426 THE GKASS FAMILY. 



•• Panicle of many divisions or branches, more or less open ; the spikelets 

 usually very numerous. 



+ Spikelets with conspicuous tufts of hair in the interior. 



Hairs silvery ; spikelets much crowded. 



Stems six to ten feet high ; panicle vei'y large, deep 



reddish-brown ; leaves fifteen inches long, stiff, 



finely attenuated. (Often growing in water) .. 54. Common Eeed. 



Stem two to three feet high ; spikelets small, delicate 



light brown or whitish ; leaves flaccid. (Never 



grows in water) 15. Smail Wood Eeed. 



Hairs bro\vn ; stems two to three feet high ; spikelets 

 green, far apart, drooping; awn long, twisted, 

 and bent 20. Wild Oat. 



+t Spikelets without conspicuous interior tufts of hairs. 



(I Spikelets large, awned, at the extremities of long, slender, hau'-like branchlets, 

 and drooping archwise, all to one side. 



Awns shorter than the glumes ; stems four to six feet) 83. Eough Drooping 



high ; lower leaves broad and hairy J Beome-grass. 



Awns much longer than the glumes. 



Spikelets long, linear-lanceolate ; stems two feet high. 34. Hedge Drooping 



Brome-grass. 

 Spikelets compressed ; stems three to five feet high ; ■ 

 leaves with brown auricles at the base of the 

 lamina 



30. Giant Drooping 

 Brome-grass. 



.45. Floating Sweet- 



GIUSS. 



II II Branches of the panicle erect and spreading ; sometimes slightly projecting 

 stiffly downwards, but never pendulous archwise. 



Drvisioji 1st. 



Glumes of a beautiful shining silvery gray, silvery green, or silvery yellow, often 

 semi-transparent, the spikelets always two or vwre flowered. 



Growing in water, upon which the leaves float. Panicle ' 

 long, slender, slightly branched, silvery green ; 



spikelets appressed. Anthers white 



Growing on dry land. 



Spikelets without aAvns, or only very minute ones. 

 Leaves in large, dense, cushion-like tufts, flat, 

 hard, and very rough. Stems two to four 

 feet high ; branches rough. Panicle very 



large, silvery gray, or puriilish 10. Tufted Hair-grass. 



Leaves few and smooth ; stems twelve to eighteen 

 inclies high ; spikelets triangular; variegated 

 with purple and green ; panicle tremulous. 

 (Fig. 203) 43. Quakino-grass. 



