POLYPODIUM. 
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lobes are more or less regularly two-cleft at the apex; 
serratum, in which they are deeply saw-edged; crenatum, in 
which the margin has rounded notches, and is wavy ; and 
acutum, in which they are drawn out to a long narrow 
point. The varieties are fully enumerated in our Hand- 
book of British Ferns."" 
The species and its varieties grow readily under cultiva- 
tion, either planted in pots, or on rockwork in a shady 
situation. They should have a light, open soil. 
The name of Ctenopteris vulgaris has been proposed for 
this plant ; but as it is the type of Polypodium, such a 
change of name would be quite inadmissible. 
Polypodium Phegopteris, Linnceus, 
The Beech Fern, or Mountain Polypody, (Plate II. fig. 2.) 
This is a somewhat fragile plant, enduring no longer 
than till autumn, or the appearance of the first frosts. It 
grows wild in moist mountainous situations and in damp 
woods, often common enough where present, but rather 
limited in its range ; occurring, however, in England to the 
southward, westward, and northward ; pretty generally 
distributed in Scotland ; but rarely met with in Ireland. 
This species has a slender but extensively creeping and 
