APPENDIX. No. V. ATT 
families consist: and there are even about forty species common to these 
distant regions. 
To the vegetation of Equinoctial America it has certainly much'less affinity. 
Several genera, however, which have not yet been observed in India or New 
Holland, are common to this part of Africa and America:* and there are 
upwards of thirty species in the Congo herbarium, which are also natives of 
the opposite coasts of Brazil and Guiana. 
As the identity of species, especially of the Dicotyledonous division, 
common to equinoctial America and other intratropical countries, has often 
been questioned, I have subjoined two lists of plants included in the Congo 
herbarium, of which the first consists of such species as are common to Ame- 
rica and India: and the second, of such as are found in America only. 
I have given also a third list, of species common to Congo and India, or its 
Islands, but which have not been observed in America: 
And a fourth is added, consisting of doubtful plants, to which T have, in the 
mean time, applied the names of those species they most nearly resemble, and 
to which they may really belong, without, however, considering their identity 
as determined. 
I. List of Plants common to Equinoctial Africa, America, and Asia. 
Gleichenia Hermanni Prodr. Flor. ) Boerhaavia mutabilis Prod?. Flor. Nov. 
Nov. Holl. Hoil. 
Mertensia dichotoma Willd. J Ipomcea pes capre IVob. 
Agrostis Virginica L. Convolvoulus pes capre L. cane 
Cyperus articulatus L. } a — brasiliensis L. 
niloticus Vahl. J aa Ipomcea pentaphylla Jacqu. 
Lipocarpha argentea Nob. } Scoparia dulcis L. 
Hypelyptum argenteum Vahl. Heliotropium indicum L. 
Eleocharis capitata Prod.Il.Nov. Holl. Sphenoclea zeylanica Gert. 
Fuirena umbellata L. il. Ageratum conyzoides L. 
Pistia Stratiotes L. 
* Namely, Elwis Jacqu. Rivina Z. Telanthera Vod, (Alternanthere pentandre.) 
Alchornea Sw. Blechum Predr. Flor. Nov. Holl. (Blechi sp. Juss.) Schwenckia L. 
Hyptis Jacqu. Vandellia Z. Annona Z. Banisteria Nob. (Banisteriw sp. Z.) Paullinia 
Juss. (Paulliniea sp. Z.) Vismia Ruiz, et Pav. Conocarpus ZL. Legnotis Sw. (Cassipourea 
Aull.) Chailletia Decand, 
