PLATE IV. 





Transverse section through a leaf showing mid-rib (on the left] aiul'porfic-ii, 

 of the leaf in proximity to it. Angofhoras are comparatively free of oil giant's 

 and none was seen in the original section. The supporting tissue of the mid-rib 

 is a conspicuous feature. The xvlem of the mid-rib or vascular bundle i-, Mir 

 rounded by phloem, so that it is bicollateral in this case. Palisade tissue i- 

 developed towards the upper side only, thus showing a great resemblance in tin 

 respect to E. corymbosa, and adding more weight to the evolutionary hypothesis 

 advanced in this work. 



ANGOPHORA LANCEOLATA. CAV. 



