PLATE LXXVI. 



This species which yields so large a quantity of oil, was naturally expected to have 

 large and numerous oil glands as are shown in the plate. The palisade tissue is of 

 less area on the upper than the lower side of the mesophyll, which, in this case 

 stands out more distinctly than in most sections illustrated. The cuticle shows 

 no variation on either side of the leaf. The mid-rib in the centre of the plate 

 illustrates the typical bicollateral structure of the vascular system of the Eucalypts, 

 the xylem being bordered top and bottom by phloem. Towards the upper 

 side of the xylem are the elements of the protoxylem, lower down are the 

 smaller xylem fibres, and lower again, the larger vessels. Outside the phloem 

 are the thick-walled strengthening fibres and further layers of supporting tissue. 

 The black spot on the left of mid-rib is a fungus. x 55. 



EUCALYPTUS DIVES, SCHAU. 



