98 



LEAF-ARCHITECTURE OF FERNS 



[CH. 



Fig. 94. Examples of nervation in leaves of Ferns. j—Ncrvatio Cyrtophlebii (part of leaf of 

 PolypodhiJii caespilosiDii). Nat. size; k = Nervatio Marginariaei^^zi o{ Polypodiuni serpens). Nat. 

 size; l=Nervatio Doodyae (part of segment of Woodwardia radicans). Nat. size; ni = Nervatio 

 Sageniae (part of segment of Oiioclea sensibilis). Nat. size ; n = Nervatio Anaxeti (small part of leaf 

 of Polypodiuni crassifolimii). Nat. size; 0- Nervatio Drynariae (part of segment of Poly podium 

 quercifoliuni) . Nat. size. (After Luerssen.) 



