504 PTERIDOSPERMS, ETC. [CH 



consisting of a central axis "joined to an outer rind by a series 

 of radial septa," the spaces between the septa being divided 



Fig. 339. Glossopteris fronds attached to rhizome. (From a specimen lent by 

 Dr Mohlengraaff. Considerably reduced.) 



into chambers by transverse partitions. His view is that the 

 rhizome of Glossopteris was a cylindrical organ and not an 



