DESCRIPTIONS OF TRIBES AND GENERA. 



149 



Sub-tribe C. — Arundineae. 



Flowering glumes awnless or short-awn ed; 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 Mullet's "Die Ptianzeuwelt.' ) 



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 Kepublic, 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 9 narrower, linear, elongated, 



