CONTENTS xxv 



CHAPTER XXX 



THE VIVIPAROUS MANGROVES OF FIJI 



RHIZOPHORA AND BRUGUIERA 



Rhizophora. Represented by Rhizophora mucronata, Rhizophora mangle, and 

 the Selala, a seedless intermediate form. Their mode of association and 

 characters. The relation of the Selala. Polyembryony. The history of 

 the plant between the fertilisation of the ovule and the detachment of the 

 seedling. Absence of a rest period. Mode of detachment of the seedling. 

 Capacity for dispersal by the currents. Bruguiera. The mode of dis- 

 persal. Peculiar method of fertilisation. Length of period between 

 fertilisation and the detachment of the seedling. Mode of detachment of 

 the seedling. Summary Pages 440467 



CHAPTER XXXI 



A CHAPTER ON VIVIPARY 



The significance of vivipary. The scale of germinative capacity. A lost habit 

 with many inland plants. The views of Goebel. The shrinking in the 

 course of ages of tropical swamp areas. The variation in the structures 

 concerned with vivipary. Abnormal vivipary. Summary. 



Pages 468473 



CHAPTER XXXII 



THE WEST COAST OF SOUTH AMERICA 



The littoral floras of the West Coast of South America. The Convolvulus 

 soldanella zone of Southern Chile. The plantless or desert zone of 

 Northern Chile. The Sesuvium zone of Peru. The Mangrove zone of 

 Ecuador and Colombia. The two varieties of Rhizophora mangle, the 

 " mangle chico " and the " mangle grande." The floating vegetable drift 

 of the Guayaquil River. The Humboldt current and the climate of the 

 West Coast of South America. The advance northward of the arid 

 climatic conditions of the Peruvian sea-border. The retreat of the man- 

 groves. Evidence of ancient coral reefs on the coast of Peru. The shore 

 plants and stranded seed-drift of the Panama Isthmus. Summary. 



Pages 474 501 



