336 ECONOMIC BOTANY OF ALABAMA 



Cephalanthus 



Sambucus 



The following occur in the plateau region (2A), and most of 

 them also farther north or south, but they are rare or absent in the 

 Tennessee Valley, which although farther north is lower and pre- 

 sumably warmer, in summer at least. Those which extend into 

 the state of Tennessee or beyond are indicated by the same sign 

 as before, and their absence from the valley may be due in most 

 cases to the fact that they do not thrive in rich soil. 



Pinus palustris 



Tsuga (x) 



Smilax laurifolia 



Myrica Carolinensis 



Betula lenta (x) 



Castanea pumila (x) 



Nestronia 



Magnolia (several species) 



Asimina parviflora 



Xanthorrhiza (x) 



Calycanthus 



Aronia 



Toxicodendron pinnatum (x) 



Toxicodendron quercifolium 



Aesculus parviflora 



Vitis rotundifolia 



Stewartia (both species) 



Ascyrum stans 



Aralia spinosa (x) 



Nyssa biflora 



Azalea arborescens (x) 



Rhododendron Catawbiense 



Cholisma ligustrina (x) 



Gaylussacia dumosa 



Vaccinium virgatum 



Vaccinium vacillans (x) 



Vaccinium corymbosum (x) 



Sty rax Americana 



Chionanthus 



Gelsemium 



