386 J. w. BEWs. 



Table III. — South-eastern Region, 



It must be kept in mind that the Natal coast belt is 

 included in this analysis by Bolus, and a great many species 

 of such orders as Acanthaceas, Gramiuefe, Euphor- 

 biacete, Rubiace^, Leguminosse are confined to the 

 Natal coast belt, so far as South Africa is concerned. If 

 the coast belt were excluded, the difference between it and 

 the rest of the south-eastern region would be seen to be 

 much greater. As it is, the differences in position of such 

 families as Compositge, Acanthacea3, Crassulacese, 

 Sterculiaceas, Aizoacefe, Iridticeae, Urticacea3, etc., 

 in the two lists are sufficiently striking. At the same time, 

 of course, the whole south-eastern region partakes of the 

 subtropical character of the coast belt. The midlands of 

 Natal have much in common Avith the coast belt, the 

 mountain ranges not so much. 



IV. SUCCESSIONAL TENDENCIES. 



When we investigate the tioristic composition in relation 

 to the different stages of the plant succession, certain very 

 interesting facts are brought to light. In some of the 

 earlier stages the edaphic conditions are more important 

 than the climatic. Water and marsh plants commonly have 



