APPENDIX. No. V. 425 



II. The NATURAL ORDERS of which die hcrbaiium Irom Conn-o 

 consists, are 87 in number; besides a very few genera not referable to any 

 families yet established. IVIore than half the species, however, belong to nine 

 orders, namely, to Filkes, Graminecv, Cyperaceae, Convolvulacea;, Rubiacecv, 

 Composltw, Malvacecc, Leguminosac, and Euphorbiacccc ; all of which have 

 their greatest number of species 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 tlie collection, as present any 

 thing remarkable, either in their geographical distribution, or in their struc- 

 ture ; more especially where the latter establishes or suggests new affinities ; 

 and I shall take them neai'lv in the same order, as tiiat followed in the 

 botanical appendix to Captain Flinders's Voyage. 



ANONACE./E. Only three species of this family are contained in the col- 

 lection. One of these is Anona senegalensis, of which the genus has been 

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

 order.* That it really belongs to Anona, however, appears from the specimen 

 with ripe fruit preserved in the collection. It is remarkable therefore as the 

 only species of this genus yet known which is not a native of equinoctial 

 America : for Anona asiatica, of which Liimanis had no specimen in his her- 

 barium, when he first proposed it under this name, according to the original 

 S)Tionyms, is nothing more than Anona muricata: and A. obtusiflora, supposed 

 by M. Tussac-j- to have been introduced into the American Islands from Asia, 

 does not appear to differ from A. mucosa of Jacquin, which is known to be a 

 native of Martinica. 



The second plant of this order in the collection is very nearly related to 

 Piper JEtliiopicum of the shops, the Unona aethiopica, and perhaps also 

 Unona aromatica of Dunal ■.\ these with several other plants already published, 

 form a genus, which, like Anona, is common to America and Africa, but of 

 which no species has yet been observed in Asia. 



Of MALPIGHIACEJ5, an order chiefly belonging to equinoctial 

 America, there are also three species from Congo. 



* Monogr. delafamitle des ^nonacies, p. 76. 



t Flore des Jnlilles, i.p. 193. * Jnimac. p. l\3 el 112. 



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