( 20 ) 
Height. From four to nine inches. 
Colour. Rather light green. 
Habitats. Mountainous districts in Scotland. Ex¬ 
tremely rare. 
GROUP I; GENUS VII; SPECIES III. 
CYSTOPTERIS REGIA. (Alpine Bladder Fern.) 
Plate IX. 
Fronds. Lanceolate, bi-pinnate. Pinnae triangular or 
ovate. Pinnules fan-shaped, deeply lobed; 
margins occasionally notched. Rachis and 
stipes green, the latter short. 
Growth. Rather spreading; the fronds frequently 
reflexed. 
Height. From two to three inches. 
Colour. Bright green. 
Habitats. Essex, Derbyshire, and Yorkshire; ex¬ 
tremely rare. 
(See also page 53J 
-><x- 
