CEUCIFER^ 



91 



occupy the whole space, are folded and arranged one 

 over the other, like two sheets of notepaper, as shown 



Fig. 51, — Raxilumus satims. Seedling. Pig. 52. — Jtaplmnus sativus. Germinat- 

 Nat. size. ing seedling, x 2, showing the coty- 



ledons still folded. 



in Fig. 53, B-D, the radicle being folded along the 

 edge. Fig. D represents the embryo a little opened 



Fig. 53. — Raphanus sativus. A, outline of seed, x 4 ; m, micropyle ; h, hilum. 

 B, embryo taken from the seed, x 4. 0, embryo, x 4, vertical section. JJ, 

 embryo, seen from the side, x 4 ; o. c, outer cotyledon ; I'.c, inner cotyledon ; 

 y, radicle ; t, testa. 



out, and Fig. C a section showing the radicle and 

 the outer and inner cotyledons. To this folding the 

 emargination is due. If a piece of paper be taken. 



