436 CYSTOPTERIS llEGIA. 



An exceedingiy interesting nncommon British sijecies. 



Fronds subtripinnate. Length three to eight inches. Colour 

 pale green. Erect in habit, and lanceolate in form. 



Pinna? unequal, ovate, and acute. 



Pinnules profoundly pinnatifid, ovate, lobes more or less 

 linear, and obscurely dentate. 



Caudex brief and tufted. 



Stipes variable in length, and slender. 



Veins branched. 



Sori abundant^ crowded, circular, small, and medial. 



Indusiuni thin, transparent, and reflexed. Deciduous. 



Found some seventy years ago in great abundance on a wall 

 at Low Leyton, in Essex, but now rare. 



Abroad it is found abundantly in the Alps; also a native of 

 Sweden, France, Italy, Spain, Belgium, Greece, Hungary, 

 Dalmatia, Croatia, Transylvania, and in Asia Minor. 



Easily cultivated, if well drained and grown in a mixture 

 of light loam, turfy peat, and sand. 



There arc no varieties. 



