No. 20.J 



63 



Muhlenbergia glomerata, Trin. 



— mexicana, Tiin. 

 Cinna arundinacea, Linn. 

 Vilfa aspera, Beauv. 



— vaginasflora, Tor?-. 



— serotina, Tor?: 



— heterolepis, Gray. 



— cryptandra, Gray. 

 Agrostis vulgaris, With. 



— alba, Linn. 



— scabra, Willd. 

 (Trichodium laxiflorum, Michx.) 



— stricta, Willd. 



— canina, Li?in. 

 Brachyelytrum aristatum, Beauv. 

 Calamagrostis canadensis, Beauv 



— confirms, Willd. 

 (intxparisa, Gray.) 



— coarctata, To?-?: 

 Ammophila arundinacea, Host. 

 Phragmites communis, Trin. 

 Eleusine indica, Gcert. 

 Spartina cynosuroides, Willd. 



— juncea, Willd. 



— alterniflora, Lois. 

 Bouteloua racemosa, Lag. 

 Aira flexuosa, Linn. 



— atropurpurea, Wahl. 



— caespitosa, Linn. 

 Trisetum molle, Kth. 

 Avena pennsylvanica, Linn. 



— striata, Michx. 

 Arrhenatherum avenaceum, Beauv. 

 Danthonia spicata, Beauv. 

 Tricuspis seslerioides, Torr. 

 Uralepis purpurea, Nutt. 



var. aristulata. 

 (U. aristxdata, Nutt.) 

 Poa annua, Linn. 



— laxa, Hanke. 



— trivialis, Linn. 



— pratensis, Linn. 



— compressa, Linn. 



— pungens, Nutt. 



Poa nemoralis, Lin?i. 



— serotina, Ehrh. 



— debilis, Torr. 



— eragrostis, Linn. 



— pilosa, Linn. 



— reptans, 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, Linn. 

 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, Li?m. 



— villosus, Muhl. 



— hystrix, Linn. 

 Andropogon nutans, Linn. 



— scoparius, Muhl. 



— furcatus, Muhl. 



— virginicus, Linn. 



— macrourus, Michx. 



