ADULT "COCKLEBUR" MUTANT 



It was first recognized as a distinct type by its narrow, slightly-toothed leaves. A typical 

 pot-grown plant. Its stems are weak and inclined to droop when grown under greenhouse 

 conditions. (Fig. 11.) 



"COCKLEBUR" SEEDLING AND NORMAL SEEDLING 



The "Cocklebur" seedling, at the left, is distinguishable from the normal seedling, at the 



right. (Fig. 12.) 



