330 



The Agricultural Experiment Station or the U. S. Department of Agri- 

 culture will gladly furnish bulletins on weeds or weed seeds, or name 

 specimens of weeds or seeds sent in. 



It is not possible in this brief article to take up a consideration of a 



Dodder on Clover 



large number of individual weeds. It must of necessity suffice to consider 

 the larger groups into which all our weeds fall — annuals, biennials and per- 

 ennials. Annuals are those which grow from seed, and in turn produce 

 flowers and seed, all within the one growing season. They are, as a rule, 

 fibrous rooted and propagate by seed only. Many of them produce seed in 



