208 ANNUAL WEEDS. 



found or placed in a soil which is not naturally fitted 

 for it, yet no species will arrive at its most perfect 

 development on a soil not well adapted to it. 

 Among these might be mentioned, as examples, 



Timothy (Fhleum pratense). 

 Meadow Foxtail {Alopecurus pratensis). 

 Common Spear Grass {Foa pratensis). 

 Orchard Grass {Dactylis glomerata). 

 Perennial Rye Grass {Lolium perenne). 

 Italian Rye Grass {Lolium italicum). 

 Redtop (Agrostis vulgaris). 

 Whitetop {Agrostis alba). 

 Downy Oat Grass {Avena puhescens). 

 Meadow Soft Grass {Holcus lanatus). 

 Meadow Fescue {Festuca pratensis). 

 Field Barley Grass {Hordeum pj'atense). 

 Tall Oat Grass {Arrhenatherum avenaceum). 



Timothy, as has already been seen, is the standard 

 field grass in this group, and is suited to all climates of 

 this country north of Virginia and Tennessee, though it 

 sometimes suffers from drought in states further north. 

 It is a field, and not a pasture grass, as it will not endure 

 very close and frequent cropping. This is seen in the 

 readiness with which a Timothy stubble parches up, 

 unless there is rain or cloudy weather immediately after 

 it is cut. 



V. Annual Weeds, which, though proper grasses, 

 are often very troublesome in cultivated grounds, either 

 on account of their creeping, underground stems, or 

 their rapid and luxuriant growth. Thrifty farming is a 

 ceaseless struggle against these pests, and the farmer is 

 generally careful to keep as clear as possible of them. 

 Among these may be named 



