THE MOXOCOTYLEDONES 



1971 



Fig. 1898. — Zostera nana. 

 Spathe with spadi\ 

 emerging. Carpels with 

 two stigmas, stamens 

 of two separate half- 

 anthers. Each stamen 

 and the opposite car- 

 pel form one flower. 

 (After Soaerby.) 



A \ 





j^---*^^^ Wj 



s, 





Fig. 1899. — Zostera marina. Filamentous 

 pollen grains. 



Fig. 1900. — ZannicheUia polycarpa. A, Longi- 

 tudinal section of fruit with embryo. 

 Plumule on the right and trebly folded 

 cotyledon on the left. Zostera marina. 

 B, Longitudinal section of fruit. On left 

 the hypocotyl with primary root below. 

 On right the vermiform cotyledon. 

 {After Raunkiaer.) 



