POLYPOREAE OF SOUTH AFRICA. 273 



3. Pileus Avoody; surface horny encrusted, hard, succes- 



sive pore-layers not separated by context tissue. 



F. hornodermus ■ 2 

 2. Tubes dull brick-red contrasting with white context. 



F. geotropus 3 



1. Context coloured; spores hyaline or coloured; setae absent 

 or present 



4. Context purple-brown, setae absent, spores hyaline. 



F. melamoporus 4 



4. Context yellow-brown or dark brown but not purple. 



5. Spores hyaline, setae present. 



6. Pileus thin, less than 2 cm., setae abundant, spores 



4/x to 6/x cliam. F. conchatus 5 



6. Pileus more than 2 cm. thick. 



7. Spores large, 7/x to 7-5/a diam.; setae scanty. 



F. robust us 6 



7. Spores 3/x to 4/x diam., setae scanty. F. robinsoniae 7 

 5. Spores coloured. Not truncate. 



8. Setae absent. 



9. Pileus thin, applanate, surface with raised concentric 



ridges, mouths 7 to 9 to the mm. F. pectinatus 8 



9. Pileus large, ungulate or applanate, surface more or 

 less rough and rimose; mouths 5 to 6 to the mm., 

 spores subglobose 4/x to 5tt diam. F. rimosus 9 



9. Pileus subresupinate, spores globose to elliptical, 3-7/x, 



to 5/x or 3-7/j, diam. F. McGregori 10 



8. Setae present. 

 10. Pileus applanate, surface closely sulcate with raised 

 ridges, velvety tomentose, pore mouths 8 to 9 to the 

 mm. F. senex 11 



10. Pileus applanate or ungulate; surface rimose and 



rough; pore mouths 5 to 7 to mm. F. yucatanensis 12 

 5. Spores coloured, truncate; setae absent. 



11. Mouths bright yellow. F. oroflavus 13 

 11. Mouths white. F. applanatus 14 



1. Forties connatus (Weinm) Gill. 



Pileus corky to woody, perennial, sessile, largely resupinate, 

 effused-reflexed or imbricate, 4 cm. to 8 cm. by 8 cm. to 16 cm. 

 by 1-5 cm. to 10 cm.; surface velvety tomentose to glabrous, not 

 encrusted, white becoming jrellowish or darker with age; context 

 soft corky, white; tubes in distinct strata, 1 to 3 mm. long each 

 season, and the successive strata separated from each other by a 

 layer of context tissue; mouths angular, 4 to 5 to the mm.; edges 

 entire white or yellowish, glistening, spores not found; hyphae 

 2-5/a to 4/i,. 



Distribution. — Found on live Curtisia faginea by J. D. Keet 

 in the Eastern Cape Forest Conservancy. 



