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Page number:554 
Description type:Non-original description 
Trans. Br. Mycol. Soc. 73:18, 1979. - Polyporus epimiltinus Berk. & Br. J. Linn. Soc. 14:54, 1873 (K;). - Poria borbonica Pat. Journ. Bot. (Morot) 1890:198 (FH;).
FRUITBODY resupinate, adnate and widely effused, woody hard, up to 3 mm thick, distinctly delimited towards the wood which is distinctly coloured red in zones. PORE SURFACE bluish white, glaucous to light beige or violet, pores angular to round, 7-9 per mm, almost invisible to the naked eye, in more mature and thicker fruitbodies a few larger and somewhat elongated, on sloping substrates the pores become split in front and more irregular, margin lacking or very narrow, bluish white and mostly consisting of a thin web of hyphae, tubes up to 3 mm thick, whitish inside due to a cover of excreted crystals and old tubes stuffed with white mycelium seen in dry specimens.
HYPHAL SYSTEM dimitic, generative hyphae thin-walled, 1.5-2.5 µm in diameter with clamps at the septa, often difficult to find and apparently restricted to the thin hymenium along the tubes, skeletal hyphae, 2-4 µm in diameter, hyaline to golden yellow, weakly dextrinoid, solid to semisolid. CYSTIDIA none. BASIDIA clavate 10-15 µm long with 4 sterigmata, both terminal and pleurobasidial, but the latter only close to the pore mouths. SPORES hyaline, smooth, thinwalled and non-amyloid, broadly ellipsoid to sub-globose, 45(5.5) x 2.5-3 µm.
HABITAT. On angiosperms, often on very hard wood. DISTRIBUTION. Pantropical and in Africa known from Sierra Leone in West to Ethiopia in East and southwards to Malawi and will probably be recorded from all countries on the continents with rain-forest.
REMARKS. Antrodia Karst. is probably the closest relative. It has resupinate to semiresupinate fruitbodies and the same hyphal system, but the skeletal hyphae are nondextrinoid. Further, the fruitbodies in Antrodia are light-coloured and no species in the genus reddens the substratum as does Tinctoporellus epimiltinus.
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