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Page number:117 
Remarks (public):The strong to moderate amyloid reaction of the hyphae, especially the skeletal ones, is normally sufficient for a determination of this species. 
Description type:Non-original description 
Description:Antrodia carbonica (Overh.) Ryv. & Gilbn. Fig. 37
Mycotaxon 19:139, 1984. - Poria carbonica Overh., Can. J. Res. 21(C):232, 1943. Basidiocarps annual to occasionally perennial. resupinate. widely effused, tough and corky. adnate. up to 12 mm thick, taste weakly bitter. margin usually determinate, white. weathering pale brown; pore surface white to cream, pores circular to angular. 3-5 per mm; context cottony to fibrous. white and thin, tissue instantly blue-black where touched with Melzer's reagent; tube layers white, up to 10 mm deep.
Hyphal system trimitic; generative hyphae thin-walled, with clamps, 3-4 µm in diam. partly straight to sinuous; skeletal hyphae thick-walled. non-septate. rarely branched, 5-8 µm in diam; binding hyphae thick-walled. non-septate. much branched. 2-4 µm in diam; all hyphae strongly to moderately amyloid in Melzer's reagent; there are even transitions from branched to unbranched and no distinct separation as in the trimitic trametoid fungi.
Cystidia or other sterile hymenial elements absent.
Basidia clavate, 4-sterigmate, 20-25 x 5-7 µm; with a basal clamp.
Basidiospores allantoid to cylindrical. hyaline, smooth, negative in Melzer's reagent, 5-6.5 x 2-3 µm.
Type of rot. Causes a brown cubical rot in dead conifers: important in decay of mine timbers and utility poles.
Cultural characteristics. See Nobles 1943. 1948, 1958, 1965; Lombard and Gilbertson 1965; Stalpers 1978.
Sexuality. Unknown.
Substrata. On dead conifer wood.
Distribution. Not known from Europe but reported from Morocco (Malencon 1956:301) and may ultimately also be found in Europe. Known from the Himalayas, Japan and western North America from Guatemala to British Columbia.
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