E-Flora BC: Electronic Atlas of the Flora of British Columbia

Summary:
"Its most noteworthy character, by which it may be recognized at a glance, is its curious habit of forming the fructification on bark-covered limbs between the bark and the wood, so that the loosened bark - very noticeable on Quercus limbs - curls back, disclosing the fructification closely adnate on the wood.", (Burt, hyphen replaced by long dashes and genus name italicized). Other features of Peniophora decorticans include 1) color that is pale pinkish buff and pale gray to whitish, 2) antler-shaped paraphyses and 3) encrusted cystidia, seen only in the region next to the bark. The description is derived from Burt(7). It is common locally in Washington and Oregon, (Burt).

It has been found in BC, WA, and OR, (Ginns).

Fruiting body:
2-600cm long, 1-2cm wide, flat on substrate, closely attached, "very thin, growing on the wood, spreading longitudinally and laterally between the wood and bark, loosening the latter"; "pale pinkish buff and pale gull-gray to whitish"; pruinose, with occasionally tubercles in some collections

Microscopic:
SPORES 8-9 x 3 microns, slightly curved, even, colorless, few seen; CYSTIDIA few, up to 20-25 microns x 15 microns, encrusted, ovoid to subglobose, seen only in the region next to the substrate; PARAPHYSES "with slender, antler-shaped branches protrude from hymenium"; in section brownish, 50-90 microns thick, not zoned, "composed of densely arranged, interwoven, slightly colored, erect hyphae 3 microns in diameter, with no darker and opaque zone next to the substratum"