146 THE FLORA OF MISSISSIPPI. 



ward, the tree growth presents besides the forms above 

 enumerated (pines are rare), the following trees: 



Quercus rubra, Liquidamhar styraciflua, 



Quercus alba, Quercus phellos, 



Carya tomentosa, Quercus aquatica, 



Carya alba, Acer rubrum, 



Juglans nigra, Acer dasycarpum, 

 Juglans cinerea (near Ripley), Betula nigra, 



Liriodendron tulipifera, Fagus ferruginea, 



Robinia pseudacacia, Gleditschia triacanthos. 

 Magnolia macrophylla, 



Common shrubs on the upland slopes are: 



Corylus Americanus, Hydrangea quercifoUa, 



Lonicera japonica, Hydrangea arborescens. 



Lindera benzoin. 



On lowlands bordering streams are the following: 



Alnus serrulata, Salix nigra. 



Arundinaria tecta 



Characteristic early spring herbaceous forms are given 

 below. The herbaceous flora of summer and autumn has 

 not yet been investigated. Herbs of the open wooded 

 hill slopes are: 



Potentilla Canadensis, Euonymus Americanus, 



Houstonia patens, Asplenium ebeneuni, 



Viola cucullata, Claytonia Virginica, 



Ranunculus fascicularis, Erigenia bulbosa, 



Ranunculus abortivus, Corallorhisa odontorhiza, 



Trillium sessile, Sanguinaria Canadensis, 



Aspidium acrostichoides, Podophyllum peltatum. 

 Diosicorea villosa. 



Clinging to limestone bluffs were the following species: 



Saxifraga Virginiensis, Camptosorus rhizophyllus, 



Dentaria laciniata, Woodsia obtusa. 



Flatwoods Region. — This region, as the name implies, 

 presents a low-lying flat topography on the whole, though 



