107 

 Subtribe 3— ARUNDINE^E. 



Tall grasses with a many-flowered panicle ; spikelets two to many 

 flowered ; rhachilla or the flowering glumes generally long 

 pilose; flowering glumes three-toothed, or one to three- 

 awned. 

 Genera ; 1. Arundo ; 2. Phragmites. 



Subtribe 4.— SESLERLffi. 



Spikelets capitate, subspicate, or appressed in a spike-like panicle ; 

 flowering glumes three to five nerved. 

 Genera: 1. Monanthochloe ; 2. Munroa ; 3. Lamarckia. 



Subtribe 5— ERAGROSTE.3E. 



Spikelets variously paniculate ; flowering glumes, mostly three- 

 nerved, rarely one-nerved. 

 Genera ; 1. Koeleria ; 2. Eatonia ; 3. Dissanthelium ; 4. Cata- 

 brosa ; 5. Eragrostis. 



Subtribe 6.— MELICE^. 



Flowering glumes three to five or many nerved, more or less invo- 

 lute, the upper two or more empty or imperfect. 

 Genera : 1. Melica ; 2. Diarrhena ; 3. Streptogyne. 



Subtribe 7.— EUFESTUCE^. 



Flowering glumes five to many nerved, the upper one empty, style 

 short, stigmas plumose ; leaves generally narrow, without 

 transverse veins. 

 Genera: 1. Pleuropogon ; 2. Uniola ; 3. Distichlis ; 4. Dac- 

 tylis ; 5. Briza ; 6. Poa ; 7. Glyceria; 8. Arctophila ; 9. 

 Fluminia ; 10. Festuca; 11. Bromus- 



Tribe 6.— HOEDEACEJE. 



Spikelets one to many flowered, sessile on the teeth or excavations 

 of the rhachis of the simple spike. 



Subtribe 1.— TEITICEiE. 



Spikelets solitary at the nodes, three to many flowered, rarely two 

 flowered ; spike usually stout. 

 Genera: 1. Lolium; 2. Agropyrum. 



