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Page number:136 
Remarks (public):Smaller resupinate specimens of A. heteromorpha may be confusingly similar, but this species is seemingly restricted first of all to Picea. Its spores are also larger, and normally its tissue stays tough and white to cream, not becoming resinous as in A. ramentacea. 
Description type:Non-original description 
Description:Antrodia ramentacea (Berk. & Br.) Donk - Persoonia 4:339, 1966. - Polyporus ramentaceus Berk & Br., Ann. Mag. Nat. Hist. 5:210, 1879. - Trametes subsinuosa Bres., Ann. Mycol. 1:82, 1903.
Basidiocarps annual, resupinate, up to 4 mm thick, normally small and rounded, adnate, in old and dry specimens the margin is frequently curled up, tough when fresh, hard when dry, margin narrow, white and floccose; pore surface white, becoming buff to straw-coloured or unevenly resinous brown, pores angular, in small specimens 1-2 per mm, up to 1-2 mm wide in older specimens; subiculum white and tough, 1 mm thick; tube layer up to 4 mm thick, concolorous with context, resinous and brittle in old specimens; taste bitter.
Hyphal system dimitic; generative hyphae abundant, hyaline, with clamps, thin to thick-walled, in parts slightly gelatinized in KOH, moderately to frequently branched, 2.5 - 5 µm in diam; skeletal hyphae solid to thick-walled, straight, nonseptate, common in the subiculum, scattered in the trama, up to 6 µm in diam.
Cystidia absent, but fusoid, hyaline. thin-walled cystidioles common, especially in immature hymenia, 15-25 x 4-5 µm.
Basidia clavate, 4-sterigmate, 30-40 x 8-10 µm, with a basal clamp.
Basidiospores cylindric to narrowly ellipsoid, hyaline, thin-walled, smooth, negative in Melzer's reagent, 9-11 x 4.5-5 µm.
Type of rot. Intense brown rot in dead conifers.
Cultural characteristics and sexuality. Unknown.
Substrata. Almost exclusively on Pinus. but in Portugal found also on Cupressus.
Distribution. Seems to follow Pinus sylvestris everywhere in Europe except the northern part of Fennoscandia. Its eastern limit in Russia is unknown, but it seems to be a distinct European species.
 
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