452 



BOTANY. 



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

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

 a separated embryo. In the figures, w, the primary 

 root ; ws, its root-sheath ; w', w", adventitious roots ; 

 w'", lateral roots springing from the main root ; f, 

 part of seed filled with endosperm ; ec, cotyledon ; r, 

 its open margins ; X% the plumule ; 6, V, b", leaves of 

 young plant ; /, fragment of wall of ovary. Natural 

 Bize.-Af ter Sachs. 



Fig. 333.-Germinatioii of the Date (Phoenix dacty- 

 lifera). I., transverse section of seed ; c. embryo ; , 

 endosperm. 77., 777, sections of germinating seeds; 

 c, apex of cotyledon developing into an absorbing or- 

 gan ; st, stalk of cotyledon : *, sheath of cotyledon ; 

 b', b", leaves ; w, root ; w', lateral roots ; h, root-cap. 

 71'., young plant, natural size, the lettering as In 777. 

 A. section of IV. at a; w; B, section at x //. the 

 lettering as in 777. C, section at * , the lettering as 

 in 777.-After Sachs. 



