ALISMA. EMBRYO. 135 



One of the sections will probably be found to 

 include 



1. The Embryo-sac, in which are contained 



2. The Embryo, with a very short suspensor, the 

 basal cell of which, is greatly enlarged. 



3. The Endosperm, a tissue which lines the embryo- 

 sac, and varies in appearance according to the stage of 

 development of the ovary. 



