DESCRIPTIONS OF TRIBES AND GENERA. 



149 



SUB-TRIBE C. Arundineae. 



Flowering glumes awnless or short-awned; rachilla or flowering glume 

 with long hairs. 



214. (209) Gynerium Humb. & Bonpl. Spikelets 

 loosely 2- oo-flowered, narrow ; glumes membranaceous ; 

 flowering glume three-nerved, subulate, produced into a 



FIG. 75. Gynerium argenteum Nees. (From Muller's "Die 



fine awn. Tall reed-like grasses with long, rigid, narrow 

 leaves that are much crowded at the base, and very 

 large, thick, silvery-shining panicles. 



Species three, in tropical and sub-tropical America. 

 G. argenteum Nees, " Pampas-grass," from Southern Brazil 

 and the Argentine Republic, has a culm 3-6 m. high ; 

 leaves 1-3 m. long ; panicles 0.5-0.8 m. long; the $ pani- 

 cle broad-pyramidal; the ? narrower, linear, elongated, 



