414 THE STRUCTURE OF ECONOMIC PLANTS 



new secondary branches. Near the top of the main stem, both 

 buds may develop; and when this occurs, the axillary buds pro- 

 duce new sympodia or single flowers; and the extra-axillary ones 

 fruiting branches. 



The fruiting branches that develop from the extra-axillary 

 buds assume a nearly horizontal position, rather than the vertical 

 or ascending one of the vegetative bud. The first internode of 





Fig. -lio. Sympodial branching in cotton. The plant was pruned in such a way that 

 both axillary and extra-axillary buds developed. (Photograph by Doak.) 



