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 440 —467 



CHAPTER XXXI 



a chapter on vivifary 



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 468—473 



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 



