45a 



BOTANT. 



m 



h,M 



F^ 



Fig. 332. 



Fig. 332.— Germination of Indian corn. /., 77., 777., 

 Buccfsaive stages. A and B, front and side views of 

 a ^eparated embryo. In the flgnres, w, tlie primary 

 root ; we, its root-elieath ; w'^ w", adventitious roots ; 

 w"', lateral roots sprinqiing from the main root ; e, 

 part of sepd filled wfth endosperm ; so, cotyledon ; >■, 

 Its open margins ; *, the plumule ; 4, 6', 6", leaves of 

 young plant ; I. fragment of wall of ovary. Natural 

 size.— After Sachs. 



Fig. 33.S.— Germination of the Date (PAosnto dacty- 

 lif&ra). 7, transverse section of seed ; c. embryo ; e, 

 endosperm. 77, 777, sections of germinating seeds; 

 c, apex of cotyledon developing into an absorbing or- 

 gan ; 8t, stalk of cotyledon : «, sheath of cotyledon ; 

 b\ 6", leaves ; w, root ; w', lateral roots ; A, root-cap. 

 IV., young plant, natural size, the lettering as in in. 

 A, section of IV. at x — as; B, section at x — y, the 

 lettering as in 777 C, section at e — s, the lettenng as 

 in 777.— After Sachs. 



