248 



NATURE-STUDY REVIEW [16:6— Sept., 1920 



The Boulder or Hay-Scented Fern. Dicksonia 



This delicate fern makes beautiful rocky pastures and hillsides, 

 especially in New England. Its delicate pale 

 green fronds are of elaborate pattern and measure 

 from one to three feet in height. It grows in 

 shade often but likes sunny locations and often 

 occurs in large patches. Its spore cases are borne 

 on a recurved pinnule in a very delicate cup and 

 are verv small. 



The Bladder Ferns. Cystopteris 



"Delicate rock ferns" would be a better name 

 for these fragile, exquisite plants which drape 

 themselves like green lace over the damp shady 

 rocks in ravines and along lakeside cliffs. The 

 spore cases when young are protected by an indusium shaped like 

 a little cup but this tiny cuplet is only seen early in the season for it 

 withers soon leaving the fruit dots naked. Almost every frond 

 bears fruit. 



Photo by Verne Morton 

 The bulb-bearing bladder fern. This beautiful fern clothes the banks of 

 damp ravines. It has, in addition to fruiting organs, buds on 

 the stem which take root. 



