BOTANY OF THE ROUTE. 
49 
Reboulea Pennsylvania, Gray. 
Poa pratensis, Linn. 
Poa crocata, Michx. 
Triticum repens, Linn. 
Elymus canadensis, Linn. 
Hordeum pusillum, Nutt. 
Hordeum jubatum, Ait. 
Panicum clandestinum, Linn. 
Panicum xanthophysum, Gray. 
Anpropogon scoparius, Michx. 
Equisetum hyemale, Linn. 
Cistopteris fragilis, Bernh. 
Woodsia obtusa, Torr. 
Asplenium angustifolium, Pursh. 
Adiantum pedatum, Linn. 
Botrychium Yirginicum, Swartz. 
7t 
