CHAP. IV. 



LYTHRUM SALICAKIA. 

 r. 10. 



139 



Long- 



rtyled 



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 bo 

 carried to each stigma to ensrre full fertility. 



