330 ECONOMIC BOTANY OF ALABAMA 



Ouercus l)orealis maxima 



Ouercus coccinea 



Ulmus Americana 



Aristolochia tomentosa 



Alagnolia acuminata 



Magnolia tripetala 



Xanthorrhiza 



Benzoin aestivale (x) 



Philadelphus 



Hydrangea arborescens (x) 



Malus angusti folia (x) 



Crataegus spathulata 



Prunus Americana (x) 



Ptelea (x) 



Rhus glabra (x) 



Acer leucoderme 



Acer Negundo (x) 



Aesculus parviflora 



Dirca (x) 



Cornus alterni folia 



Polycodium stamineum 



Vaccinium vacillans 



Halesia Carolina (x) 



Fraxinus Americana (x) 



\'iburnum aceri folium 



The following seem to get into the pine-barren regions (12 

 and 13) only along the larger streams which rise farther inland. 

 Those marked (x) occur also in Florida, chiefly in calcareous soils, 

 and their southern limits are probably determined by soil rather 

 than climate. 



Pinus echinata (x) 



Arundinaria macrosperma 



Fagus (x) 



Ostrya (x) 



Populus deltoides 



Ouercus lyrata (x) 



Quercus Phellos (x) 



Ulmus alata 



Morus rubra (x) 



