GRAMINE^E. 941 



{Awns quite or very nearly terminal, sometimes reduced to a very short 

 point .....* 36 

 Membranous edges of the glumes projecting in 2 points beyond the 

 base of the awns 30. Beome. 



3 g f Spikelets crowded in a close spike or dense clusters 37 



I Panicle loose or contracted into a long one-sided spike . 31. Fescue. 

 f Outer spikelet of each cluster consisting of empty glumes only. 

 37 -{ 33. Dog's-tail. 



I All the spikelets containing flowers 32. Cock's -foot. 



oq f One terminal awnless flower and a lower male flower awned 3. Panicum. 

 I Awnless flower the lowest, with a terminal awned male one .... 39 

 r Outer glumes 2 to 3 lines, completely enclosing the flowers and their awns. 

 qq ! 20. Holcus. 



i Outer glumes 3 to 5 lines, the flowers or at least their awns protruding. 

 L 19. False-Oat. 



Spikelets 2- or more flowered, awnless, panicled or in a compound spilce. 



f Spikelets 2 or 3 together to each notch of an apparently simple spike. 



25. Lymegeass. 



40 \ Spikelets sessile, in close clusters in an apparently simple spike or spike- 



like panicle 41 



LSpikelets more or less stalked, in a loose or contracted panicle ... 43 

 r A small bract at the base of the spikelets or clusters . .41. Sesleeia. 



41 J Outer spikelet of each cluster consisting of empty glumes 33. Dog's-tail. 

 L Spikelets all containing flowers without bracts at the base of the clusters 42 

 rSpike cylindrical or slightly interrupted. Flowering glumes white and 



,oj membranous 40. Kceleeia. 



i Clusters one-sided, in an irregular spike or close panicle. Glumes 

 L herbaceous and rigid 32. Cock's-eoot. 



40 J Outer glumes enclosing the flowers or nearly so 44 



I Outer glumes shorter than the flowers 45 



f Glumes obtuse, coloured. 2 flowers with a wedge-shaped rudimen- 

 tary glume 38. Melick. 



. . J Outer glumes very acute. About 3 flowers in the spikelet, all perfect, 



with 3-toothed glumes 39. Teiodia. 



I Glumes all acute. 2 male flowers and 1 smaller perfect one in the 



L spikelet 4. Holygeass. 



r First outer glume very small, second broadly truncate at the top, and 



,-j often coloured. Flowers 2 in the spikelet .... 36. Catabeose. 

 1 Both outer glumes pointed or obtuse, not truncate. Flowers usually 



«- 3 or more . . 46 



r Spikelets broadly ovate or orbicular. Glumes closely packed and very 



46 \ spreading 34. Quakegeass. 



L Spikelets oblong or linear 47 



gtj J Flowering glumes rounded on the back, at least at the base . . . .48 

 I Flowering glumes keeled on the back 49 



