466 APPENDIX. No. V. 



which M. de Jussieu has lately suggested may belong to Viniferas,* is too 

 imperfectly known to admit of its place being determined. 



III. In the third part of my subject I am to compare the vegetation of the 

 line of the river Congo with that of other equinoctial counti'ies, and with the 

 various parts of the continent of Africa and its adjoining Islands. 



The first comparison to be made, is obviously with the other parts of the 

 West coast of equinoctial Africa. 



The most important materials from this coast to which I have had access 

 are contained in the herbarium of Sir Joseph Banks, and consist chiefly of the 

 collections of Smeathnian from Sierra Leone, of Brass from Cape Coast (Cabo 

 Corso), and the greater part of the much more numerous discoveries of Pro- 

 fessor Afzelius already referred to. Besides these, there are a few less extensive 

 collections in the same herbai'ium, especially one from the banks of the 

 Gambia, made by Mr. Park in returning from his first journey into the 

 interior; and a few remarkable species brought from Suconda and other 

 points in the vicinity of Cape Coast, by Mr. Hove. The pubhshed plants 

 from the west coast of Africa are to be found in the splendid and interesting 

 Flore d'Oware et Benin of the Baron de Beauvois ; in the earlier volumes of 

 the Botanical Dictionaiy of the Encyclopedie Methodique by M. Lamarck, 

 chiefly from Sierra Leone and Senegal ; in the different volumes of Willde- 

 now's Species Plantarum from Iscrt ; in Vahl's Enumeratio Plantarum from 

 Thonning ; a few from Senegal in the Genera Plantarum of M. de Jussieu ; 

 and from Sierra Leone in a memoir on certain genera of llubiaccffi by M. de 

 Candolle, in the Annales du Museum d'Histoire Naturelle. Many remarkable 

 plants are also mentioned in Adanson's Account of Senegal, and in Isert's 

 Travels in Guinea. 



On comparing Professor Smith's herbarium with these materials, it appears 

 that from the river Senegal in about 16° N. lat. to the Congo which is in 

 upwards of (>^ S. lat. there is a remarkable uniformity in the vegetation, not only 

 as to the principal natural orders and genera, but even to a considerable extent 

 in the species of which it consists. Upwards of one third part of the plants in 

 the collection from Congo had been previously observed on other parts of the 

 coast, though of these the greater part are yet unpublished. 



* Loc- cit. 



