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Description type:Original description 
Description:Schizopora roseo-tingens Hjortst. & Ryv. spec. nov. Fig. 4 & 5.
Holotypus: Nepal, Gandaki Prov. Kuldi, Annapurna trek. 2400 m. on deciduous wood, 1979-11-07. L. Ryvarden 18989 B (0) . Fruitbody resupinate, adnate, creamish to light brown or with rosy tint, distinctly odontioid to hydnoid with smooth and firm, about 0.1-0.?. mm thick, hymenium between the aculei, individual aculei more or less conical or subcylindrical, rarely flattened, smooth or with a slightly fimbriate apex, mostly 0.5-1 mm long. Subiculum 0.3-0.5 mm thick, light rosy brown, fairly dense and tough. Margin not especially differentiated but loosening and tend to be more or less reflexed. Hyphal system dimitic. Generative hyphae strongly branched, 3.5-4 µm wide, thin-walled, with clamps. Skeletal hyphae straight and rarely branched, thick-walled with fairly narrow, 1-1.5 µm wide lumen, without clamps or such seen only in transition stage between generative and skeletal hyphae. The skeletals in the central part of the aculei intertwined, rarely parallel, indextrinoid, inamyloid or acyanophilous. Cystidia lacking but in the aculei with scattered capitate hyphal ends, seemingly originating from tramal hyphae, often encrusted apically with resinous substance. Basidia subclavate, more or less suburniform, 20-25 x 4.5-5 µm, with 4 sterigmata and basal clamp. Spores ellipsoid, thin-walled, 4-4.5 x 2-2.2 µm, inamyloid, acyanophilous, indextrinoid.
Remarks. The new species is placed in Schizopora on the basis of the conspicuous skeletal hyphae and similar basidia and spores. On the other hand, the thin-walled hyphae differ in the shape of the clamps and the irregularity of the walls. An alternative to Schizopora could be Fibrodontia but the hymenial structure deviates from that genus in its narrow sense (see below) . Schizopora roseo-tingens is well separated from other species by a strictly odontioid hymenium and pale rosy colour. Nevertheless, in both macroand microscopic features the species is intermediate between species of Hyphodontia, Fibrodontia and Schizopora. The latter genus comprises species with an obviously tough consistency, both porioid and such with a more irpicoid or labyrinthine hymenium, whereas Fibrodontia sens. str. (limited to the type species) is fairly soft, somewhat fibrous and typically odontioid. Both genera are generally accepted and described as dimitic. Species of Hyphodontia are monomitic, even if some species have large cystidia of subicular origin (pseudocystidia) seemingly like those of Fibrodontia but with fairly wide lumen. At present we prefer to include the new species within Schizopora rather than to extend Fibrodontia until a better knowledge of both the morphology and cultural tests can be acertained for these genera.
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