256 
A. G. Tansley. 
Fig. 82. Diagram illustrating connexion of internal phloem of leaf-trace 
with phloem of stele, as seen in radial section of the stele at the point of 
departure of a trace, l.t., leaf trace; cort., cortex; pit., external phloem, of 
stele above departure of trace. From Seward and Ford. 
Fig. 83. Osmunda rcgalis. Diagram illustrating the course of the xylem 
strands of the stele. The leaf traces are numbered from below upwards. 
Leaf-gaps black, protoxylems dotted. After Zenetti. 
