BOTANY ON TERRA AUSTRALIS. G3 



clones, bear nearly the same proportion to tlicsc })riinary 

 divisions in tlic Anstralian Flora. 



The fonr remaining orders arc Myrtaceoc, Proteacctu, 

 Restiacesc, and Epacrideac. Of these Mi/rlaccce, though it 

 is likewise very general, has evidently its niaxiinuni in 

 Terra Anstralis, more species having been already obser\X'd 

 in that country than in all other parts of the world ; 

 VroteacecB and Rei^liaccce^ which are nearly conhned to the 

 southern hemisphere, and appear to be most abundant in 

 the principal parallel of New Holland, are also very nume- 

 rous at the Cape of Good Hope : and Upacridea, at least, 

 equally limited to the southern hemisphere, are, with very 

 few exceptions, confined to Terra Australis. 



Several other less extensive natural families have also 

 their maximum in this country, especially GoodenovicC, 

 Stylideae, Myoporina}, Pittosporese, Dilleniaceoe, Diosmea?, 

 and Halorageae ; but the only orders that appear to be 

 absolutely confined to Terra Australis are TremandrcDC and 

 Stackhouseae, both of them very small tribes, which [5Sb 

 many botanists may be disposed to consider rather as genera 

 than separate families. 



A great part of the genera of Terra Australis are peculiar 

 to it, and also a considerable number of the species of such 

 of its genera as are found in other countries. 



Of the species at present composing its Flora scarcely 

 more than 400, or one tenth of the Avholc number, have 

 been observed in other parts of the world. j\Iore than half 

 of these are Phsenogamous plants^ of wdiich the greater part 

 are natives of India, and the islands of the southern Pacific ; 

 several, however, are European plants, and a few belong 

 even to equinoctial America. Of the Cryptogamous 

 plants the far greater part are natives of Europe. 



In comparing very generally the Elora of the principal 

 ])arallel of Terra Australis with that of South Africa, we 

 find several natural families characteristic of the AustraHan 

 vegetation, as ProteacCtC, Diosmcoc, RestiaccsQ, Polygalcas 

 and also Buttneriaceae, if Herman nia and ]\Iahcrnia be 

 considered as part of this order, existing, and in nearly 

 equal abundance, at the Cape of Good Hope ; others arc 



