Plate 59. 
CYSTOPTEEIS FRAGILIS. 
Class, FiLiCES : — Ferns, no true flowers. 
Genus, Cystopteris :— Fronds divided 2 or 3 times, thin in texture, 
flat. Sori round, placed on back of the veins. Indusium mem- 
braneous, covering sorus like a hood. 
Cystopteris fragilis, Bemh. Plant 4-12 in. high. 
Rhizome short. Frond 4-8 in. long, narrowly ovate, 3 times 
divided, segments toothed, largest leaflets 1-1^ in. long, in. 
broad, soft in texture. Sori 2-12 to a segment. 
Sheltered places among rocks and large stones. 
West Falklands. 
Description of plate :— 1, fronds ; 2, portion of frond ; 3, sorus ; 
4, sporangium dehiscing. All except 1 enlarged. 
