( *7 ) 
the frond densely covered with chaffy, brown, 
imbricated scales which nearly conceal the 
sori. Stipes short, brown and scaly. The 
young fronds have a silvery white appearance 
on the back. 
Growth. Erect; rather straggling when old. 
Height. From two to six inches. 
Colour. Dull, rather dark green when mature. The 
young fronds lighter in colour. 
Habitats. Old walls and rocks. More common in 
the western maritime counties. 
-- 
GROUP I; GENUS VII. 
CYSTOPTERIS. 
Sori. Nearly circular. Indusium like a pointed hood 
attached by its broad base on the side of the 
sorus nearest the mid-rib of the frond. Its 
unattached margin is jagged. 
Venules. Free. 
F 
