?6( POLYPOREAE OF SOUTH AFRICA. 



13. Polyporus hirsutulus, Schw. 



Pileus thin, sessile, coriaceous, imbricate 3 cm. to 5 cm. by 

 2 cm. by 01 cm. to 0-2 cm.; surface greyish to ashy, zoned with a 

 few coloured zones, hirsute to hispid, context white, thin, tubes 

 less than 1 mm. long, white within; mouths subrotund to angular, 

 4 to 5 to the mm. ; edges thin, entire, white to yellowish, glistening. 

 Distribution . — Recorded by T. R. Sim at Pietermaritzburg. 

 Natal (in National Herb. Division Botany, Pretoria). 



Close to P. versicolor from which it differs in being paler and 

 with more hirsute or hispid pubescence and less distinct zones. 



14. Polyporus zonatus, Pries. 



Pileus sessile or effused reflexed, coriaceous, applanate, 

 dimidiate to orbiculate, often attenuated at attachment (spuriously 

 stipitate) ; 1-5 cm. to 5-5 cm. by 2 cm. to 8 cm. by 01 to 0-4 cm. ; 

 surface marked with coloured zones as in P. versicolor, velvety to 

 sub-villous, context white, azonate, fibrous, 1 mm. to 2 mm. thick; 

 tubes white to yellowish 1-5 mm. to 2 mm.; edges long; mouths 

 circular to angular 2 to 4 to the mm., edges white to yellowish, 

 thin, becoming somewhat lacerate; hyphae 4-6/x to 8/x. 



Distribution. — Very common on dead logs throughout the 

 Union. 



This fungus is very similar to P. versicolor, and only differs 

 from it in thicker context, larger pore-mouths, and surface usually 

 not as villous as the first-named. 



15. Polyporus ve/utinus, Pries. 



Plants annual, sessile or reduced at attachment; pileus 

 dimidiate, coriaceous-corky to firm, 0-5 cm. to 3 cm. by 015 cm. to 

 4 cm. by 05 cm. to 0-2 cm. ; surface radially zoned to furrowed, 

 villous-hirtose tomentose to finely tomentose and subglabrous, 

 white to yellowish; context 1 mm. to 1-5 mm. thick, white to pallid, 

 fibrous; margin thin and at times incurved in drying; tubes less 

 than 1 mm. long, white to discoloured within; mouths subrotund 

 to angular 3 to 6 to the mm. ; edges thin, entire to lacerate, white 

 to umber; hyphae hyaline, 3-6/a to 8/j,. 



Polyporus velutinus is close to P. pubescens from which it 

 differs in being thinner and having shorter tubes. 



16. Polyporus hirsutus (Wulf), Pries. 



Pileus dimidiate, imbricate, sessile, somewhat decurrent at 

 point of attachment or effused reflexed and sub-resupinate # flexible 

 when fresh, leathery and corky in dried material, 2 cm. to 10 cm. 

 by 2-5 cm. by 0-3 cm. to 1-3 cm. ; surface conspicuously hirsute, 

 usually concentrically sulcate and zoned, greyish, yellowish or 

 brownish; context white, 2 mm. to 6 mm., fibrous, soft corky; 

 tubes 1 mm. to 3 mm. long, white to yellowish; mouths 3 to 4 to 

 the mm.; circular to somewhat angular; edges thick, entire, white 

 to yellowish; hyphae 0-4/x to 7-4/x diam. 



Distribution. — On dead wood, not uncommon. Geo. Thorn- 

 croft, Barberton, Transvaal; J. W. Bews, Pietermaritzburg, 

 Natal; W. J. van der Merwe, Eastern Cape Forest Conservancy. 



