324 COLLEGE BOTANY 



There are a great many other grasses, many of which are of 

 great agricultural value. Among the most important are timothy 

 Thleum praiense), the orchard grass (Dactylis glomerata) and 



Fig. 164. — Cyperacese 



the blue grass {Pow pratensis). There are also many grasses 

 which are great annoyances to the farmer and may be classed 

 as weeds (Fig. 163). 



Cypeeaceje (Sedge Family).- — Herbs which are grass-like 

 or rush-like in character; stems usually solid; leaves three- 



