18 



ON FLOWEKS AND INSECTS. 



[LECT. 



the rudimentary representatives of parts, formerly more 

 largely developed, but which, having become useless, 

 have almost disappeared. 



In the Deadnettle, it would appear that the pistil 

 matures as early as the stamens, and that cross-fertili- 

 sation is attained by the relative position of the stigma, 

 which, as will be seen in the figure, hangs down below 



FIG. U. 



FIG. 15. 



FIG. 16. 



FIG. 14. Salvia offidnalis. Section of a young flower. 

 FIG. 15. Ditto, visited by a Bee. 

 FIG. 16. Ditto, older flower. 



the stamens ; so that a bee, bearing pollen on its back 

 from a previous visit to another flower, would touch 

 the pistil and transfer to it some of the pollen, before 

 coming in contact with the stamens. In other species 

 belonging to the same great group (Labiatse) as Lamiuni, 



