THE WHITE LILY 



183 



The nucellus of the Lily does not disappear, but 

 encloses the embryo-sac until after fertilisation (see 

 Fig. 83). 



FIG. 83. Longitudinal section of ovule of Lily. /, funicle ; 

 r, raphe ; cA, chalaza ; in ly inner integument ; in 2 , outer 

 integument ; m, micropyle ; n, nucellus. Within the 

 nucellus (n) is seen the long pear - shaped embryo - sac 

 containing egg - apparatus, polar nuclei with vacuole 

 between them, and antipodal cells. Magnified B'2 

 diameters. (R. S.) 



e. Pollination and Fertilisation 



The pollination of Lilies is carried on by moths and 

 butterflies, which come in search of the honey secreted 

 by the nectaries on the perianth. The flowers are made 



