CYSTOl'TKHIS 1'K.\(;1I,IS. 



429 



Truncata-intekkupta, LoH-e. (Fig. 843.) — A rcniarkaLlo 

 variety, with short pinnules, very various in form and size, 

 some depauperate and others wanting-. Truncate. 





f 



\' 



4a^ 



A.V 



Fig. 844.— Basal pinnte. 



Adiantoides, Lowe. (Fig. 844.) — A hirge much-divided 

 luxuriant-growing variety, found in Scotland. 



Fig. 845.— Batal pinna'. 



Gracile, Lowe. (Fig. 845.) — A slender, large form. Length 

 thirteen inches, width three inches and a half in the centre of 

 the frond. PinucC sub-opposite in the lower half of the frond, 

 and alternate above. Pinna) and pinnules distant, the basal 

 three pairs of pinnae very distant; the apices of tlie })inna3 

 dentate-caudate. 



DiCKiEANA, Moore. (Plate LX^^) — Found in a cave at 



