THE BOTANY OF THE ROUTE. 45 



Reboulea Pennsylvanica, Gray. 

 PoA PRATENSis, Linn. 



POA CROCATA, Michx. 



Triticum repens, Linn. 

 Eltmus canadensis, Linn. 



HORDEUM PUSILLUM, Nutt. 



Hordeum jubatum, Ait. 

 Panicum clandestinum, Linn. 

 Panicum xanthophysum, Gray. 

 Andropogon scoparius, Michx. 

 Equisetum hyemale, Linn. 

 CisTOPTERis FRAGiLis, Bemh. 



WOODSIA OBTUSA, Torr. 



AsPLENiUM angustifolium, Pursh. 

 Adiantum pedatum, Linn. 



BOTRYCHIUM ViRGINICUM, Swartz. 



