Summary:
Features include flat or shelf-like often imbricate growth on conifer wood, with individuals up to 10cm long and 3cm wide, an upper surface that is whitish, zonate, and tomentose to smooth, pores that are angular to labyrinth-like and whitish, and large spores. The description is derived from Gilbertson(1).
Antrodia heteromorpha has been found in BC, WA, OR, ID, AB, NB, NS, ON, PQ, YT, AK, AL, AZ, CA, CO, MA or RI, ME, MI, MN, MO, MT, NC, NH, NM, NY, PA, SD, TN, UT, VA, VT, WI, and WY, and it is widely distributed in north Europe and northern Asia, (Gilbertson).
Cap:
individuals up to 10cm long and 3cm wide, flat or bent outward from pore surface flat on wood to form shelf-like cap, often of large dimension when growing on underside of logs, more commonly imbricate [shingled] to nodulose when growing on stumps and standing trunks, corky and tough, tightly attached, margin distinct, white, often narrow; upper surface at first white to cream weathering to pale sordid brown, at first finely tomentose, but bald when old, or with tufts of agglutinated hyphae, zonate, either smooth or concentrically grooved
Flesh:
thin; white
Pores:
1-2 per mm., angular to sinuous or daedaleoid (labyrinth-like), on sloping substrate sometimes larger; white to cream or cork-colored to buff; walls thick, split by age and becoming dentate; tube layer up to 3cm thick, colored as pore surface
Microscopic:
spores 10-13 x 5-7 microns, cylindric to oblong elliptic, often slightly curved near apiculus, inamyloid, colorless; basidia 30-40 x 9-11 microns, clavate, with basal clamp; cystidia none: "occasional pointed cystidioles may occur between the basidia, but their presence is variable"; hyphal system dimitic, generative hyphae 2-4 microns wide, thin-walled to thick-walled with abundant clamp connections, skeletal hyphae 3-7 microns wide, thick-walled to semisolid, straight to sinuous and with occasional dichotomous branching
|
