116 



died) also was studied by Strasburger * who reported that it also 

 produced adventive embryos. The writer's observations confirm 

 this view. The seed splits first at the large end and then gradu- 

 ally down the edges. From this opening the seedlings grow, 

 usually more than one and frequently as many as eight. In 

 most cases one seedling is considerably in advance of the others. 

 An examination of the seed about the time of germination shows 

 that the nucellus is broken up into irregular pieces of variable 



Figure 2. Eight seedlings of the mango i^Mangifera iitdica) from the single seed, 

 showing the blocks of nucellus, each producing a seedling. 



sizes and that each piece produces a seedling. The writer ob- 

 served this same tendency for the nucellus to break into pieces in 

 the Citrus fruits also but does not know that each of these pieces 

 produces a seedling. The surfaces of these pieces are smooth 

 and apparently along well-defined cleavage planes. The writer 

 is unable to say whether the strongest embryo is from the fer- 

 tilized e:gg or not. 



* Loc. cit. 



