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Page number:281 
Description type:Non-original description 
Description:Dichostereum effuscatum (Cooke & Ellis) Boidin & Lanq., Mycotaxon 6(2): 284, 1977.
Bas.: Corticium effuscatum Cooke & Ellis, Grevillea 9(51): 103, 1881.
Basidiome resupinate, effused, adnate, membranaceous to crustaceous, hymenophore smooth, cream to ochraceous, margin indeterminate. Hyphal system dimitic, generative hyphae with clamps, thin-walled, 2-3 µm wide, dichohyphae present in the subiculum, thick-walled, branches about 1-3 µm wide, dextrinoid. Gloeocystidia sinuous cylindrical, somewhat irregular, usually obtuse, tubular, variable in size, up to 100 µm long and 8-12 µm wide, with distinct walls, and with granular contents, SA+. Basidia subclavate, sinuous, 30-40 x 5-7 µm, with 4 sterigamata, and a basal clamp. Basidiospores subglobose, 6-8 x 5-7 µm, warted with strongly amyloid warts, sligthly thick-walled, hyaline to yellowish brown.
Distribution in Europe: Germany, France, Macedonia, Greece, Netherlands, Sweden, Ukraine, and Russia. Uncommon species in all Europe. It is the first record in Italy, known from Basilicata Region.
Substratum: on Alnus.
Taxon name: