FIGURES ILLUSTRATING THE DEVELOPMENT OF 

 THE SEED AND THE GERMINATING PROCESS 

 OF RHIZOPHORA AND BRUGUIERA 



(Natural size. Drawn for convenience of description in the erect position.) 



1. Rhizophora mucronata . Fruit 3 g lines (8-9 mm.) high, six to seven weeks after 



fertilisation. The micropyle is but slightly dilated, and is 

 occupied by a small plug of endosperm. 



2. ,, ,, Seed of fruit represented in Fig. I. 



3. ,, ,, Fruit 5 lines (12 mm.) high, eight to nine weeks after fertilis- 



ation. Germination is about to begin. A large plug of 

 endosperm now protrudes through the dilated micropyle, 

 but still covers the lengthening hypocotyl. 



4. i 



5 / 



Seed of fruit represented in Fig. 3. In Fig. 4 the plug of 

 endosperm is shown on the upper end of the seed ; whilst in 

 Fig. 5 it has been removed, exposing the tip of the 

 hypocotyl. 



Fruit 7| lines (18 mm.) high, eleven to twelve weeks after 

 fertilisation. 



Fruit, seventeen or eighteen weeks after fertilisation. 



Full-grown fruit with upper portion of seedling just before 

 detachment from the tree. The long tapering plumule is 

 here inclosed in the cotyledonary body. The * indicates 

 the point of detachment of the seedling. 



The cotyledonary body of Fig. 8. 



f Illustrating different stages in the development of the 

 | plumule and of the neck of the cotyledonary body resulting 

 1 finally in the expulsion of the plumular end of the seedling 

 ^ from the fruit cavity as in Fig. 8. (See page 458.) 



10 



Fruit with two seeds. 



