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 Add this item to the list  POLYPORUS RETIRUGIS (Bres.) Ryv.
Page number:502 
Description type:Non-original description 
Description:POLYPORUS RETIRUGIS (Bres.) Ryv.
Comb. nov. Basionym: Trametes retirugis Bres. Ann. Inst. Bot. Roma 5:177, 1894 (S;).
FRUITBODY annual, dimidiate with a tapering, contracted base, semicircular to flabelliform, up to 13 cm wide and long, up to 4 mm thick, rather fragile when dry, probably fleshy when fresh. PILEUS glabrous, azonate, ochraceousdirty brown in the type, smooth to weakly veined with narrow striae or low ridges radially from the base, margin sharp and slightly deflexed in the type. PORE SURFACE of same colour as pileus, pores angular, quite thin-walled, 1-2 mm wide, tubes up to 3 mm long. CONTEXT ochraceous, 2 mm thick.
HYPHAL SYSTEM dimitic, generative hyphae with clamps, 24 µm wide, fruitbody dominated by dendroid binding hyphae, moderately branched in the lower part, more strongly so in the upper part, up to 5 µm, mostly solid, but in sections with a fairly wide lumen. SPORES abundant, ellipsoid, 14-20 x 6-8 µm, thin-walled and non-amyloid.
HABITAT and DISTRIBUTION. On deciduous wood, only known from the type locality at Let-Marefia, Scioa in Ethiopia.
REMARKS. This must be a very rare species as it is conspicuous and should have been collected more often if widespread and common. It is distinct because of the azonate pileus with radial veins, clearly separating it from P. udus and P. squamosus to which it is related. Further, it has larger spores than both these species. More collections are very desirable.
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