24 GENERAL REMARKS ON THE 



agree with Mimosese, but differ from all the Papilionacese 

 except Arachis and Cercis. 



The Lomentacese of New Holland are not numerous, and 

 consist chiefly of the genus Cassia, the greater part of whose 

 species grow within the tropic. On the east coast they 

 probably do not extend beyond 35° lat. ; and on the south 

 coast only one species has been observed, it was found in 

 32° S. lat. and is remarkable in being aphyllous, with di- 

 lated footstalks exactly like the Acacise already noticed. 



The third order, Papilionace^, which comprehends 

 about three fourths of the whole class at present known, 

 includes also nearly the same proportion of the Australian 

 Leguminosse. 



Papilionacese admit of subdivision into several natural 

 sections^ but in Terra Australis they may be divided almost 

 equally, and without violence to natural affinities, into 

 those with connected and those with distinct stamina. 



The decandrous part of the whole order bears a very 

 small proportion to the diadelphous, which in Persoon's 

 synopsis is to the former as nearly 80 to 1, while in Terra 

 Australis, as I have already stated, the two tribes are nearly 

 equal. 



This remarkably increased proportion of Decandrous 

 Papilionaceous plants, forms another peculiarity in the vege- 

 tation of New Holland, where their maximum exists in the 

 principal parallel. They are not so generally spread over 

 the whole of Terra Australis, as the leafless Acacias, for 

 although they extend to the southern extremity of Van 

 Diemen's Island, they are even there less abundant, and 

 very few species have been observed within the tropic. 

 Papilionaceous plants with distinct stamina do not in fact 

 form a very natural subdivision of the whole order, though 

 those of New Holland, with perhaps one or two exceptions, 

 may be considered as such : this AustraHan portion, how- 

 ever, forms nearly three fourths of the whole section, at 

 present known ; the remaining part, consisting of genera, 

 most of which are very diff'erent, both from each other and 

 from those of Terra Australis, are found at the Cape of 



