CONCLUDING PREFACE. 
In bringing the present work to a close it had been my intention, as 
announced in the Preface to the first volume, to have supplemented 
it with an account of the species added to the Australian Flora during 
its progress, and a detailed examination of the relations as well of 
the whole flora to that of other countries, as of its component parts to 
each other. I now, however, find that this would entail more labour 
than at my age it would be prudent to undertake. The additional 
species have, moreover, been described by Baron von Mueller in his 
Fragmenta; and itis to be hoped that, in order to render these 
descriptions readily accessible to those who have to make use of my 
Flora, he will consolidate them into a methodical synopsis in con- 
formity with the system I have adopted. This would give him the 
opportunity of re-arranging my genera with reformed characters in 
those cases where his views have proved to be at variance with mine. 
With regard to Geographical Distribution, I can only repeat that 
recent discoveries and the additional data collected have generally 
confirmed the principles laid down by J. D. Hooker in the admirable 
Essay prefixed to his ' Flora Tasmaniz,’ and that it is only in minor 
details that corrections or additions have now to be made to it. These 
I am compelled to leave in other hands; but it may be useful on the 
present occasion to recapitulate shortly the general characteristics of 
the chief component parts of the present Flora of Australia (including 
Tasmania). SUM 
1. The predominant portion appears to be strictly indigenous. Not- 
withstanding an evident though very remote ordinal tribual or 
