NATURAL ORDERS. 105 



number of spocios in the lower latitudes, and several within 

 the tropics. 



I now proceed to make some observations on the orders 

 above enumerated, and on such of the other families, 

 included in the collection, as present anything remarkable, 

 either in their geographical distribution, or in their 

 structure ; more especially where the latter establishes or 

 suggests new^ affinities ; and I shall take them nearly in 

 the same order as that followed in the botanical appendix 

 to Captain Flinders's Voyage. 



ANONACEJE. Only three species of this family are 

 contained in the collection. One of these is Anona Scnrqa- 

 lensis, of which the genus has been considered doubtful, 

 even by M. Dunal in his late valuable Monograph of the 

 order.^ That it really beh:)ngs to Anona, however, api)ears 

 from the specimen with ripe fruit preserved in the collec- 

 tion. It is remarkable therefore as the only species of this 

 genus yet known which is not a native of equinoctial 

 America ; for Anona Asiafica, of which Linnaeus had no 

 specimen in his herbarium when he first proposed it under 

 this name, according to the original synonym, is nothing 

 more than Anona muricafa : and A, obhmfiora, supposed 

 by M. Tussac^ to have been introduced into the American 

 Islands from Asia, does not appear to differ from A. 

 mucosa of Jacquin, wdiich is known to be a native of Martinica. 



The second plant of this order in the collection is very 

 nearly related to F'qoer yEthiojncum of the shops, the 

 TJnona jEtldojjica, and perhaps also TJnona aromatica of 

 Dunal '} these with several plants already published, form 

 a genus, which, like Anona, is connnon to America and 

 Africa, but of which no species has yet been observed in Asia. 



Of MALPIGHIACE^, an order chiefly belonging to 

 equinoctial America, there are also three species I'rom 

 Congo. 



One of these is Banisferia Lcona, first described, from [t26 



^ Movogr. de lafanulle des Anonucces, j). 70. 



" Flore dcs Antilles, 1, p. 193. ^ Anonar , p. 113 c( 112. 



