732 



WEED FLORA OF IOWA 



Fig. 553. Foxtail Grass (Alopecurus ffeniculatus) . 



mopolitan grass. 

 (U. S. Dept. of Agr.) 



Widely distributed. Cos- 



Asia, Africa, Australia, North and South America; pigeon grass 

 (Setaria glcmca), in Europe, Asia, Africa, North and South Amer- 

 ica; whorled millet {Setaria verticillata), in Europe, Asia, Africa, 

 North and South Aitierica; Johnson grass {Sorghum hdlepense), 

 in Europe, Asia, Australia and North America; foxtail grass 

 {Alopecunis geniculatus) , in Asia, New Zealand, Australia, North 

 America; hair grass {Agrostis hyemalis), in Australia, New 

 Zealand, North America; Bermuda grass {Cynodon dactylon), a 

 valuable forage plant, but, in cultivated fields, a weed, Europe, 

 Asia, Africa, Australia, New Zealand, North and South America; 

 southern spear grass {Eragrostis pilosa), Europe, Asia, Africa, 

 Australia, New Zealand, North and South America ; crowfoot grass 



