466 APPENDIX. No. V. 
which M. de Jussieu has lately suggested may belong to Vinifere,* is too 
mperfectly 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 countries, and with the 
various parts of the continent of Africa and its adjoining [slands. 
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 Smeathman 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 herbarium, 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 published plants 
from the west coast of Africa are to be found in the splendid and interesting 
Flore @Oware et Benin of the Baron de Beauvois; in the earlier volumes of 
the Botanical Dictionary of the Eneyclopedie Methodique by M. Lamarck, 
chiefly from Sierra Leone and Senegal; in the different volumes of Willde- 
now’s Species Plantarum from Isert; m Vahl’s EKnumeratio 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 Rubiacex 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 6° S, lat. there is a remarkable uniformity im 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coast, though of these the greater part are yet unpublished.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 
