ff> o e t e I 5 i a 



ginella embryo very early comes to 

 occupy a terminal position opposite the 

 suspensor. The stem apex originates 

 terminally, but is forced into a lateral 

 position by the growth of the cotyle- 

 don. The root originates in the tissue 

 adjoining the suspensor opposite the 

 stem. In the Monocots this displace- 

 ment has become a constant character, 

 the terminal position of the cotyledon 

 being apparent from the earliest divi- 

 sions of the embryonal cell. 



The transition from the monocoty- 

 ledonous embryo to the dicotyledonous 

 embryo, as illustrated by Nelumbo, has 

 already been indicated. It is the result 

 of a division of the cotyledon primor- 

 dium followed by a further displace- 

 ment of the primordia. 



The remarkable change in the em- 

 bryonic conditions instituted by the 

 seed-habit readily accounts for the rapid 



