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CLASS III. 

 ACOTYLEDONOUS OR FLOWERLESS PLANTS. 



SUB-CLASS I. FILICES. (FERN TRIBE.) 



ORDER CVIII. POLYPODIACE^E. (POLYPODIUM OR FERN 

 THIBE.) 



POLYPODIUM. (Polypody.} 



I. P. vulgare. L. (Common Polypody.) 

 Rocks, walls, trunks of trees. 6-9. 

 Hedge banks at Pinner ; Wood End. 



POLYSTICHUM. (Prickly Fern.} 



1. P. aculeatum. Newm. (Common Prickly Fern.) 

 Moist woods and hedge banks. 



Banks at Pinner, near the Station road. Moss Lane, 

 Pinner. (Flor. Midd.} 



2. P. angulare. Willd. (Angular-leaved Shield Fern.) 

 Woods and hedge banks. 7, 8. 



Lane leading from Pinner to Harrow Weald. (Edition i. ) 

 Headstone Lane, Pinner. 



