GRAMINE^. CEREALS 



48s 



from those which were easily seen in the embryo within the 

 seed. 



Soon afterwards more leaves show themselves, as at B, Fig. 

 152, and often about the same time the terminal bud, which was 



A B C 



Fig. 152. — A^ Young barley plant, showing 'seminal roots, c First sheathing leaf ; 

 / blade of first green leaf. 



B^ Young barley plant, a later stage of ^. a ^ Seminal ' roots ; « first node of 

 stem. 



C, Longitudinal section of B zt n. c Sheathing leaf; d stem ; a terminal bud ; h lateral 

 bud (first ' tiller ') ; ^ adventitious root forming. 



originally within the grain, is carried up to near the surface 

 of the ground by the growth of the first internode, the second 

 and succeeding internodes remaining undeveloped for some 

 time. When the primary bud has reached this position rapid 

 formation of lateral buds takes place in the axils of its leaves. 



