JPET Be WE 
Figure 17.—Diagrammatic representation of median longitudinal sec- 
tion through stem and axillary branch; L, subtending leaf; 
vascular portions stippled. >< 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. >< 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. >< 30. 
