16 GENERAL REMARKS ON THE 



canmcula, a mistake involving a second, that of considering 

 tlie seeds erect in the capsule, and which has led LabiUar- 

 diere into a third error, namely, descrilnng the radicule of 

 the embryo as pointing towards this supposed umbilical 

 appendix. 



545] The Tremandrese are in several respects nearly related 

 to Polygalese ; they appear to me, however, sufficiently 

 distinct, not only in the regularity of the flow^er, and in the 

 structure of antherae, but in the aestivation of both calyx 

 and corolla, in the appendix of the seed being situated at 

 its apex, and not at the umbilicus, and, T may also add, in 

 a tendency to produce an indefinite number of ovula in 

 each cell of the ovarinm. 



The greater number of Tremandrese are found in the 

 principal parallel of New Holland, they extend also to the 

 south end of Van Dienien's Island, but none have been 

 observed wdthin the tropic. 



DIOSMEtE. To this natural order, in addition to the 

 Australian genera hereafter to be mentioned, and the south 

 African genus from which its name is derived, I refer 

 Fagara, Zanthoxylon, Melicope, Jambolifera, Euodia, Pilo- 

 carpus, Empleurum, and Dictamnus : and four genera of 

 equinoctial America, namely, Cusparia of Humboldt and 

 Bonpland, Ticorea and Galipea of Aublet, and Monnieria, 

 if not absolutely of this order, belong at least to the same 

 natural class. 



Both Ruta and Peganum may be annexed to Diosmese, 

 but neither of them are calculated to give a clear idea of 

 the order, from the usual structure and habit of which 

 they deviate in some important points; I have therefore 

 proposed to derive the name of the family from one of its 

 most extensive and best known genera. The first section 

 of Jussieu^s Rutaceae is sufficiently different to admit of its 

 being considered a distinct order, which may be named 



Diosmece are numerous in Terra Australis, and form, at 

 least in its principal parallel and more southern regions, a 

 striking feature in the vegetation. Nearly seventy species 



