Summary:
Features include flat growth on wood with the ivory yellowish or tan pore surface exposed, a soft whitish margin up to 0.2cm wide, firm attachment, tough consistency, distinctly stratified tube layers, black flecks in the rotted wood, and microscopic characters including broadly elliptic, non-truncate spores, slender branched dextrinoid binding hyphae and wider, dextrinoid, rarely branched skeletal hyphae.
Perenniporia subacida has been found in BC, WA, OR, ID, NB, NF, ON, PQ, AK, AL, AR, AZ, CA, CO, FL, KS, KY, LA, MA, MN, MO, MT, NC, NM, NY, SC, TN, VA, WV, and WY, (Gilbertson).
Cap:
growing flat on wood with pore surface exposed, tough, not readily separable; margin up to 0.2cm wide, soft, fimbriate [fringed], and whitish to ivory, (Gilbertson), a simple layer of tubes spreading over logs, sponge-like or crust-like, (Phillips)
Flesh:
subiculum less than 0.1cm thick, soft, not zoned; pale buff, (Gilbertson)
Pores:
5-6 per mm, circular to angular, "rich ivory, yellowish or tan", often glancing [showing a change in appearance from dull to lustrous when the orientation of the pore surface in regard to incident light is changed], walls thick, finely fimbriate, eventually becoming thin and slightly torn; tube layers distinctly stratified, each layer up to 2cm thick, colored as subiculum, (Gilbertson), 4-6 per mm, cream to pale yellowish; tubes 0.1-0.5cm deep, often perennial and then with more than one tube layer, (Phillips)
Taste:
mild or slightly acid (Gilbertson)
Microscopic:
spores 4.5-7.5 x 3-5 microns, oval to broadly elliptic, smooth, inamyloid, colorless, thin-walled, distinctly apiculate, usually with a single droplet; basidia 4-spored, 20-40 x 5.5-8.5 microns, clavate, with basal clamp, some basidia with narrowed base; cystidia none, cystidioles embedded or projecting slightly, 13-35 x 4.5-6 microns, fusoid, with basal clamp, some lightly incrusted; hyphal system trimitic: subiculum generative hyphae 2-3 microns wide, thin-walled, with clamp connections, inconspicuous, skeletal hyphae 2.5-7 microns wide, thick-walled, nonseptate, rarely branched, binding hyphae 1-2 microns wide, some branched profusely, nonseptate, trama hyphae similar, skeletal and binding hyphae dextrinoid, (Gilbertson)
Spore Deposit:
white (Phillips)
|
