( 41 ) 



11. CALAMAGROSTIS, Adans. Small-reed. 



1. Canadensis, Beauv. 



2. Nuttalliana, Steud. 



12. ORYZOPSIS, Michx. 



1. melanocarpa, Muhl. 



2. asperifolia, Michx. 



3. Canadensis, Torr. 



13. ARISTIDA, L. 



1. dichotoma, Michx. 



2. purpurascens, Poir. Mt. Holyoke, Hitchcock. West Springfield, 



Dr. Bobbins. 



14. SPARTINA, Schreb. 

 cynosuroides, Willd. Shores of Conn, river, Tuckerman. 



15. ELETJSINE, Gaertn. 

 Indica, Gaertn. Amherst, rare, Hitchcock. 



16. TRICTJSPIS, Beauv. 

 seslerioides, Ton*. Sugar-loaf, Hitchcock. 



17. DACTYLIS, L. 

 glomerata, L. Orchard Grass. 



18. EAT ONI A, Raf. 



1. obtusata, Gray. 



2. Pennsylvanica, Gray. 



19. GLYCERIA, R. Br., Trin. 



1. Canadensis, Trin. 



2. elongata, Trin. 



3. 

 4. 

 5. 



6. 



7. 



nervata, Trin. 

 pallida, Trin. 

 aquatica, Smith. 

 fluitans, R. Br. 

 acutiflora, Torr. 



Amherst. 





20. 



POA, L. 



Meadow-Grass. 



1. annua, L. 



2. compressa, L. 



3. serotina, Ehrh. 



4. pratensis, L. English Grass. 



5. trivialis, L. 



6. flexuosa, Muhl. Amherst ? P. nemoralis of Hitchcock Catal. ? 



21. ERAGROSTIS, Beauv. 



1. reptans, ISTees. 



2. poaeoides, Beauv. Amherst; rare. 



3. pilosa, Beauv. Amherst, Tucker man. 



