TYPES OF GERMINATION 



379 



freed from the testa, which is carried up, sticking on to 

 one or both. In most cases it is soon shaken oii by 

 their further growth, but occasionally seedlings are 



1 cot. 

 end 



Fig. 63. — ^Types of germination. A, endospermic seed with epigeal 

 cotyledons. B, uon-endospermic seed with hypogeal cotyledons. 

 C, endospermic seed with hypogeal cotyledons, which remains 

 embedded in the endosperm and acts as a sucker ; end., endosperm ; 

 cot., cotyledon ; ep., epicotyl ; rad., radicle. 



handicapped, or even killed from this cause. In the 

 marrow a projection of tissue is developed from the 

 base of the hypocotyl which holds down one side of 

 the testa (the seed being here flattened and the testa 



