TABULAR VIEW OF BRITISH GRASSES. 141 



STREPTATHERJE.-~Continu*d. 



Inflorescence a panicle. Florets in twos or more. Awn 



on outer palea long and twisted. Avena, 41-43. 

 Inflorescence a panicle. Lower florets male only. 



Avrhenatherunu 44. 



ASTREFMS. Spikclets with several (rarely one or two) perfect 

 florets. Outer palea awnless or ending in a straight aw r n ; 

 inner palea prominently two-nerved or two-keeled, usually 

 as long or nearly as long as the glumes. 



Milieu. Spikelets paniculate, with one or two florets, 

 the rachilla not produced beyond the floret. Milium, 2 . 

 Chlorides. Spikelets with one or more florets, sessile 

 along the simple branches of the panicle. 

 Spikes digitate, branches three, four, or five. Cynodon, 47. 

 Spikes branched ; branches two or (rarely) three. 

 Spartina, 48. 

 Horded. Spikelets with one or several florets, and 

 usually sessile in the notches of a simple spike 

 Florets solitary ; spikelets on alternate sides of spike ; 



axis jointed at each notch. Lepturus, 49. 

 Florets solitary ; spikelets alternate in two rows on 



unilateral spike, only one style. Nardus, 50. 

 Florets in twos or fours ; two spikelets in each notch. 



Ely mas, 5 1 . 

 Florets in threes ; three spikelets in each notch. 



Hovdeum, 52-55. 

 Florets many ; one spikelet in each notch ; edge of 



glumes adjoining axis. Agvopyrum, 56, 57. 

 Florets many, one spikelet in each notch ; back of 



glumes adjoining axis. Lolium, 58, 59. 

 Florets many ; axis of spike not notched. Bvachypodiuin, 

 60, 61. 

 Festuceje. Spikelets with several florets, and stalked. 

 Inflorescence a panicle, loose or compact ; florets many ; 

 style placed on one side of apex of ovary ; outer palea 

 terminating above base of awn. Bromus, 62-68. 



