180 AMONG THE WILD FLOWERS. 
from the mid-rib to the margin; Blechnum, 
Hard-fern, has two kinds of frond, the fertile 
ones rising from the centre, with narrow linear 
pinne, and the thece in a continuous row at 
the back of them ; Osmunda, King’s-fern, often 
called Flowering Fern, has the spore-cases col- 
lected together in a spiked panicle at the end 
of the fertile fronds, which fact has procured for 
it this very inappropriate name; /erzs, the 
Brake-fern, has its fruit in a continuous line 
under the margin; our species is Plerzs aguzlina, 
Eagle-fern, the name recalling the fact that if 
the rachis be cut obliquely, the section shows 
the figure of the Imperial eagle. 
All the species of Polypodium have the sori 
naked, z.e., destitute of the covering indusium ; 
Athyrium filix-feemina, Lady-fern, a much 
varying kind, has kidney-shaped clusters and 
indusia; Cryptogramme crispa, Rock-brake, or 
Parsley-fern, known also as AWosurus crispus, 
has distinct fertile fronds, containing clusters 
of fruit without indusium, but covered by the 
reflexed margin; Lotrychium Lunarza, Moon- 
wort, has pinnules of a crescent shape, and the 
clusters of spore-cases are produced in a lateral 
panicle, like an erect bunch of grapes; Cys- 
