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Page number:158 
Remarks (internal):The dark, strigose to hispid, pileate basidiocarp covered on the lower side with long (up to 6 mm), acute, dark spines, and growth on angiospermous wood is usually sufficient to recognize this species. In addition to the distinguishing features presented in the key, G. strigosus differs from G. nigrescens in forming longer gloeocystidia and basidia. For further information on G. strigosus, refer to the recent redescription by Jahn & Sturm (1983) based on European material. 
Description type:Non-original description 
Description:Gloiodon strigosus (Sw. : Fr.) P. Karst., Meddeland. Soc. Fauna Fl. Fenn. 5: 28. 1879.
Hydnum strigosus Sw.: Fr., Syst. Mycol. 1: 414. 1821.
Basidiomes annual, pileate, effused-reflexed, up to 20 mm wide and 50 mm long and to 10 mm thick; upper surface dark brown to almost black, strigose to hispid; lower side strongly hydnoid, concolorous with upper surface or light brown when sporulating; individual spines conical, up to 6 mm long; context a strongly inter-twined mass of strands or cordons, dark brown to black. Hyphal system monomitic; generative hyphae with clamps, hyaline, and thin-walled, highly branched and dominating in the subhymenium, 2.5-3.5 µm wide, sclerified dark coloured generative hyphae abundant simulating skeletal hyphae, but with scattered clamps and spaced branching, the strands or hairs on the pileus consist of such hyphae, dark coloured and up to 6 µm wide, inner part of the hairs similar but with hyaline hyphae, spines covered by a hymenium arising from a subhymenium of hyaline generative hyphae while the core consist of thick-walled, pigmented sclerified hyphae, those of the spine apex with numerous adventitious septa, all hyphae negative in Melzer's reagent. Gloeocystidia abundant, smooth, tubular and often irregular with slight constrictions, up to 120 µm long. Basidia clavate, 4-sterigmata, 30-40 x 4-6 µm, with a basal clamp. Basidiospores subglobose, hyaline, finely ornamented, strongly amyloid in Melzer's reagent, 4-5.5 x 3.5-4 µm.
Substrate. - On dead hardwoods, rarely on conifers. Distribution. - Widespread but rare in Europe. Not known from Great Britain.

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