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 Add this item to the list  PHELLINUS GLAUCESCENS (Petch) Ryv.
Page number:169 
Description type:Non-original description 
Description:PHELLINUS GLAUCESCENS (Petch) Ryv.
Norw. J. bot. 19:234, 1972. - Poria glaucescens Petch Ann. Roy. Bot. Gard. Peradeniya 6:139, 1916 (K:).
FRUITBODY resupinate, effused, adnate, up to 10 mm thick, woody hard, margin narrow, rusty brown, velutinate (lens'). PORE SURFACE fulvous to reddish-brown, sometimes with a glaucous shade especially when turned in incident light, pores small and entire, 6-8 per mm, tubes concolorous or dark cinnamon, up to 3 mm deep, indistinctly stratified. SUBICULUM less than 1 mm thick, reddish to fulvous brown.
HYPHAL SYSTEM dimitic, generative hyphae hyaline to pale yellow simple septate, up to 4 µm wide, skeletal hyphae golden-yellow to pale rusty brown some with rather wide lumen, in the subiculum sub-solid, 3-5 µm wide. SETAE scattered to frequent, straight, acuminate to slightly ventricose, 18-30 x 6-11 µm. SPORES sub-globose to ellipsoid, 3.54.5 x 3-4 µm, hyaline to pale yellowish with age and then with slightly thickened walls.
HABITAT. On deciduous wood. DISTRIBUTION. Widespread in Africa and in east Africa we have specimens from Ethiopia to Malwai. In Asia we have seen collections from Sri Lanka and Malaysia.
REMARKS. This is a somewhat confusing species. The characteristic all collections share are the reddish-brown to umber pore surface with very small pores, the resupinate fruitbody and spores being hyaline to pale yellow and ellipsoid, 3.5-4.5(5) x 3-4 µm. The variable characteristic is the size of the setae. In the type they are predominantly in the range 18-28 µm and the width varies from 7-11. In some African collections (as in R. 11129, see fig. 53 e,d) they are slightly smaller and this collection has a black zone beneath the subiculum. This collection is fairly close to P. luctuosus with its small setae. In other African collections, the setae are longer (as in the type), but they are more slender, thus appearing more acute in preparations (R. 9174, see fig. 53 e,f) The spores are identical in all these collections. In another African collection a very few spores appeared rusty brown, a feature not seen in any other collection of this species. It may be that more material will shed some light on this problem. We have for the time being treated all these forms as belonging to one species and we expect that intermediate setal-shapes will be found.
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