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 
