2 4 



GRAMINE^E. 



[CLASS 



OBSERVE, in any common Grass, the stem, called a 

 culm, usually hollow (festular), jointed, and with sheathing 



FIG. 182, Ternate one flowered spikelets o Barley. 



leaves, the sheath being almost invariably splk down the 

 front, and embracing the culm : the ligtile, a scale-like 



FIG. 183. Spikelet, dissected, of Vernal Grass. The lowest pair of scales, 

 right and left, are the outer glumes ; then come two awned empty 

 glumes ; then, to the right, the flowering glume, and, to the left, the 

 small pale ; lastly the two stamens and the pistil. 



