THE FLORA OF MISSISSIPPI. 143 



trivialis, Ranunculus multijidus, Ambrosia artemisiae folia 

 Ambrosia trifida, Salvia lyrata, Rubus villosus. 



On the open prairie lands occur: 



Coreopsis lanceolata, Poly gala Boykinii, 



Bninella vulgaris, Sisyrinchium sp. 



Allium mutabile, Thaspium aureum, 



Scutellaria parvula, Coreopsis grandi flora, 



Ranunculus abortivus, Silene Virginica. 



More typically prairie species are the following, which 

 are characteristic: 



Silphium laciniatum, Cacalia tuberosa, 



Silphium terebinthinaceum, Hartmannia speciosa, 



Asclepias (several species), Petalostemon candidus, 



Asclepiodora viridis, Oenothera triloba. 



On the higher red loam soils an entirely different assem- 

 blage occurs. This soil is not so rich in plant food as the 

 black soils, lime especially being much less. These areas 

 support a rather dwarfish growth of trees of a few species, 

 chiefly oaks. The commonest are: 



Quercus stellata, Carya alba, 



Quercus nigra, Diospyros Virginiana, 



Quercus falcata, Finns mitis, 



Quercus vilutina, Primus serotina. 



Characteristic herbaceous species associated with these 

 are: 



Rosa humilis, Spigelia Marilandica, 



Baptisia leucantha, Plantago aristata. 



Phlox pilosa, Verbascum Blattaria, 



Tradescantia Virginica, Verbena hastata, 



Psoralea melilotoides , Oenothera sinuata, 



Tephrosia Virginiana, Apocynum cannabinum. 



The red sandy hills found occasionally in the prairie 

 region present still another assemblage of plants, the group 

 as a whofe resembling very closely the flora of the sandy 

 loam regions of the State in the vicinity of Oxford and 



