GROUP IV. — PHANEROGAMIA. 



443 



In those plants which have a suspensor which contributes to 

 the embryo, the embryo- cell is not a complete sphere. It divides, 



Fig. 286.— Embryogeny of Dicotyledons as represented by Cnpaella Burm-Pastoria (dia- 

 grammatic, after Goebel and Hanstein). A-D Successive 8tfl,ge8 : susp. suspensor; emb. 

 embryo ; 1-1, 2-2, octant-walls ; o lowest cell of suspensor, dividing in B to form the hypo- 

 physial cell h; in C the hypophysial cell has divided into two, h, and h„ the former con. 

 stituting the periblem, the latter the dermatogen, of the growing-point of the primary 

 root ; in D, h , has undergone a periclinal division to form the primitive root-cap : d derma- 

 togen ; c periblem ; pi. plerome ; cot. cotyledons, between which lies the growing-point of 

 the primary stem. 



as a rule, into two by a longitudinal wall, then transversely, and 

 then in a plane to both the preceding, into octants ; but while 



