Chapter V 



-89- 



Types of Areas 



Africa, Madagascar, and Australia. There are not many examples of 

 this type in the plant kingdom, particularly among the Angiospermae; 

 nevertheless, there are a few characteristic areas, chiefly for Africa, 

 Madagascar, and Australia. As examples we may cite Adansonia, 

 Keratidrenia, Rulingia, and Athrixia. 



Fig. i6. — Neotropical discontinuous area of the Vochy- 

 siaceae (in Africa one genus, Erismadelphus). (After Hutch- 

 inson). 



lo. South Pacific Type. — Here are included the areas of genera and 

 species common to South America, Pacific islands. New Zealand, and 

 Australia, or found in New Zealand and not in Australia. Among such 

 areas are: Jovellana: South America — New Zealand; Pernettya, Hebe, 

 Nolhofagus: South America — Australia, New Zealand; Drimys: South 

 America — Australia and Polynesia. 



Fig. 17. — South-Pacific discontinuous area of the genus 

 Jovellana {Scro phulariaceae) . (After Hutchinson). 



II. South Atlantic Type. — The discontinuity of areas of many 

 genera found in South America and also in Africa and Madagascar was 



