Seeds 



H3 



AVhen the two cotyledons are folded upon one another 

 leaving a hollow channel in which the radicle is placed (fig 



Fig. 285.— Pleurorhizal embryo of Lunarla. I. Transverse, 11. Longitudinal section 

 through the seed. 



Ill, 



Fig. 286.— Seed oi Neslea ^aniculata. I. Entire. 11., III. Sections in two different 

 directions, showing the notorhizal embryo. 



Fig. 287. — Seed oi Ertcca sativa. ^ I. Entire, II., 

 III. Sections in two different directions, showing 

 the orthoplozic embryo. 



Fig, 288.— Spiral embryo of 

 Bunias Erucago. 



Fig. 289. — Peripheric 

 endosperm surround- 

 ing the central em- 

 bryo in the Pansy. 



Fig. 2go. — Peripheric em- 

 bryo surrounding the 

 central endosperm in 

 JSlirabilis Jalapa. 



Fig. 291. — Lateral embryo 

 of MenispenmifU cana- 

 dense. 



287), the embryo is orthoplozic. When, lastly, the flat coty- 

 ledons are spirally coiled (fig, 288), the embryo is spiral. 



Again, in albuminous seeds, if the embryo is in the centre 



