

FIGS. 274-282: Fig. 274. Beech fern, Phegopteris polypodioides; Fig. 275. 

 Maiden-hair fern, Adiantum pedatum, portion of frond; Fig. 276. Wood spleen- 

 wort, Asplenium acrostichoides; Fig*. 277. Pale wood fern, Aspidium novaboracenses 

 Fig. 278. Christmas fern, Polystichium acrostichoides; Fig. 279. Lady fern, 

 Aspleniumfelix-femina; Fig. 280. Margined fern, Aspidium mar ginale; Fig. 281. 

 Florists' fern, A. spinulosum; Fig. 282. Ostrich fern, Onoclea struthiopteris. 



