THE FLORA OF MISSISSIPPI. 149 



jack (Quercus nigra), post oak (Q. stellata), and Spanish 

 oak {Q. falcata). 



Fairly representative of the growth in the western 

 parts of the region where the sih loam is the prevailing 

 type of soil, are the following: 



Quercus rubra, Quercus nigra (not common), 



Quercus velutina, Nyssa sylvatica (occasional), 



Quercus alba, Prunus Americanus, 



Carya tomentosa, Cornus florida, 



Carya alba, Pinus mitis (occasional), 



Ulmus Americanus, Pinus taeda (occasional), 



Quercus falcata, Prunus serotina. 

 Quercus stellata. 



Where the land has been cleared, farmed, and finally 

 thrown out to grow up again the trees that take possession 

 are chiefly: 



Pinus taeda, Liquidambar styraciflua, 



Diospyros Virginiana, Sassafras officinale. 



Later, black jack {Quercus nigra) enters, and a struggle 

 for the mastery begins between the pines and oak, the 

 oak finally getting the upperhand, when other oaks and 

 hardwoods gradually crowd in and finally supersede the 

 black jack in the supremacy. 



The typical upland forest of the more sandy eastern 

 parts of the region are the following: 

 Pinus mitis, Prunus Americanus, 



Pinus taeda, Rhus glabra, 



Quercus nigra, Ulmus alata, 



Quercus stellata, Sassafras officinale,. 



Quercus falcata, Cornus florida, 



Quercus velutina, Crataegus Crus-galli, 



Carya tomentosa, Liquidambar styraciflua, 



Carya alba, Quercus prinus. 



Castanea vesca. 



The shrubby undergrowth of the region is somewhat 

 typical, showing a decided xerophytic character, as seen 

 from the following list : 



