SPORES HYALINE. 



POLYPORUS PRUINATUS (Fig. 676). Same as Polyporus anebus excepting 

 the surface is not smooth, but rugulose. We think it is not well designated as prui- 

 nose. We have never noticed this rough form to have the red stain that marks the 

 preceding plant. The original collection was from Mauritius, and all my specimens 

 are of African origin. 



SPECIMENS. South Africa, W. T. Saxton; Madagascar, Henri Perrier de la Bathie (five col- 

 lections) . Some of the latter are typical, some much thinner than the type. 



POLYPORUS RUGOSO-SPORUS. Pileus sessile, imbricate, 

 thin, rigid. Surface hard, slightly rough, light brown, with deeper 

 brown stains. Flesh light yellowish brown, firm, dry, hard. Pores 

 small, 5-6 mm. long, darker brown than the context. Spores cylin- 

 drical, 4x 12 mic., straight, hyaline, distinctly rough. 



This is a single collection from Congo Beige, collected by Edouard 

 Luja. In its macroscopic characters it closely approaches Polyporus 

 anebus. The spores are different and unusual. 



Fig. 676. 



Polyporus pruinatus. 



Fig. 677. 



Polyporus Zebra. 



POLYPORUS ZEBRA (Fig. 677). Pileus dimidiate, applanate 

 (5 x 7 x 1-1 y 2 cm.) Surface smooth, greyish brown, strongly marked 

 with narrow, concentric, raised zones. Flesh thin, 3-4 mic., isabelline, 

 with a faintly olivaceous tint, hard, firm. Pores minute, round, 

 8-10 mm. long, with concolorous tissue. Spores not found, doubtless 

 hyaline. 



We collected this plant in Samoa ten years ago. It has been re- 

 ferred for us to Polyporus lignosus, Polyporus supinus, and Polyporus 

 hemileucus, three different species, in our opinion, and it is neither. 

 While the stripes of the pileus are not as different in color as those of 

 a zebra, they are as prominent, and conspicuous. 



SPECIMENS. Only the types, Samoa. 



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