Summary: Features include flat growth on conifer wood, uneven brown color, soft texture, with a distinct brown zone in the flesh next to the wood. The current name in the online Species Fungorum, accessed November 16, 2020, was Anthoporia albobrunnea, but the current name listed in MycoBank, accessed the same day, was Antrodia albobrunnea. The description is derived from Gilbertson(1).
Microscopic: spores 5-7 x 1.5-2 microns, allantoid to cylindric, smooth, inamyloid, colorless, thin-walled; basidia 4-spored, 15-20 x 4-6 microns, with basal clamp connection; cystidia "none, but sometimes hyphal ends penetrate the hymenium"; hyphal system dimitic, generative hyphae with clamp connections, in the white context and in the trama hyaline and thin-walled, 2-4 microns wide, in the brown layer next to the substrate pale brown and with scattered clamp connections, 3-5 microns wide, skeletal hyphae thick-walled to almost solid, rarely dichotomously branched, 2-5 microns wide
Notes: Antrodia albobrunnea has been found in BC, WA, OR, ID, AB, YT, AK, AZ, MT, WY, CO, UT, and USSR to central Europe and the inner parts of the Scandinavian peninsula, (Gilbertson).
Habitat and Range
Habitat
annual, or sometimes reviving a second year, on conifer wood, seemingly most common on Pinus (pine), restricted to high altitude and areas with continental climate, causes a brown cubical rot, "white mycelial felts develop in the decayed wood"