120 



THE TRUE GRASSES. 



D. ccespitosa Beauv. (Fig. 61), with large, open panicles, 

 narrow, rough, hard leaves, forms a thick turf, and is 

 cosmopolitan. It is of little value for fodder. 



FIG. 61. Deschampxia ccespitosa 

 Beauv. (After Nees, Gen. Germ., 



FIG. 60. Corynephorus canescens 

 Bv. (After Nees, Gen. Germ., I. 

 42.) 



FIG. 62. Trisetum pra- 

 tense Pers. (After Nees. 

 Gen. Germ., I. 46.) 



Sec. II. Avendla Parl. (as a genus) (Lerchenfeldia 

 Schur.). Awns geniculate (D. flexuosa Trin. and others). 



Sec. III. Vahlodea Fries (as a genus). Like Section 

 II, but with entire flowering glumes (Airidium Steud., 

 Peyritschia Four., and Monandrah-a Desv. are more or 

 less anomalous species). 



158. (158) Trisetum Pers. Spikelets in an open or 

 close panicle, two-flowered, rarely 3-6-flowered ; empty 

 glumes unequal, 1-3-nerved ; flowering glumes keeled ; 

 callus and rachilla usually hairy ; lateral teeth of the 

 flowering glumes frequently produced into awns ; middle 

 awn geniculate. 



Species about fifty, from the Arctic regions through 



