20 TRIANDRIA. DIGYNIA. 



Poa. fluitans. Sm. 

 In ditches and overflowed grounds. y . June — July. 

 5 nutans. Willd. On rocky shady hills. Hobokcn, &c. y . 

 June — Jaly. 

 56. Bromus. L. Brome-grass. 



1 secalinus. L. f C/im or Cheat. J In grain fields. Q . 



July — Aug. §. 



2 purgans. L. Fields and road sides, y . July. § ? 



3 mollis. L. In fields and pastures. July. 



4 pubescens. Muhl. Gram. In woods, y. June July. 



5 ciliatus. L. 

 Canadensis. Mx. 



In moist rocky situations, y . July. 



57. Aristida. L. 



1 dichotoma. Mx. 



Curtopogon dichotomum. P. de B. 

 In gravelly fields and on rocks, y . Sept. 



2 racemosa. Muhl. Gram. Sandy fields. Long-Island and 



Staten-Island — Sept. 



58. Stipa. L. Feather-grass. 



avenacea. L. Walt, 

 barbata. Mx. 

 Virginica. Pers. 

 In sandy pine woods near South-Amboy. N. Jersey, y . June. 



59. Arundo. L. Reed-grass. 



1 Phragmites. L. About Elizabethtown and on Coney 



Island, y. July. 



2 agrostoides. Ph. 



Agrostis? glauca. Muhl. Gram. 

 In swamps. New-Jersey. Ed. v. s. in Herb. EdiL 



60. Avena. L. Oat-grass. 



Pennsylvania. L. 

 Trisetum Pennsylvanicum. P. de B. 

 In woods among rocks, y . July. 



61. Danthonia. Decand. 



spicata. Nutt 

 Avena spicata. L. Muhl. 

 In dry open woods, y. July. 



62. Andropogok. L. Beard-grass. 



1 purpurascens. Muhl. Gram, 

 scopariiis. Mx. 



Poflinia scoparia. Spreng. 

 Dry barren soils, y. Aug. 



2 Virginicus. Muhl. Gram- 

 argenteus. Ell. 



Anatherum Virginicum. Spreng. ( Broom-grass. J 

 In exsiccated swamps, y . Sept. 



3 nutans. L.-Muhl. Gram, 

 avenaceus. Mx. 



In arid soils, y . Sept. 



4 macrouros. Mx. In swamps. New-Jersey, y. Sept. 



