GOSSYPIUM 



42-7 



denary vascular system by anastomoses, and by the development of 

 secondary vascular tissues as the node and upper portions of the 

 hypocotyl mature. 



Fig. 2.18. A and B, transections of upper hypocotyl showing stages in transition at level 

 where endarch condition is attained: mx, metaxylem; pb, phloem; pi, pith; px, protoxy- 

 lem. (After Spieth.) 



Ontogeny of the Fruiting Branch. — The development of the 

 main stem and its vegetative branches results from the continued 

 activity of the terminal meristem of each axis. This monopodial 

 growth is in contrast to the sympodial development of the fruiting 

 branch. (Fig. 1.1.0, A, B.) Gore (18) has described the ontogeny 

 of the fruiting axis in detail. 



