flat on wood with pore surface exposed, up to 20cm across, soft, easily separated from wood; sterile margin "white to cream-colored, cottony to fimbriate or with conspicuous, white to cream-colored rhizomorphs up to 1 mm in diameter"
Flesh:
subiculum less than 0.1cm thick, soft-fibrous; white to cream
Pores:
4-8 per mm, circular to angular, with thin walls that appear finely granulose; white to pale ochraceous buff, glancing [showing a change in appearance from dull to lustrous when the orientation to light is changed]; tube layer up to 0.1cm thick, "cream-colored, drying brittle and shattering when cut"
Microscopic:
spores 3.5-5 x 1-1.5 microns, cylindric, slightly curved, smooth, inamyloid, colorless; basidia 4-spored, 11-16.5 x 4.5-6 microns, clavate, with basal clamp; cystidia none, cystidioles present, 11-15 x 4-4.5 microns, fusoid, with basal clamp; hyphae dimitic, skeletal hyphae of subiculum 2-3 microns wide, colorless, thick-walled, nonseptate, rarely branched, generative hyphae of subiculum 2.5-4.5 microns wide, colorless, thin-walled, with clamp connections, rarely branched; hyphae of trama "similar, incrusted in dissepiment edges"
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