Hill: Penobscot Plants, 285 



eastern coniferous forest. Tlie former is characteristic of the 

 AUeghanian region, the latter of the Canadian region. By 

 far the greater part of the forests of the eastern Penobscot 

 Bay region belong to the latter type, which attains its niaxi- 

 mnm development in eastern Canada. 



Canadian Elp:me>,'t 



Although two of the dominant trees of the Canadian forest, 

 Picea canadensis and Abies halsamea, together with several 

 of the associated species, are more strictly Hudsonian in na- 

 ture, since they extend north into Labrador, there are a much 

 larger number of characteristic species which answer the re- 

 quirements for C^anadian distribution. Among these may 

 be mentioned the following trees and shrubs : 



Taxus canadensis Popidus iremidoides 



Picea rubra Ilex verticillata 



Pinus resinosa Acer spicatum 



Betula alba, Cornus alterni folia 



var. papyrifcra DierviUa Lonicera 



Alnus incana Vibiwnuni ca.ssinoides 



Herbaceous forms characteristic of the Canadian Forest 

 include: 



Drijopferis cristafa Dalibarda repcns 



Li/copodium Jucidulum Oxalis americana (see Fig. 4) 



Streptopus roseus Viola incognita 



Ribes hirtellum Aralia nudicaulis 



The Canadian plants are not restricted to the woodlands, 

 however, but occur in every possible habitat. Only a fW 

 of the more common species can be mentioned in this 

 connection. 



