Plant Distribution in South Africa. 297 
region such as the Natal coast-belt, as succession advances, the vegetation 
becomes more and more tropical, so that, while all the earlier stages of the 
succession in this area are widespread over the rest of Natal or farther, 
there are some 700 tropical or endemic species which are more or less con- 
fined to the climax or subclimax forest or scrub of the Natal coast-belt, and 
are thus very restricted in their distribution, so far as South Africa is 
concerned. 
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