COMPAKATIYE ANALTSIS. 



235 



Leaves involute, florets awnless . . .2 



2. Spike drooping, glumes longer than the florets , Geniculatus. 



Spike erect, glumes not longer than the florets Arenarius. 



HOEDETJM. 



1. Glumes all setaceous .... Pratense. 

 Glumes not all setaceous . . . .2 



2. Glumes of lateral florets setaceous, of central floret lanceolate Murimim. 

 Inner glumes of lateral florets not setaceous, the rest 



setaceous .... Maritimiirn. 



Triticum. 



1. Spikelets imilateral 

 Spikclets distichous 



2. Glumes and florets obtuse, leaves involute 

 Glumes and florets awned or pointed, leaves 



3. Glumes scarcely ribbed, spikelets crowded 

 Glumes ribbed, spikelets not crowded 



4. Eoot fibrous 

 Eoot creeping 



Brachypodium. 

 Spike drooping, awns longer than the florets 

 Spike erect, awns shorter than the florets 



LoLIUil. 



1. Spikelets much longer than the calyx 

 Spikelets not longer than the calyx 



2. Florets with long rigid awns 

 Florets with short soft awns 



flat 



Glumes united 



Root fibrous, florets very haii'y 



Florets very hairy 

 Florets crlabrous 



EOTTBCELLIA. 

 KlfAPPIA. 



Spaetina. 



Ctnodox. 



Florets glabrous, longer than the glumes 



DiGITAIUA. 



Leaves pubescent 

 Leaves glabrous 



Loliaceum. 



2 

 . Junceiim. 



3 

 Cristatum. 



4 

 . Caninum. 

 Re-pens. 



Sylvaticum. 

 Pinnatum. 



. Perenne. 

 2 

 Temiilentmn. 

 Ariense. 



Incurvata. 



Agrostidea. 



. Stricta. 

 Alterniflora. 



Dadylon. 



Sangiiinalis. 

 Humifusa. 



2 



