EUCALYPTUS. j 77 



present amygdalina in California. Leucoxylon and sider- 

 oxylon I have accepted as separate species. The variety 

 pallida of sideroxylon is almost worthy of specific rank. 

 Eucalyptus viminalis has a considerable range of variation 

 here and one of these forms is persistent and specific. 



Baron Von Mueller writes me that the specimen of our 

 Eucalyptus robusta sent him is robusta. Yet it is very 

 different in its bud form from the plate of this species in 

 the Eucalyptographia. What I have called Eucalyptus 

 Californica is by Von Mueller called occidentalis. It is 

 quite different in bark, flowers, fruits and foliage from the 

 typical occidentalis and has varieties of its own. I have 

 never seen a typical Eucalyptus maculata. We have only 

 the variety citriodora, but I think that this tree as well as 

 the lemon-scented ironbark are separate species; many other 

 similar instances exist in the genus. In a general way I 

 believe that a considerable number of additional species 

 should be recognized in the Eucalyptus. 



This work of complete classification could best be done 

 in Australia where the old trees could be often definitively 

 placed by their seedlings alone. 



The beautiful botanical garden at Sydney or the very 

 interesting one at Melbourne would make good seedling 

 headquarters. Such local work supplemented by experi- 

 ments in the widely distributed stations under Mr. Walter 

 Gill in South Australia together with examination and com- 

 parison of mature forms, would soon clear up the confusion 

 that now troubles us. The classification of Bentham is 

 added as an aid to students and I have also put in those 

 descriptions of his which are not clearly synonyms of 

 those in the regular system. Thus where a specimen of 



Eucalyptus can not be run out on the key and anthrial 

 12 



