98 
BRITISH FERNS. 
b> var. bifidum . Fronds forked. 
c. var. ocutum. Fronds forked and pointed. 
d. var. omnilacerum . Segments cut into sharp 
teeth. 
c. var. semilacerum . Pinnae of usual length, but 
only divided on the lower part of the frond. 
/. var. auritum - dent a t um . Pinnae eared. 
g. var. auritum . Pinnae eared and many of them 
forked. 
h . var. attenuatum . Fronds elongated; pinnae 
long and narrow. 
i. var. bifido-lobatum ,. All the pinnae forked. The 
lower ones eared at the base. 
j. var. coriaceo - b ifi dum . Fronds dwarf, erect, 
leathery, some of the segments forked. 
k. var. crenatum . Fronds tall, broad, notched at 
the margin of the segments, very thin in 
texture. 
l. var. cristatum . The pinnae crested at the 
points. 
m. var. dent a turn. Pinnae narrow, pointed, and 
toothed. 
n. var. denticulatum. Fronds broad, margin 
jagged. 
o. var. interruptum. Pinnae varying in length. 
p. var. marginatum . Pinnae jagged and some of 
them eared; fronds large. 
q. var. obtusum. Dwarf fronds and the pinnae 
blunted. 
r. var , pulcherrimum. Very large fronds ; pinnae 
deeply jagged in the lower parts. 
2. P. Phegopteris. Fronds pinnate; pinnae pinnatifid. 
3. P. Dryopteris. Fronds ternate, glossy. 
