148 STATE BOARD OF AGRICULTURE. 



and is circular in outline, and flattened, both sides being more or less 

 convex. The seed is sometimes enclosed by the dried remains of the 

 live sepals of the flower, but these are often absent. The seed is either 

 dark gray or black in color, and is occasionally found with the hull, 

 or part of it, removed. It flowers from the first of June until frost, 

 and is very widely distributed, occurring in most crops. It may be re- 

 moved from red clover seed by careful screening. S 4G W 48. 



Amaranthus retroflexus — Rough Pigweed. Annual, introduced from 

 tropical America. The seed is highly polished, jet black, or occasionally 

 reddish black, about as large as the seed of Lamb's Quarters. It is 

 almost egg-shaped in outline, much flattened and convex ou both sides. 

 It is a very heavy seeder, but may be suppressed by preventing seeding, 

 S 58 W G2. 



Chaetochloa viridis — Green Foxtail or Pigeon Grass. An annual, intro- 

 duced from Europe, The seed is oval in outline, a little pointed at the 

 tip end, with the outer scale folded over the polished edges of the inner 

 scale. It is somewhat smaller than red clover. It is very variable in 

 color, depending on the degree of ripeness. It ranges from yellow 

 through gray and brown to uearl}^ black. When the hull is removed it 

 leaves a light green kernel. It is somewhat lighter in weight than red 

 clover seed, and some of it may be fanned out of red clover. Any 

 practise which will prevent it from seeding will eventually eradicate 

 it. It is one of the commonest weeds in the state. S 24 W 10. 



Chaetochloa glauca — Yellow foxtail. The seeds are similar in appear- 

 ance to green foxtail, but are much larger, and therefore easier to clean 

 out of red clover. S 23 W 11. 



Cuscuta spp. — Dodders. This plant is a parasite, mostly pale yellow in 

 color. Many of the varieties were introduced from Europe. 



The seeds are dull and vary in color from light brown to very dark 

 brown. They are minutely pitted and are mostly broad oval in shape, 

 a little smaller than red clover, except one or two species which are 

 about the same size. The only thing to be done when an area is in- 

 fected with this vine, is to cut it out and burn it. The seeds will 

 ripen if the cut plants are left along the roadside or piled in a corner 

 of the fleld. S 144-8 W 165-0. 



Daucus carota — AVild Carrot. A biennial, introduced from Europe. The 

 seed is light green in color, about the size of a red Clover seed and 

 oval in shape. It is flat on one side and convex on the other. On the 

 convex side are a number of ridges, some of them terminating in long 

 spines, which are easilv rubbed ofl". This plant is spreading rather 

 rapidly in Michigan.- S'l38 W 15G. 



Echinochloa crus-galli — Baniyard Grass. A native annual, found in 

 warm regions. The seeds are similar to those of the pigeon grasses only 

 a little more pointed, and light gray in color and very shiny. They 

 are about the same size as those of yellow foxtail. Not of great conse- 

 quence except wdiere there is considerable moisture. S 13 W 12. 



Panicum capillare — Witch Grass. A native annual. The seeds are 

 elliptical, gray in color and very highly polished. They are much smaller 

 than those of red clover and should be easily cleaned out by fanning, 

 S 17 W 18. 



Plantago lanceolata— Buckhorn, Red Eipple, Rib-grass, Narrow leaved 

 Plantain. Naturalized from Europe, Either biennial or perennial. 



