156 PLANTAGO. [chap. v. 



Plantago media is also proterogynous, though less 

 so than P. lanceolata. It is more frequently visited 

 by insects, having a slight scent, and stamens with 

 pink filaments. Nevertheless, it appears to be gene- 

 rally fertilised by wind. 



According to Darwin, several North American 

 species are dimorphous {Proc. Linn. Soc. v. vi., 1862, 

 p. 95 ), and Kuhn states that some have also cleisto- 

 gamous flowers. 



