PRE-CARBONIFEROUS FLORAS. 



481 



Fig 380. Psilophyton prtnceps (Dawson). a 

 Rhizome ; b Stem ; c Termination of a branch ; 

 d Vernation ; e Fructification, all of the natural 

 size ; g Areole of rhizome enlarged ; h Restoration 

 of the plant, reduced. Devonian of Canada. 



2 H 



