xxv] 



ZYGOPTEREAE 



445 



bore pinnae laterally disposed, in some cases in one row and in 

 others in two rows on each side of the rachis. In a typical fern 

 frond, as represented by recent and most fossil species, branching 



Fia. 309. A. Diphlabis forensis. 



B. Botryopteris forensis. 



C, D. Corynepteris coralloides. 



E. Schizopterii (Etapteris) pinnata. 

 (A, B, after Benault; C, D, after Zeiller; E, after Eenault and Zeiller.) 



