412 



The Ohio Naturaiid. 



[Vol. XV, No. 3, 



Others are named in the list given below of "Northeastern and 

 northern plants having a north-eastern distribution in Ohio." 



II. The Eastern Division of the non-glaciated Alleghany 

 Plateau extends eastward from an undetermined transition line 

 west of the Muskingum valley. This area apparently lacks the 

 white pine and tamarack present to the north and also the pitch 



OHIO 



MAPJI. 



Pr(.)visiunal Phylogeographic Areas of (3hio. 



pine and sorrel tree of the rougher highland to the west. The 

 scrub pine is also apparently absent except on the western edge. 

 Isolated localities have Juniperus virginiana and Tsuga canadensis. 

 III. The Western Division of the non-glaciated Alleghany 

 Plateau included in this area has its western Iwundary following 

 closely the eastern limit of the Ohio Shale in southern Ohio and 

 the terminal glacial moraine. It is a rugged hilly upland cut by 



