the Natural Faniili/ of Fiants called Scrophularina . 351 



extensive orders and genera into sections cannot, I think, be 

 doubted. 



In concluding this part of my subject, I beg leave to offer a 

 few remarks on the use of the terms contrary and parallel as 

 applied to the position of the dissepiment of bilocular fruits ; as 

 without such explanation, that part of the following description 

 which relates to the position of the dissepiment would be liable 

 to be misunderstood. I use the term dissepiment urn contrarinm 

 to express such dissepiments as have their tlat side facing the 

 stem, o)-, more properly speaking, contrary to the axis of the 

 tlower, without regard to the compression of the valves ; and dis- 

 sepiment uin parallelum, to denote such as are perpendicular to the 

 axis of the flower, having their edge opposed to the stem. The 

 distinction between the parallel and contrary dissepiment having 

 been hitherto so vague and uncertain, the adoption of the pre- 

 ceding mode of applying the terms will be found very advan- 

 tageous. In order to point out more clearly the inconvenience, 

 if not absurdity, of the manner in which these terms have been 

 hitherto applied, I need only mention, that in the greater part of 

 Scrophularinœ the dissepiment is said to be parallel, and contrary 

 in Pediculoris and some other genera, merely because the valves 

 happen to be more compressed : for the fact is, its position is 

 precisely similar. In all bilocular fruits having really a parallel 

 septum, the dehiscence takes place at the margin of the valves. 



LOPHOSPERMUM. 



Si/st. Linn. Didynamia Angiospermia. Prope Maurandiam. 



Ord. Nat. Scrophularinœ. Brown. Sect. 2. Antheris bilobis 

 muticis, seminibus testa coriaceo-spongiosâ corrugatâ v. reti- 

 culat)m scrobiculata prccditis. Antirrhinea?. Nob.* 



* I have found it necessary to modify in some degree the character of the section, 

 from observing the differences assumed by tlie seeds of certain species of Linaria. 



VOL. XV. 2 z Chak. 



