.262 NATURAL HISTORY OF PLANTS. 



tluitthc Portui^mcse introduced them from thence into their American 

 colonies ; tor that species is found in Asia with all the appearance 

 rather of a naturalized plant.' Now-a-days, more than ever, does E. 

 Bkown's opinion,'- as to the American origin of the Anonas cultivated 

 for their Iruits, seem to prevail. 



Cananya belongs to both the east and the west of America, 

 from the south of Mexico to the south of Brazil ; it is very abundant 

 in Guiana, the Antilles, and Peru. The sections of JJmna, Trigijneia 

 and V/iouasfnnn, also belong to this region. 



Besides Uvnria, Unona, and Anona, four other genera are common 

 to both hemispheres : — X/jlopia, Bocagea, Anaxagorea, and Pliceanthus. 

 Xglopia is distributed over the largest geographical area; it has 

 representatives in tropical Africa, Madagascar, India and the Indian 

 Archipelago, Polynesia, the Antilles, Gruiana, and as far as the south 

 of Brazil. The genus Bocagea consists of several Brazilian species 

 and all the Aljj/wnseas of tropical Asia ; a single species inhabits the 

 Comoro Isles. Phceanthus is disseminated over a wide area, one 

 species coming from Brazil, two from tropical Africa, and as many 

 from the Indian Archipelago. Anaxagorea is about equally divided 

 between the tropical regions of Asia and America. 



All the other AnonacecB belong to the Old World. Eupomatia is 

 essentially Australian. We only find Monodora and Hexalobus proper 

 in Madagascar and tropical Africa ; Eiiantia and CleldocMawys are 

 exclusively African. The following genera have as yet only been 

 observed in tropical Asia or the neighbouring parts of Oceania : — 

 SagercBa, SjjJtcerothalamus, Cgathocalgx, Disepalum, Atriitregia, Mitre- 

 pJiora, Orophcea ; while in both tropical Asia and tropical Africa we 

 find Popowia, Miliusa, Oxgmiira, Ariahotrys, besides two genera that 

 are, as we have seen, represented in America, Unona and Uvaria. 



The two last-named genera extend over the largest area from 

 north to south, both approaching the extreme limits of the zone 

 80° broad that the Anonacece occupy. Both commence in the 

 North of India and finish in Australia with the last representatives 

 of the order. The genus Uvaria goes as far north as China and, by 

 Asimuia, as the United States ; and as far south as the boun- 

 dary line of the Anonacets at the southernmost point of Australia. 



> A. DC, Qeogr. Bot., 860. 2 Congo, 6 ; Misc. Works, ed. Benn., i. 105. 



