Hill: Penohsrot Plants. 



277 



or less indiscriminately to apply to the flora of the northern 

 regions. This multiplicity of terms is a result of the diffi- 

 culty experienced in attempting to place these boreal plants, 



62^ 



vCanadiiit-Atleghanian 



FiGUKE 1. — (xraph showing the relative importance of the various 

 elements in the eastern Penobscot Bay iiora. 



especially those which extend to the Arctic C^ircle or farther 

 north, in any arbitrary category. Since very few of these 

 species have the same distribution, authors have been forced 



