

295 



There is much difficulty in standardising juvenile leaves, by reason of the 

 incompleteness already referred to. Our object should be to have them as young as 

 possible, thus showing as many of the characters as we can get. 



When dealing with an orbicular leaf, we may note the curving of the secondary 

 veins in the early stages ; afterwards they become less curved, often almost straight. 



Most of the juvenile leaves being broad, there is a tendency in the secondary 

 veins to be more spreading than in the case of the mature leaves. There is greater 

 uniformity in the venation, that is to say, a greater range of angle in the same species 

 than in mature leaves. So far as one can see, the measurements of the angles do not 

 indicate recognised groups as definitely in the juvenile as in mature leaves. I have 

 referred to a few groups only, such as the Renantherae. 



I shall go more into the subject when mature leaves are dealt with, and in the 

 meantime advocate that closer attention be given in the field to the measurements of 

 these angles. 



15-20°. 

 E. gracilis. 



25-35°. 

 E. amygdalina (Renantherae). E. ligustrina (Renantherae). 



E. capitellata „ E. numerosa ,, 



25-40°. 

 E. eugenioides (Renantherse). 



25-50°. 

 E. dives (Renantherae). E. virgata (Renantherae). 



30°. 

 E. odorata. 





30-35°. 



E. Benthami. 





E. Broivnii. 



E. macrorrhynca (Renantherae). 









30- 



-40°. 



E. amygdalina (Renantherae). 





E. hmmastoma (Renantherae). 



E. capitellata ,, 





E. numerosa ,, 



E. Consideniana „ 







E. elceopliora. 





E. polyanthemos. 



E. odorata var. calcicultrix. 





E. Simmondsii. 



E. Jenseni. 





E. viminalis. 





30- 



-45°. 



E. de Beuzevillei (Renantherae). 





E. eugenioides (Renantherae). 



E. affinis. 





E. ovata. 



E. Behriana. 





E. Simmondsii. 



E. Beyeri. 





E. viminalis. 





30- 



-50 • 



E. altior (Renantherae). 





E. Simmondsii. 



E. redunca var. melanophloia. 





E. viminalis. 



