16 TRIANDRIA. DIGYNIA. 



8 sobolifera. Muhl. Gram. On rocks in Bloomingdale 



woods. If.. Aug. 



9 diffusa. Muhl. Gram. On the hiJls near Hobokcn. N 



Jersey. l{. Aug. 



38. POLYPOGON. Desf. 



glomeratus. Willd. R. &. S. 

 setosus. Sprcng. R. & S. 

 racemosus. Nutt. 

 Agrostis setosa. Muhl. Gram, 

 racemosa. Mich. 

 In Hackensack meadows. 21. Aug. — Sept. 

 .19. Aira. L. Hair-grass. 



1 mollis. Muhl. Gram. In dry woods. %. May July. 



2 truncata. Muhl. Gram. 

 Pennsylvania. Spreng. 

 obtusata. Mx. 



Airopsis obtusata. Desf. R. k. S. 

 Koclcria Pennsylvanica. Dccand. R. &. S. 

 Holcus striatus. L. ? 

 In rocky woods. Hobokcn. %. June. 



3 melicoides. Mx. 

 triflorum. Ell. 



Poa melicoides. Nutt. 

 Graphephoruni melicoides. P. dc B. 

 "With the preceding species, U. June. 



4 j)allens. Muhl. var. aristata, 

 Aveua palustris Mich. 



In wet meadows. New-Jersey. %. June. 



5 caespitosa. L. In woods near South-Amboy. u . June. 

 40. Uraiepsis. Nuttall. 



aristulata. N. 



Aira purpurea. Muhl. Gram, non Walt. 

 On the gravelly banks of the Hudson, and on the sea coast of 

 Long-Island. ©. Aug — Sept. 

 (J. Holcus. L. Soft-grass. 



1 lanatus. L. In meadows. %, May — July. § f 



2 fragrans. Willd. {'Seneca-grass. J 

 odoratus. Mx. 



Hierochloa fragrans. R. & S. 



In meadows near Greenwich. %. May 2d June. 



42. Phalaris. L. Canary-grass. 



1 Americana. Ell. 

 arundinacea. Mx.-Muhl. 

 Calamagrostis colorata. Nutt.-Sibth ? 



In bog meadows. New-Jersey, y. Aug. 



2 maritima. Nutt. 

 Arundo arenaria. L. 

 Psamma arenaria. R. & S. 



Common on the sandy sea coast near New- York. y. Aug. 

 — Sept. 



