182 SUMMER FLOWERS. 



(325) Triticum — spike simple ; spikelets solitary, sessile, trans- 



verse to the racbis, mauy-flowered ; glumes two, opposite, 

 nearly equal, embracing tbe flowers ; pales two, lanceo- 

 late, tbe outer acuminate or awned, tbe inner bifid. 



(326) Lolium — spike elongated, simple, compressed; spikelets at 



rigbt angles witb tbe racbis, witb a bract at tbe base of 

 each ; glumes two, lateral, often deficient ; pales two, 

 nearly equal ; tbe outer sometimes awned under tbe apex ; 

 stamens tbree ; styles two. 



(327) Brachypodiiim — spike simple ; spikelets transverse to tbe 



racbis, witb a sbort pedicel ; glumes two, unequal, sborter 

 tban tbe lower florets ; pales two, tbe lower awned under 

 tbe point, or awnless ; stamens tbree ; styles two. 



ttttt Spikelets several-flowered, pedicellate; awns, if any ^ 

 straight (Festuceae). 



X JPales aicned. 



(328) Bromus — panicle loose ; spikelets laterally compressed ; 



glumes two, unequal, sborter tban tbe lower florets ; 

 pales two, tbe lower awned under tbe apex, very seldom 

 awnless ; stamens tbree ; styles two. 



(329) Festuca — panicle loose; spikelets laterally compressed; 



glumes two, unequal, or nearly equal, acute ; pales two, 

 tbe lower mucronate or awned at tbe point ; stamens 

 tbree ; styles two. 



(330) Daetylis — panicle loose or somewbat contracted, the ter- 



minal ramifications always very sbort ; spikelets clustered, 

 horizontal ; glumes two, unequal-sided ; pales two, the 

 lower awned under tbe apex ; stamens three ; styles two. 



(331) Cynosurus — panicle contracted, spike-like, unilateral ; 



spikelets two- or many-flowered, distichous, with a pec- 

 tinated involucre at tbe base ; glumes two, equal ; pales 

 two, the lower awned from tbe apex or mucronate ; 

 stamens tbree ; styles two. 



