169 
Uncinia tenella, Triodontium Tasmanicum, and a great number of 
ferns). 
“ No numerical comparison with the Flora of South Australia and 
New South Wales has been instituted, as those localities are not suf- 
ficiently examined which bear, perhaps, in this respect, as great a 
resemblance to the adjacent Colonies as the southern tract of this 
province bears to Van Diemen’s Land. 
“ Still, there remains yet a considerable number of plants which 
impress on our vegetation a type of peculiarity ; and I may be per- 
mitted, for this reason, to call attention to our remarkable species of 
Panax, resembling mainly those of the Moluccas; to Trigonella sua- 
vissima, as the only Australian clover; to the species of Psoralea and 
to Crantzia, as connecting links with the American Flora; to Pseu- 
domorus Australasica, the indigenous mulberry tree; to Myrsine 
Howittiana, nearer connected with the New Zealand species than with 
those of New South Wales; and to the Alpine Anisotome glacialis, as 
a genus from Auckland and Campbell’s Islands. 
“ With regard to the Phytogeographia of this country, it may be 
deemed worthy of notice that, in the arid steppes beyond the Glenelg 
River, the vegetation undergoes a remarkable change, and a large 
number of such plants as are common to Victoria, New South Wales, 
and Van Diemen’s Land, cease to exist, not even re-appearing farther 
to the westward, where the physical character of the country assumes 
once more equality or similarity to the eastern provinces. Others, 
again, extend the geographical limits of certain genera or species 
which we thought to belong entirely to Western Australia: thus, for 
instance, Thomasia petalocalyx and Coleostylis Preissia range to the 
148th meridian. 
“Tt may also be worthy of remark, that the order of Leguminose 
prevails decidedly here, as in Western Australia, over all others ; and 
that the Composite, far exceeding in South Australia, and almost 
throughout the world, any other groups, rank here as the second 
order. Both, taken together, show such eminent richness. as to com- 
prise nearly a fourth of all Dicotyledonar plants. The most predo- 
minant natural orders exhibit here, with regard to their number of 
species, the following series :—Leguminose, Composite, Myrtacee, 
Alge, Filices, Cyperoidex, Graminee, Musci, Proteacee, Orchidez, 
Epacridee, Fungi, Umbellifere, Diosmezx, Liliacezw, Lichenes, La- 
biate, Goodeniacee, Scrophularine, and Salsolacee. 
“Finally, and perhaps as to the most important point of my 
researches, | have to reflect upon the practical usefulness of our vege- 
VOL. V. Z 
