— 159 — 



make a careful cytological investigation in order to decide the 

 character of the ES. 



Fig. VIII. H. aurantiacum, an epidermis eell from the nucellus becomes an embryo 

 sac and encroaches upon the typical embryo sac in A and B, in C between 

 the second and third cell of the tetrad; in B> a dwarfed nucleus. 



