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Page number:126 
Description type:Non-original description 
Description:Amyloxenasma allantosporum (Oberw.) Hjortstam & Ryvarden, Syn. Fung. (Oslo) 20: 34, 2005.
Bas.: Xenasmatella allantospora Oberw., Sydowia 19: 37, 1966.
Basidiome resupinate, thin, ceraceous to subgelatinosus, greyish to olivaceous, hymenophore smooth or slightly tuberculate. Hyphal system monomitic, hyphae with clamps, 1.5-2 µm wide, rather difficult to discern and some glued together, numerous crystals present in the subhymenium. Cystidia absent. Basidia shortly cylindrical, pleural, 8-10 x 3-5 µm, with 4-sterigmata and a basal clamp. Basidiospores slightly allantoid, 4.5-6 x 1.5-2.2 µm, smooth, thin-walled, amyloid.
Distribution in Europe: France, Germany, Belgium, United Kingdom, Russia, Portugal, Italy, Denmark, Sweden, Norway, Switzerland, Finland, Spain, and the Caucasus. Recorded few times in Italy, from Piemonte, Trentino Alto-Adige, Friuli Venezia-Giulia, Emilia-Romagna, Abruzzo and Sardegna Regions.
Substrata: on trunks of Picea abies, Pinus nigra, P. pinea and Abies alba.
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