GENERAL KEY TO THE FAMILIES 



DIVISION I. PTERIDOPHYTA. 



(FERNS AND FERN ALLIES) 



Fern-like, rush-like, moss-like or aquatic plants, without true 

 flowers. Reproduction by spores. 



ORDER I. FILICALES 

 I. POLYPODIACE^. FERN FAMILY 



Leafy plants with creeping rhizomes. Spores borne in sporangia 

 collected in dots, lines or clusters on the backs or margins of the 

 fronds or their divisions. 



I. PHEGOPTERIS. (Presl.) Fee. 



1. P. polypodioides. Fee. Long Beech Fern. 



2. P. alpestris. (Hoppe.) Mett. Tufted Beech Fern. 



3. P. Dryopteris. (L.) Fee. Oak Fern. 

 II. ADIANTUM. (Tourn.) L. 



i. A. pedatum. L. Maidenhair. 



III. PTERIS. L. 



i. P. aquilina var. lanuginosa. Bong. Common Bracken. 



IV. CHEILANTHES. Sw. 



i. C. Feei. Moore. Slender Lip Fern. 

 V. PELL^A. Link. 



i. P. atropurpurea. (L.) Link. Purple Cliff Brake. 

 VI. CRYPTOGRAMMA. R. Br. 



1. C. acrostichoides. R. Br. Nootka Rock Brake. 



2. C. Stelleri. (Gmel.) Prantl. Slender Rock Brake. 



VII. ASPLENIUM. L. 



1. A. viride. Huds. Green Spleenwort. 



2. A. cyclosorum. Rupr. Large Lady Fern. 



VIII. POLYSTICHUM. Roth. 



i. P. Lonchitis. (L.) Roth. Holly Fern. 



i 



