The Pines of Australia. 



Figure 287. — Transverse section through a median portion of a leaf 

 showing the conical arrangement (in section) of the phloem 

 cells of the normally orientated vascular bundle. The re- 

 ticulated cells of the transfusion tissue can just be made 

 out on the right and left of the phloem, and which divide 

 the endodermal cells into two masses, one protsctin,^ tlie 

 protoxylem and the other with its three oil glands protecting 

 the phloem. Stained with hferaatoxylin and safranin. 

 Podocarpus elata, x 95. 



Figure 291.— Longitudinal section througli a portion of a leaf midway 

 between the midrib and the edge, showing how the spongy 

 parenchyma cells are arranged transversely across the 

 blade, as they are here seen to be in cross sections. The 

 palisade parenchyma is at the top of the leaf. Stained 

 with hematoxylin and safranin. Podocdrpus data, x 150. 



