430 APPENDIX. No. V. 



Congo, seven of whicli belong to Acacia, as it is at present constituted : the 

 eifhth is a sensitive aculeaterl Mimosa very nearly allied to ]\I. aspera of the 

 West Indies, as well as to JM. canescens of Wdldenow, found by Isert in 

 Guinea ; and perhaps is not different from the species mentioned by Adanson 

 as being common on the banks of the Senegal. 



Of the second order, C.ESALPINEiE, the collection contains I!) species, 

 among -which there are four unpublished genera. One of these is Erythro- 

 phkum of Afzelius, the Red Water Tree of Sierra Leone ; another species of 

 which genus is the ordeal plant, or Cassa of the natives of Congo. GuUandina 

 Bonduc and Cassia occidentalis, are also in the herbarium ; the former, I 

 beUeve, is unquestionably common to India and ^America; whether Cassia 

 occidentalis be really a native of India and equinoctial Africa, in both of which 

 it is now at least naturalized, is perhaps doubtful. 



Among PAPILIONACE-^D, wliich constitute the principal part of Legu- 

 minosEB in the collection, there is only one jilant with stamina entirely distinct. 

 This decandrous plant forms a genus very different from any yet established, 

 but to which Podalyria hractcata of Roxburgh * belongs. 



The genera composing Papilionaceas on the banks of the Congo have, upon 

 the whole, a much nearer relation to those of India than of equinoctial 

 America. To tliis, however, there is cne remarkable exception. For of the 

 only two species of Ptcrocarpus in the collection, one is hardly to be dis- 

 tinguished from P. Ecastopliyllum, unless by the want of the short acumen 

 existing in the plant of Jamaica- The second agrees entirely with Linneus's 

 original specimen of P. lunatus from Surinam, and seems to be not uncommon 

 on the west coast of equinoctial Africa; having been observed by Professor 

 Afzelius at Sierra Leone, and probably by Isert in Guinea :-f- while no species 

 of Pterocai'pus related to either of these has hitherto been observed in India. 

 On the other hand Abnis precatorlus and Hedysarvm trijlorum, both of 

 which occur in the collection, are common to equinoctial Asia and America. 



TEREBINTACE.E, as ^ven by M. de Jussieu, appears to be made up of 

 several orders nearly related to each other, and of certain genera having but 

 little affinity to any of them. Of this, indeed, the illustrious author of the 



* Coromand. Plants, 3 lab. + Heise iiaek Guinea, p. 116. 



