Agrostis. GRAMINEiE. 441 



19. AGROSTIS. Linn.; Kunth, enum. 1. p. 217. BENT-GRASS. 



[From tlic Greek, agros, a field ; in allusion to the place of growth.] 



Glumes 2, somewliat equal, usually much longer than the flower, pointless. Paleaa 2 : lower 

 one commonly awned on the Lack ; the upper often minute or nearly wanting. — Culms 

 cespitose. Panicle diffuse ; the branches fasciculatc-verticillate. 



1. Agrostis vulgaris, JFTm^/s. Red-top. Her(Ts-grass. 



Panicle oblong, the branches spreading and roughish ; flowers awnless ; lower palea 

 3-nerved ; leaves linear ; ligule very short and truncate. — Withering. ; Engl. hot. t. 1761 ; 

 Pursh, Jl. 1 . p. 63 ; Muhl. gram. p. 70 ; Torr. fl. 1 . p. 85 ; Bigcl. fl. Bost. y. 28 ; Beck, 

 hot, p. 387 ; Darlingt. fl. Cest. p. 55 ; Kunth, enum. 1 . p. 220. A. alba, Muhl. I. c. A. 

 polymorpha, «., Trin. diss. 1 . p. 202. A. hispida, Willd. sp. 1 . 370. 



Perennial. Rhizoma creeping. Culm 1-2 feet high, erect or ascending, smooth. Leaves 

 2-3 lines wide. Panicle 4-6 inches long, usually purplish, the branches slightly hispid. 

 Glumes lanceolate, rough on the keel ; the rest smoothish and shining, expanding. Lower 

 palea nearly as long as the glumes, smooth at the base, slightly 3-toothed at the summit : 

 lower one a little, more than half the length of the upper. 



Pastures and moist meadows : common. Fl. July. Probably introduced from Europe. 



2. Agrostis alba, Linn. Herd's-grass. Fiorin-grass. 



Culms ascending, rooting at the lower joints ; panicle rather contracted, finally spreading, 

 the branches hispid ; lower palea 5-nerved ; ligule oblong. — Linn. sp. \. p. 65 ; Engl. hot. 

 t. 1189 ; Pursh, fl. 1. ;?. 64 ; Ell. sk. 1. p.\37; Bigel. fl. Bost. p. 28 ; Torr. fl. 1. p.85; 

 Beck, hot. p. 387 ; Darlingt. fl. Cest. p. 56 ; Kunth, enum. 1. p. 219. A. stolonifera, Linn. 

 A. decumbens, Muhl. gram. p. 68. 



Culms 1 - 2 feet high, sometimes decumbent. Leaves roughish ; the sheaths smooth. 

 Panicle pale green or sometimes purplish. Glumes as in the preceding species. " Lower 

 palea occasionally awned on the back, near the lip." Darlingt. 



Moist meadows : frequent. Fl. June - July. Apparently introduced. This and the 

 preceding species are united by Trinius, and it must be confessed that they are not always 

 readily distinguished. They are both completely naturalized in most parts of the United 

 Slates, and afford very good pasture for cattle, but are not much esteemed for hay. 



[Flora — Vol. 2.] 56 



