22 Mr. Brown, on theProteacea of Jussieti. 



Feature in the vegetation of the country, and contains a far 

 greater number of species than on the east: — and in that part of 

 tlie south coast, wliich was first examined by captain FHnders, it 

 seems to be more scanty than at either of the extremes. 



On the west coast also, the species upon the wdioleare more simi- 

 lar to those of Africa than on the east, where they bear a somewhat 

 greater resemblance to the American portion of the order. 



From the parallel of the mass, the order diminishes in both 

 directions; but the diminution towards the north is probably 

 more rapid on the east than on the west coast. 



Within the tropic, on the east coast, no genera have hitherto 

 been observed, which are not also found beyond it ; unless that 

 section of GreviUea, which I have called CydoptercB, be considered 

 as a genus. Whereas at the southern limit of the order several 

 genera make their appearance, which do not occur in its chief 

 parallel. 



The most numerous genera are also the most widely diffused. 

 Thus GreviUea, Hakea, Banksia, and Persooniay extensive in 

 species in the order in which they are here mentioned, are spread 

 nearly in the same proportion ; and they are likewise the only 

 genera that have as yet been observed within the tropic. 



Of such of the remaining genera, as consist of several species, 

 some, as Isopogon, Petrophila, Conospermum, and Lamhertia, are 

 found in every part of the principal parallel, but hardly exist 

 beyond it. Others, as Josephia and Synaphea, equally limited 

 to this parallel, have been observed only towards its western ex- 

 tremity ; while Emhothrium (comprehending for the present un- 

 der this name all the many-seeded plants of the order), which is 

 chiefly found on the east coast, and makes very little progress 

 towards the west, advances to the utmost limit of south latitude, 

 and there ascends to the summits of the highest mountains. 



Genera 



