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CYSTOPTERIS REGIA. 



The Koyal or Alpine Bladder Fern is a very handsome 

 dwarf indigenous species. 



A deciduous hardy Fern, growing on walls. 



Only found at Low Leyton, in Essex. 



Native of Switzerland — on the Alps, in the Pyrenees — on 

 Mount Taygetos and Mount Taurus. 



Introduced into the Eoyal Gardens, Kew, in 1793. 



The fronds, which are herbaceous, are lanceolate, sub-tribi- 

 pinnate, smooth, and erect; pinnae ovate and unequal; pinnules 

 ovate and profoundly pinnatifid, with linear-oblong lobes. 

 . Veins branching. 



Stipes one-third the length of the frond. Rachis winged 

 above. 



Fructification covering the back of the frond. 



Sori numerous, small, circular, medial, and indusiate. 



E-hizoma brief, spreading, tufted, and perennial. 



Length of frond from three to eight inches; colour pale 

 green. 



For plants and fronds my thanks are due to Mr. Joseph 

 Sidebotham, of Manchester. 



The illustration is from Mr. Sidebotham's fronds. 



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