66 



Ribs low and inconspicuous. Hairy grasses : Bromus 

 asper, Hordeum, Anthoxanthum, TritLum (may 

 be hairless). 



Bromus asper, Murr. (Rough brome). Sheath clothed 

 with long, downward sloping hair. Blade taper- 

 based ; keel white and prominent ; compared with 

 other bromes the leaf is thick and firm. 

 Fig. 7. Eared base of blade. 

 Fig. 8. Ligule spread out and magnified ; observe 



that it is rounded off. After Lund. 

 Very like B. asper. Blade firm ; sheath clothed 



with long hair. 

 Hordeum sylvaticum, Huds. (Wood barley). In 



WOOdS. 



Hordeum pratense, Huds. (Meadow barley). In 

 meadows. 



Blade remarkably thin and broader. 



Hordeum murinum, L. (Wall barley). The hair on 



the sheath is either comparatively sparse and stiff, 



or, if abundant, it is short, soft, and downy. An 



annua f t the flowers to be found in all the shoots. 



Base of blade with small round ears (fig. 9). 



Anthoxanthum. 



Anthoxanthuin odoratum, L. (Sweet vernal). Bitter- 

 tasted (from cumarin). Hair often localised as a 

 beard at top of sheath and base of blade. 

 Fig. 9. Base of blade with small round ears. 

 Fig. 10. Apex of blade. 

 Fig. ii. The ligule spread out and magnified. After 



Lund. 



Ligule a mere margin, with a fringe of very fine, 



hairlike teeth. The hair on the sheath is 



sparse or absent. (Elymus], Triticum. 



( Ely mus. Ribs prominent. See beginning of G roup. ) 



Triticum. Ribs low and flat, or inconspicuous; blade 



remarkably thin and dry. 

 Triticum repens, L. (Common couch). Blade rough 



mainly on upper surface. 

 Fig. 12. Eared base of blade. 

 Fig. 13. The ligule (magnified). 

 Fig. 14. Section of rolled blade, with low, flat ribs 



(magnified). After Lund. 



Triticum caninum, Huds. (Wood couch). Blade 

 rough on lower and upper surfaces ; veins appear 

 as wJiite lines by transmitted light. 



