U\ 
252 
THE FERN WORLD 
Fig. i 
3 
*4 
INDEX TO PLATE 7. 
Common Polypody (upper side of frond) 
[Poly podium vulgare ] 
. Common Polypody (under side of frond showing the 
fructification) 
. Mountain Polypody 
\_Polypodittm phegopteris ] 
. Three-branched Polypody 
\Polypodium dryop/eris ] 
Limestone Polypody 
[Polypodium caharenm ] 
