30 Mr. Brown, on the Froteacea of Jussieu. 



pala, Xylomelum, and Lamhertia are readily distinguished from 

 Eiiibothrhim, Grevilka, and Hakea; and thus also Persoonia and 

 Brabejum remarkably differ from Gevuina; while Belkndena differs 

 from all others in having its stamina distinct from the calyx, 

 affording however an indication of the real origin of these 

 organs in the whole famil}^ 



The deviations from the usual structure of antheeje in this 

 order are not many; but some of them are of so singular a 

 nature as to constitute the essential characters of the genera in 

 which they take place. These genera are Simsia, Conospermum^ and 

 Synaphea, all of which are most truly syngenesious ; for not only 

 do their antherae firmly cohere together, but the corresponding 

 lobes of these being, when considered separately, entirely open, 

 are so applied to each other as to form but one cell, without a 

 trace of any intermediate membrane. In Simsia the four antherae 

 are perfect, each consisting, as in the rest of the order, of two 

 lobes, and therefore the whole before bursting constitute four 

 cells. Whereas in Conospermum and Synaphta one filament is 

 entirely barren, the two lateral ones have each a single-lobed 

 anthera, and the fourth alone is perfect: hence before bursting 

 the whole form only two cells. 



This remarkable structure, which can only be ascertained be- 

 fore the opening of the calyx, necessarily escaped Dr. Smith in 

 describing his Conospermum, for I conclude he had only the ex- 

 panded flower before him, and the appearance of the antherae in 

 this state after their separation justifies him in referring the genus 

 to Tetrandria: but according to the view now given of its struc- 

 ture, it can have no other pretension to a place in this class than 

 its belonging to Proteacese ; and the order Syngenesia Monogamia 

 being abolished, it must be referred to Triandria. 



The only remaining anomaly in these parts occurs in Frank- 



landia. 



