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 Add this item to the list  nonotus nodulosus (Fr.) P.Karsten
   
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Page number:90 
Remarks (internal):The species may be confused with I. radiatus which however has hooked to straight hymenial setae and where tramal setae are present close to the base of the tubes. Besides that this species occurs only rarely on Fagus. I. hastifer is also a related species occurring exclusively on Fagus. However, this species has long setal hyphae in the dissepiments or pore mouths and is more or less completely resupinate. 
Description type:Non-original description 
Description:nonotus nodulosus (Fr.) P.Karsten
Bidr. Känned. Finl. Nat. Folk 37:73, 1882. - Polyporus nodulosus Fr., Epicr. p. 474, 1838.
Basidiocarps annual, resupinate to nodulose-pileate with numerous spaced, small and rounded pilei on an effused part, individual pilei up to 2 cm wide and 2 cm thick, hoof-shaped to triquetrous in section, surface first soft tomentose, ochraceous to pale yellowish brown, later scrupose to warted by agglutinated hyphae and then dark brown, margin narrow to wide, yellowish, pore surface cinnamon to rusty brown when old, pores angular, 3-4 per mm, in decurrent parts more irregular, split to elongated, 1-2 per mm, when dry with a silvery shine when turned in incident light, tubes up to 5 mm deep, cinnamon in trama, pale inside the tubes, context hard, cinnamon to rusty brown, up to 1 cm thick at the base.
Hyphal system monomitic, generative hyphae hyaline to pale rusty brown, thin to slightly thick-walled, up to 8 µm wide in the tomentum, narrower in context and trama.
Setal hyphae absent.
Hymenial setae present, mostly close to the bottom of the tubes, always straight, rare to abundant, acute, 15-40 x 6-12 µm, mostly bent at the base or sometimes with an elongated base or foot.
Basidiospores ellipsoid to subglobose, hyaline to pale brown in old parts of the basidiocarp, 4.5-5 x 3.5-4 µm, weakly dextrinoid, but reaction often difficult to observe.
Substrata. On Fagus sylvatica.
Distribution. On its host from Spain to Southern Norway and eastward to Caucasus and Turkey, but rare.
 
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