

X Elodea 



«^z:^x 



Humulus 



M M 

 ■m ID mm 



w 



Rumex 



Ve^llisneria. 



Ve.llisnir>m Mele^ndrmm 



Mclexndpium 

 Pollen Ovule 



Fig. 123. 

 Maturation groups of several dioecious plants. (After Belaf.) 



