GUIDE 



For the purpose of identification the ferns de- 

 scribed are arranged in six groups, according to their 

 manner of fruiting. 



GROUP I 



STERILE AND FERTILE FRONDS TOTALLY UNLIKE ; FERTILE 

 FRONDS NOT LEAF-LIKE IN APPEARANCE 



I. SENSITIVE FERN 



Onoclea sensibilis 



Sterile fronds usually large ; broadly triangular, deeply pinnatifid. 

 Fertile fronds much contracted, with berry-like pinnules. In wet 

 meadows. P. 54. 



2. OSTRICH FERN 



Onoclea Struthiopteris 



Large. Sterile fronds once-pinnate, pinnae pinnatifid. Fertile 

 fronds contracted, with necklace-like pinnas. Along streams and 

 in moist woods. P. 56. 



3. CINNAMON FERN 



Osmunda cinnamomea 



Large. Sterile fronds once-pinnate, pinnje pinnatifid. Fertile 

 fronds composed of cinnamon-brown fruit-clusters. In wet places. 

 P. 60. 



4. CURLY GRASS 



Schizaa pusilla 



Very small. Sterile fronds linear, grass-like. Fertile fronds 

 taller, with a terminal fruit-cluster. In pine barrens of New 

 Jersey. P. 63. 



IP 



