il/r. Brown, on the Proteacea of Jussien. 3J 



them from that remarkable section of the genus, which I have 

 at present united with them and called Cyclopterce. Its length 

 also, when compared with that of the calyx, seems in some 

 cases to be of importance, as in distinguishing Adenanthos from 

 Spatalla ; but in general this circumstance can hardly be had 

 recourse to except in specific characters. 



The form of the stigma is in many cases of considerable im- 

 portance in characterizing genera, a fact which could not escape 

 the penetration of Dr. Smith when establishing his new genera 

 of this order : thus its conical papilla in his Concilium (the Hakea 

 of Schrader) will in many, though certainly not in all cases, 

 distinguish it from Grevillea : but its form in both these genera will 

 readily serve to separate them from Xylomelum and Rhopala ; and 

 thus also Spatalla remarkably differs from Adenanthos. Upon the 

 whole, however, it seems that its obliquity is of greater import- 

 ance than its form ; for this, when existing in any great degree, 

 is generally accompanied with a corresponding irregularity in the 

 calyx : but as this irregularity is produced for the purpose of 

 bringing all the antherae into contact with the stigma, so its obli- 

 quity in the dioicous genera Leucadendron and Aulax is not at- 

 tended with so great a degree of irregularity, which would here 

 serve no end, impregnation depending on the pollen of different 

 individuals, to insure which the surface of the stigma in these 

 genera is rough with papulae; a circumstance that, together 

 Avith its form, readily distinguishes them from all others of the 

 order. 



In Synaphea, the stigma or summit of the style inosculates 

 with the divisions of the barren filament, which in some species 

 appear beyond it in horn-like processes, but in others are en- 

 tirely lost in its substance. I am acquainted with nothing like 

 this in the whole vegetable kingdom; and such a singularity 



VOL. X. F alone. 



