52 APPENDIX. 



that it offers still less reason for being retained in Scopolia. The 



length 



urceolate 



with 



lobes, slightly imbricated in sestivation. In Anisodus^ on the 

 contrary, the calyx is extremely thick and fleshy in texture, 

 broad, tubular^ and somewhat ventricose, with ten thict, promi- 

 nent nervures^ and five obtuse teeth : this does not. much enlarge, 

 but it grows thick and rigid^ assumes a very reticulated or can- 

 cellated appearance, and encloses the large oval berry^ when its 

 ten prominent thick nervures become ligneous ; the corolla does 

 not much exceed the calyx in length, is thick and fleshy in sub- 

 stance, broadly campanulate, with a border of five large rounded 

 lobes, which overlap one another at base, and are deeply imbri- 

 cated in sestivation, one lobe being larger and more interior than 

 the others. In ScopoUa the testa is tuberculosely rugous, in 

 Anisodus it is smooth and slightly punctulated : in the former 

 genus the stigma is capitate and obsoletely 2-lobedj the external 

 surface being covered with short articulated hairs or papillse ; in 

 the latter genus it is somewhat compressed and distinctly bi- 

 lobed, with a simply rugous stigmatic surface : in ScopoUa, the 

 corolla is quite glabrous on both sides, as are also the filaments ; 

 in Anisodus, the inner surface is quite woolly, and the filaments 

 are pubescent when in bud; in the former the fruit is quite cap- 

 sular, thin in texture^ 5 -grooved with a torulose surface; its oper- 

 culuni is simple, soon falls off, and its seeds are affixed on an in- 

 conspicuous adnate placenta, attached to the dissepiment ; in the 

 latter genus the fruit is oval, smooth and thick, with a fleshy 

 epicarp that hardens on the pericarp like an exsuccous berry, 

 and the operculum only manifests itseK after the decay of the 

 dry fleshy covering ; the seeds are aggregated upon a very large, 

 globose, camose, favose placenta, adnate to the dissepiment, 

 and are half imbedded in its fleshy substance. In fine, there are 

 more manifest generic distinctions between ScopoUa and Ani- 

 sodus, than between ScopoUa and Hyoscyamus. In my enume- 

 ration of the genera composing my tribe HyoscyamecB {huj. op. 

 i. p. 166), Anisodus was not included, because I had not then 

 observed the operculiform dehiscence of its fruit, a character that 

 had not been previously recorded by any observer ; but I rectified 

 this subsequently [huj. vol App. p. 17). 



M. DunaVs tribe of the Nicotianeie consists of the genera 

 Nicotiana, Lehmannia, Petunia, Leptophragma and Vestia : the 

 latter genus certainly bears no affinity towards the others : it 

 was placed by me upon more solid grounds near Fabiana, in the 

 true Solamcece, because of the valvate aestivation of its corolla, 

 and of the resemblance in the structure of its fruit and seed : 



