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GROUP I; GENUS XI. 
POLYPODIUM. 
Sori. In circular clusters growing from the extremi¬ 
ties or backs of the venules. Indusium 
entirely wanting. 
Venules. Free. 
GROUP I; GENUS XI; SPECIES I. 
POLY PODIUM ALPESTRE . (Alpine Polypody.) 
Plate XIV. 
Fronds. Broadly lanceolate, bi-pinnate. Pinna; 
linear-lanceolate, alternate, reaching nearly 
down to the crown. ' Pinnules oblong and 
lobed ; lobes serrated on the margin. Rachis 
and stipes green, the latter clothed at its base 
with pointed, brown scales. 
Growth. Fronds rising in a circle from the crown ; 
drooping when full grown. 
