MR. BENTHAM ON LOGAKIACE^. 61 



Logania and Bttddleia, Either Logania must be transferred to 

 Scrophularinecs and a new name be given to the free Mubiacecd^ or 



allies 



I 



course 



irre 



can thus be given to the two orders. The 

 personate corolla, sometimes indicated only by its bilabiate aesti- 

 vation or by the absence of one or of three of the stamens, and 



mui 



be mdicative of BcrojyhularinecB^ and any trace of stipules accom- 

 panied by a regular corolla isomerous with the stamens and quin- 



cuncial 



It is true, there 



would even then remain some intermediate genera among Scopa- 

 needy where the quincuncial passes gradually into the bilabiate 



irular 



01 the stipular line and the tendency to alternation in the leaves 

 Would leave these among Scropliularinece. So also Microcarpcea 

 and Bryodes^ which I had included among Buddleiece, would, not- 

 withstanding the presence of the connecting line and a general 

 resemblance to some MitrasacmeSy be rejected from Loganiacem on 

 accoxmt of their diandrous or didynamous flowers. 



J-he approach to ApocynecD is indicated in Geniostoma by the 

 contorted aestivation of the corolla, and in Mitrasacme by .the 

 partial separation of the ovaries, whilst the styles are joined at 

 the apex; but, as in neither instance are the two characters com- 

 l>ined, there is little hesitation as to their retention within the 



line 



f-^r ^^- -^H 



I 



s 



n 



\ 



formerly 



Gentianece, but have been judiciously rejected by the able mono- 

 graphist of that order on account of their axile placentation, 

 besides that they want the bitter principle so universal in Gen- 

 tianece. It is true that the BiiUacecB also include a few genera 

 (such as Gardenia, Amaioua, &c.) where the placentation is pa- 

 rietal, as an exception to the almost universal central placentation 

 of the order ; that this exceptional character shows itself occa- 

 sionally also in the corresponding genus Fagraa, and that it cannot 

 in either case be treated as even of tribual importance ; yet here, 

 among free capsular MonopetaU, we must give it a much higher 

 value, in order to find a tangible character for the definition of 

 such an eminently natural family as the Gentianece. 



Although aestivation of the corolla does not in Loganiacece any 

 niore than in Buhiaiece afford good tnbual characters, yet in both 

 instances it is a convenient one for the subdivision of the tribes. 



■:^i^^A:: 



