Search on : Taxa descriptions


Page number:189 
Remarks (public):Ceriporia spissa is one of the most beautiful polypores and its bright orange basidiocarps are very distinctive in the field. 
Description type:Non-original description 
Description:Ceriporia spissa (Schw.:Fr.) Rajch. - Mycotaxon 17:276. 1983. - Polyporus spissus Schw.:Fr.. Elench. Fung. p. 111. 1828. Basidiocarps annual, becoming widely effused: pore surface orange when fresh, darkening to reddish brown on drying. pores 7-9 per mm: margin usually sterile, fruiting areas often patchy over a large area of sterile mycelium. sterile area pinkish buff. minutely tomentose; subiculum pinkish buff. soft, less than 1 mm thick: tube layer cheesy in consistency, orange when fresh and dark reddish brown on drying, up to 1 mm thick, sections giving off a white oily exudate in KOH.
Hyphal system monomitic; subicular hyphae hyaline. thin-walled. simple-septate, with frequent branching. 2-3.5 µm in diam. some partially encrusted with an amorphous, yellowish gummy material; tramal hyphae similar but parallel, very compactly arranged and difficult to separate. moderately thick-walled.
Cystidia and other sterile hymenial elements lacking.
Basidia clavate, 4-sterigmate. 12-24 x 5-6 µm, some appearing refractive in KOH and not staining in phloxine, simple-septate at the base.
Basidiospores allantoid, hyaline, smooth, negative in Melzer's reagent, 4-6 x 1.5-2 µm. Type of rot. White rot of dead conifers and hardwoods, negative in gum guaiac solution. Cultural characteristics. See Nobles 1958; Rajchenberg 1983.
Substrata. Dead hardwoods, in Europe on unknown host. In North America on many genera of hardwoods and conifers.
Distribution. In Europe known only from the Canary Islands (Spain). Widely distributed in North America and recorded from Japan.
Taxon name: