A. acrostichoides Sw. Silvery Spleenwort. Common in rich, 

 moist shades. Fronds two feet or more high, pinnate, the 

 pinna? pinnatifid; fruit borne on the back of the fronds, in a 

 double row on each pinnule, silvery white when young. (A. 

 thelypteroides Michx. ) 



A. Filix=foemina (L. ) Bernh. Lady Fern. Abundant along 

 roadsides, in thickets and in open woods. Well known. Quite 

 variable in the form of the fronds. Fruit dots at first curved, 

 at length straight, brown or blackish when ripe. It is usually 

 a difficult matter to find a perfect frond of this species. 



CAMPTOSORUS Link. 



C. rhizophy litis (L. ) Link. Walking Fern. Walking Leaf. 

 Rare. Found only in a few restricted areas in our region. 

 Lockwood, N. Y. ; scarce, Barbour. On rocks west of Barton; 

 rare, Fcuno. On sandstone rocks in various places about Sus- 

 quehanna, Graves. South Oxford and on sandstone rocks in 

 several places about Oxford. Coville. Fronds gradually nar- 

 rowing from a heart-shaped base, into a long, narrow tip, which 

 bends over and rooting at the apex, gives the common name to 

 the fern. Fruit dots much like Asplenium. This is another 

 lover of limestone that is found on shale or sandstone in our 

 locality. Easily cultivated in the rockery. 



PHEGOPTERIS Fee. 



P. Phegopterls (L. ) Underw. Beech Fern. Common on wet 

 rocks in sun or shade. Frond triangular in outline, longer than 

 broad, bi- pinnatifid, the lowest pair of pinnee standing forward. 

 Fruit dots small, round, without indusium. This species par- 

 ticularly loves the wet soil at the base of cliffs, but will grow in 

 almost any soil. An elegant species for the fern garden. (P. 

 polypodioides Fee. ) 



P. hexagonoptera (Michx.) Fee. Six- Angled Polypody. Broad 

 Beech Fern. Tolerably common in rather dry, rich woods. In 

 appearance much like the preceding, except that the fronds are 

 broader than long, the lowermost pair of pinna; much larger, 

 their pinnules pinnatifid. This may be distinguished from the 

 preceding by the odor of the bruised foliage. It is commonest 

 in deep shade, but seldom occurs in coniferous woods. 



