Plate V 



PLATE V 



Fig^ure 17.~Diag-t-ammatic representation of median longitudinal sec- 

 tion tlirough stem and axillary brancli ; Z., subtending leaf; 

 vascular portions stippled. X 212. 



Figure 18.— Diagrammatic representation of median longitudinal 

 section through stem at base of inflorescent branch system, 

 showing the course of the vascular bundles. Vascular portions 

 stippled. X 212. 



Figures 19-24. — A series of cross sections through stem beginning 

 just below point of leaf insertion and extending up into leaf, 

 showing course of cortical bundles from stem to leaf and in- 

 dependent origin of new cortical bundles in the stem. X 35. 



