CHAP. IV. LYTHRUM SALICAEIA. 



Fig. 10. 



139 



Micl- 

 Btyled 



Short- 

 styled. 



Diagram of the flowers of the three forms of Lythrum salicaria, in 

 their natural position, with the petals and calyx removed on the near 

 side : enlarged six times. 



The dotted lines with the arrows show the directions in which 

 pollen must be carried to each stigma to ensure full fertility. 



