natural Fainili/ of Plunts 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 GoodcnovicE, but 

 which can hardly coexist with that characterizing Lobeliacece*. 



With Composita it agrees essentially in inflorescence; in the a3sti- 

 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 Uberiun or siiperum ; 

 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 lacinife, 

 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 Compositoe in the disposition of vessels of the corolla, 

 Avhile both orders agree in the no less remarkable structure of the 

 jointed filament ; a character which had been observed in a 

 very few Compositsef 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. 



t Batsch Aual. Flor. p. 107 ; et Schkuhr Handb. tab. 236 et 244. 



ture, 



