THE BUCKLER FERNS. 
395 
mountain streams. In the north, and in some 
other parts of Scotland, it often densely clothes 
the mountain-sides. It has a wide distribution 
throughout England, Wales, and Scotland; being, 
however, a species of some rarity in Ireland. 
Peaty soil will suit it well, mixed with a small 
proportion of sand and leaf-mould : and it may be 
grown in the Fern-garden, or in the house ; but 
wherever it is planted it must have shade and 
abundant moisture. 
7 . 
THE MARSH BUCKLER FERN. 
Lctstrea tJielypteris. 
Plate 6, Fig. 6. 
HE most delicate in texture and fragile 
in habit of all the Buckler Ferns is 
Lastrea thelyjoteris. As its common 
name indicates it grows in marshes, preferring 
those which are exceedingly boggy and wet, 
especially when the bog is immersed in the deepest 
