natural Family of Plants called Compositce. 133 
the seed being erect; and essentially in the aestivation of corolla. 
It differs from them in having both calyx and corolla distinct 
from the ovarium ; in the disposition of vessels in the corolla; in 
the filaments being jointed at top; in the seed being without al¬ 
bumen ; and in its remarkable inflorescence, compatible, indeed, 
with the nature of the irregularity in the corolla of Goodenovice, but 
which can hardly coexist with that characterizing Lobeliacece*. 
With Compositce it agrees essentially in inflorescence; in the aesti¬ 
vation of corolla ; in the remarkable joint or change of texture in 
the apex of its filaments ; and in the structure of the ovarium and 
seed. It differs from them in having ovarium liberum or superum; 
in the want of a glandular disk; in the immediately hypogynous 
insertion of the filaments; in the indusium of the stigma; and 
in the vascular structure of the corolla, whose tube has five 
nerves only, and these continued through the axes of the laciniae, 
either terminating simply (as is at least frequently the case in 
Brunonia sericea ), or (as in B. australis ) dividing at top into two 
recurrent branches forming lateral nerves, at first sight resembling 
those of Compositae, but which hardly reach to the base of the 
laciniae. 
It is a curious circumstance that Brunonia should so completely 
differ from Compositce in the disposition of vessels of the corolla, 
while both orders agree in the no less remarkable structure of the 
jointed filament; a character which had been observed in a 
very few Compositcef only before the publication of M. Cassini's 
second Dissertation, where it is proved to be nearly universal in 
the order. 
In the opposite parietes of the ovarium of Brunonia two nerves 
or vascular cords are observable, which are continued into the 
style, where they become approximated and parallel. This struc- 
* See Flinders’s Voyage to Terra Australis, ii. p. 559. 
f Batsch Anal. Flor. p. 107 j et Schkuhr Handb. tab. 236 et 244. 
ture, 
