134 VASCULAR PLANTS. 



3. Alopecurus, L. 



Spikelet 1-flowered, £ . Glumes 2, navicu- 

 lar, connate at their base; lower palet carinate; 

 upper wanting. 



U. leaves flattened; panicles spike like. 



4 - Beckmannia, Host. 



Spikelets 1 — 2-flowered; flowers £ , sessile. 

 Glumes 2, navicular ; lower palet ovate, 3-nerved, 

 embracing the upper 2-cleft, 2-nerved, one. 



71. leaves flattened; spike sessile; spikelets 

 alternate, sessile, 1-sided, 2-seriate. 



5. Phalaris, L. 



Spikelets 3-flowered, upper $ ; 2 lower neu- 

 tral, depauperate. Glumes 2, carinate. Palets 

 2, navicular; the lower larger and embracing 

 the upper. 



H> spikelets pedicillate; leaves flattened. 



6- Hie.rochloa, Gmelin. 



Spikelets 3-flowered: flowers sessile. Glumes 

 equal; carinate. Upper flower $ : lower palet 

 carinate; upper 1-nerved. 2-lower flowers $ : 

 lower palet carinate; upper 2-carinate. 



%. spikelets pedicillate; leaves flattened. 



7. Anthoxanthum, L. 



Spikelets 3-flowered. Glumes .2, carinate: 

 lower glume shorter, 1-nerved; upper 3-nerved. 



