CHAPTER VI. 
THE POLYPODIES. 
Plate 2. 
HE 4 many-footed ’ Ferns — as the 
words of Greek origin, from which 
the generic name Polypodium is 
compounded, imply — form a pretty 
and interesting group, including in the British 
Islands five members, namely: — 1. The Common 
Polypody {Poly podium vulgar e). 2. The Moun- 
tain Polypody (Polypodium pliegopteris). 3. The 
Three-branched Polypody ( Polypodium dryo- 
pteris). 4. The Limestone Polypody (Polypodium 
calcar eum). And 5. The Alpine Polypody ( Poly - 
podium alpestre). The rhizomas of these Ferns — 
creeping and branching in various directions, 
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