No, 20.] 



63 



Muhlenbergia glomerata, Trin. 



— mexicana, Trin. 

 Cinna arundinacea, Linn. 

 Vilfa aspera, Beauv. 



— vaginaeflora, Torr. 



— serotina, Torr. 



• — heterolepis, Gray. 

 ■ — cryptandra, Gray. 

 Agrostis vulgaris, With. 



— alba, Linn. 



— scabra, Willd. 

 {Trichodium laxiflorum, Michx.) 



— stricta, Willd. 



— canina, Linn. 

 Brachyelytrum aristatum, Beauv. 

 Caiamagrostis canadensis, Beauv. 



• — confinus, Willd. 

 {inexpansa, Gray.) 



— coarctata, Torr. 

 Amriiophila arundinacea, Host. 

 Phragmites communis, Trin. 

 Eleusine indica, GcBrt. 

 Spartina cynosuroides, Willd. 



■ — juncea, Willd. 



— alterniflora, Lois. 

 Bouteloua racemosa. Lag. 

 Aira flexuosa, Linn. 



atropurpurea, Wahl. 



— caespitosa, Linn. 

 Trisetiim moUe, Kth. 

 Avena pennsylvanica, Linn. 



■ — striata, Michx. 

 Arrhenatherum avenaceum, Beauv. 

 Danthonia spicata, Beauv. 

 Tricuspis seslerioides, Torr. 

 Uralepis purpurea, Nutt. 

 var. aristulata. 

 (U. aristulata, Nutt.) 

 Poa annua, Lin7i. 



— laxa, Heenke. 



— trivialis, Linn. 



— pratensis, Linn. 



— compressa, Linn. 

 ■ — pungens, Nutt. 



Poa nemoralis, Li7in. 



— serotina, Ehrh. 



— debilis, Torr. 



— eragrostis, Linn. 



— pilosa, Linn. 



— reptahs, Michx. 



— hirsuta, Michx. 



— capillaris, Linn. 



— michauxii, Kth. 

 Glyceria fluitans, R. Br. 



— acutiflora, Torr. 



— aquatica, Smith. 



— nervata, Trin. 



— elongata, Trin. 



— canadensis, Trin. 



— pallida, Trin. 

 {Poa dentata, Torr.) 



Dactylis glomerata, Litin. 

 Bromus secalinus, Linn. 



— ciliatus, Linn. 

 ' — kalmii. Gray. 



{purgans, Torr., not of Linn. 



— sterilis, Linn. 

 Koeleria pennsylvanica, DC. 



— truncata, Torr. 

 Festuca duriuscula, Linn. 



— • tenella, Willd. 



— nutans, Willd. 



— elatior, Linn. 



— pratensis, Huds. 

 Diplachne fascicularis, Beauv. 

 Uniola gracilis, Michx. 

 Lolium perenne, Linn. 

 Triticum repens, Linn. 



— caninum, Linn. 

 Elymus virginicus, Linn. 



— canadensis, Li7m. 



— villosus, Muhl. 



— hystrix, Linn. 

 Andropogon nutans, Linn. 



— scoparius, Muhl. 



— furcatus, Muhl. 



— virginicus, Linn. 



— macrourus, Michx. 



