hystricina, Willd. 

 tentaculata, Michx. 

 intumescens, Rudge. 

 Grayii, Carey, 

 lupulina, Muhl. 

 folliculata, Linn, 

 squarrosa, Schw. 

 retrorsa, Schw. 

 utriculata, Boott. 

 monile, Tuck, 

 bullata, Schk. 

 oligosperma, Michx. 

 longirostris, Torr. 



GRAMINE^E. 



Leersia Virginica, Willd. 



oryzoides, Swartz. 



lenticularis, Michx. 

 Zizania aquatica, Linn. 

 Al^pecurus pratensis, Linn. 



aristulatus, Michx. 

 Phleum pratense, Linn. 

 Vilfa aspera, Beauv. 



vaginaeflora, Torr. 

 Sporobolus heterolepis, Gray. 



cryptandrus, Gray. 

 Agrostis perennans, Tuckerm. 



scabra, Willd. 



vulgaris, Withering. 



albi, Linn. 

 Cinna arundinacea, Linn. 



var. pendula, Gray. 

 Muhlenbergia sobolifera, Trin. 



glomerata, Trin. 



Mexicana, Trin. 



silvatica, Torr. & Gray. 



Willdenovii, Trin. 

 Brachyelytrum aristatum, Beauv. 

 Calamagrostis Canadensis, Beauv. 



longifolii, Hook. 

 Oryzopsis melanocarpa, Muhl. 



asperifolia, Michx. 



Canadensis, Torr. 

 Stipa avenacea, Linn. 



spartea, Trin. 

 Aristida purpurascens, Poir. 



tuberculosa, Nutt. 

 Spartina cynosuroides, Willd. 

 Bouteloua oligostachya, Torr. 



hirsuta, Lagasca. 



curtipendula, Gray. 

 Dactylis glomerata, Linn. 

 Kneleria cristata, Pers. 

 Eatonia obtusata, Gray. 



