310 GENERAL VIEW OF THE 



beyond the tropic in New Holland and inVanDiemen's Land. 

 19] The Zamia, already noticed, if not specifically different 

 from sjjiralis, would furnish another example of a plant 

 peculiar to New Holland, and very generally found in the 

 extra-tropical parts of that continent. I had, however, 

 myself observed on the south coast a Zamia of at least ten 

 feet in height, which I suspected might be distinct from 

 Z. spiralis of the neighbourhood of Port Jackson, and 

 which is probably the same with that of Swan River. 



The Exocarpas of the Swan River may possibly differ 

 from cupressiformis, though there is nothing in the speci- 

 mens to make it probable that it is specifically distinct. 

 But Exocarpus cvpressiformis is found very generally, not 

 only in the southern parts of New Holland and Van Die- 

 men's Land, but also within the tropic. 



The last plant in the collection whose range is very 

 extensive remaining to be noticed, I have not been able to 

 distinguish from Arenaria marina of the shores of Europe. 



Of the families existing in the vicinity of Swan River, 

 the most striking, as well as the most extensive, is Froteacece, 

 a tribe which, from its general dispersion, and the remark- 

 able forms of its numerous genera and species, includes 

 many of the chief peculiarities of the vegetation of New 

 Holland. 



In Mr. Eraser's collection, the principal genera of this 

 order are — Fetrophila, Isopogon, Hakea, and Banksia ; 

 and these are also the most abundant in the districts of 

 King George's Sound and of Lucky Bay. The number of 

 species of the two first-mentioned genera confirms the re- 

 mark made in the Botanical Appendix to Captain Elinders's 

 Voyage^ — namely, that in New Holland, at the western ex- 

 tremity of the parallel of latitude in which the great mass 

 of this order of plants is found, a closer resemblance is 

 observable to the South African portion of the order than 

 on the east coast, where those allied to the American part 

 chiefly occur. 



This is not the place to enter into a particular account 

 of the new species of this family existing in the collections 



' {^Ante, p, 41.1 



