THE CARBONIFEROUS AND PERMIAN FLORAS. 495 



fen's, Neuropteris, Sphenopteris, and Pecopteris. There are also 

 Tree-ferns referable to the genus Psaronius. The singular 



Fig. 390. Nceggerathia expcmsa. Permian. 



genus Nceggerathia (fig. 390) is also represented in the Permian 

 Rocks. 



Fig. 391. Walchia piniformis ; a Branch ; b Twig. From the Permian of Saxony. 

 (After Gutbier.) 



The Conifers of the Permian period are numerous, and 



