54 



BOTANY 



i'AKT II 



of each pollen-sac is united into a pollinium, the stalk of which is 

 attached to a glandular swelling (adhesive disc) of the angular 

 stigma. 



\ 



These adhesivr discs alternate with the stamen- so that the two jiollinia attached 

 to each disc belong to the halves of two adjoining stamens. Visiting insects 

 iviiiove, as in the Orehidaceae, the jiollinia and rarry them to another flower 

 (Fig. 727). 



IMI-OKTAM (IKXKKA. Vincetoxicum ojficiiuile (Fig. 7->) is a European herb 



