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only by the seedling plant. We shall subjoin some ex- 
tracts from Mr. Brown’s highly interesting observations on 
the natural tribe to which our plant belongs. : 
« LEGUMINOS4S. This extensive tribe may be con-~ 
«sidered as a class.divisible into at least three orders, to 
“ which proper names should be given. Of the whole class 
< about 2000 species are at present published; and in Terra 
- Australis, where this is the most numerous family, consi- 
« derably more than 400 species haye already been observed. 
« One of the three orders of Leguminoscee, which is here 
“ for the first time proposed, may be named Mimosee. It 
«< consists of the Linnean Mimosa, recently subdivided by 
« Willdenow into five genera, along with Apenanruera and 
<< Prosopis. This order-is sufficiently distinguished from 
“ both the others by the hypogynous insertion and valvular 
“ gstivation of its corolla, which being perfectly regular 
<: differs in this respect also from the greater part of Lomen- 
< face and from all the Papilionacec. 
“ Nearly the whole of the Australian species of the Lin- 
« nean genus, Mimosa, belong to the Acacta of Willdenow, 
“as it is at present, constituted; and about nine tenths of 
“ the Acacie to his first division of that genus, described by 
<‘ him as having simple leaves, but which is in reality aphyl- 
“lous; the dilated foliaceous footstalk performing the func- 
“ tions of the true compound leaf, which is produced only in 
“ the seedling plant, or occasionally in the more advanced 
“ state in particular circumstances, or where plants have 
“ been injured. . 
«The great number of species of Acacra having this 
<¢ remarkable economy in Terra Australis, forms one of the 
« most striking peculiarities of its vegetation. 
«The second order, Lomentacew or Casalpinece, com~ 
€ prehends all the genera havin erigynous stamina, a 
§ g y > 
-€ corolla whose eestiyation is not valvular, and which though 
< generally irregular is never papilionaceous. ‘To these cha- 
 racters may be added the straight embryo, in which they } 
“ asrvee with the Mimosew, but differ from all the Papilio- 
“ nacee, except Aracuis and Crnrcis. 
<The third order, Papilionacee, which comprehends 
* about three fourths of the whole class at present ‘known, 
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