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BRISTLE FERN. 167 
not complete until the November of the following 
year, and it takes another year to produce seeds: the 
fronds usually endure for many years. The woolly 
other ferns: they may be seen most abundantly on 
the young frond before it is unrolled, and found scat- 
tered here and there on the stalk after the frond has 
‘the dilated portions being slightly transparent. Inter- 
mixed with these bristles are others, much finer, 
shorter, and more transparent; and these, under a 
lens of sufficient power, are also found to exhibit 
- traces of joints: the woolly appearance of the rootlets 
is due io these minute bristles. The form of the 
fronds is between lanceolate and triangular, those 
from Glouin Caragh approaching the former, and 
from Killarney the latter form: they are pin- 
te, the pinne being alternate and pinnate, and 
pinuules deeply divided and pinnatifid: perhaps 
ould be more correct to describe the delicate but 
veins as thus divided, and to say that each 
. veins is furnished on each side with a semi- 
wing extending throughout its length: the 
d is composed of these winged veins, and 
extends also to the stalk, which is about 
