642 
PRESIDENT S ADDRESS. 
Australia. The principal natural orders and groups, which by 
their abundance produce this result, are the following : — 
Proteacece, Composite?. Iridece, Hcemodorece, Polygalece, Resti- 
acece, Ericacece (corresponding in South Africa to Epacridece in 
Australia), Papilionacece, Rutacece. Thymelece, Santalacece, and 
some others. 
This looks like parallelism of development from a common 
origin. 
Below is a list of the more important groups, natural orders, 
tribes, genera or parts of genera, as the case may be, which serve 
to make up the peculiar and predominant element of the Aus- 
tralian Flora. The orders Proteacece, Ficoidece and Restiacece are 
markedly South African as well. Outside the Australian region 
and South Africa some scattered representatives of the groups 
mentioned are to be found. These have the character of escapees; 
compared with the allied Australian species, their number is 
insignificant, and one cannot avoid the conclusion that Australia, 
or some southern land of which Australia is a remnant, was the 
origin and home of the various races. It is true that some of 
the outside representatives of Australian types are now separated 
by wide gaps of ocean from their congeners, but Wallace, in his 
"Island Life," has shown how plants can thus cross serious 
obstacles without the existence of actual land connexion. Some 
of the wanderers are dwellers near the seashore, and thus always 
ready, as it were, when the means presents itself, for transport 
by sea. Some have travelled in the reverse direction to the 
Indian and Malayan immigrants, while others have reversed the 
order of march of the European invaders already referred to, and 
have passed up the Andes. 
Typical Australian Groups. 
DiLLENiACEiE. — Tribe // ibbertiece. 
Pittospore^e. — All genera except Pittosporum. 
Tremandre^:. 
RuTACEiE. — Tribes Boroniece and Zanthoxylece. 
