22 



well as of most varieties grown witliin the limits of the 

 United States, are much larger than those of Havana^ 

 Syrian and numerous other species of the plant, while the 

 color of these last named varieties is a lighter shade of 

 brown. 



The color of the seed also varies according to the varie- 

 ties of the plant. The seeds of some species are of a dark 

 brown, while others are of a lighter shade. 



The seed are so small that the variety to which they be- 

 long can not be determined except by planting or sowing^ 

 them. The plants selected for seed should be left growing 

 late in the season. Strong, healthy plants generally pro- 

 duce large, welliilled capsules, and these should be selected 

 by the grower for seed. The largest and Unest capsules on 

 the plant mature iirst, while the smaller ones grow much 

 slower and are frequently several weeks changing from 

 their green to brown color. Many of the capsules contain 

 imperfect seed and some do not contain any seed at all. 



The Sucker. — The sucker makes its appearance at the 

 junction of the leaves and stalk, as indicated in tigure 7. 



Figure 7. 



Usually these are not seen until after the plant has been 

 topped, when they come forward rapidly and if not plucked 

 off in a short time develop into strong, vigorous shoots. 



