THE DICOTYLEDONES 



1877 



Fig. 1785. — Cyclamen pollination, showing the change of position of 

 the stigma in relation to the direction of pollen drop. (After 

 Kniith.) 



The Lysimachieae contain a number of genera, several of which are 

 represented in the British Flora. Lysitnachia with over 100 species is 

 widely distributed in temperate regions and in the mountains of the tropics. 

 The flowers (Fig. 1786) are mostly yellow in colour and are visited by 

 insects for their pollen, which is either collected or eaten by bees. Anagallis 

 with twenty-four species is almost cosmopolitan. In A. arvensis the 



Fig. 1786. — Lysiinac/iiti [miictata. 

 Flowering shoot. 



flowers open earlv in the morning in sunny weather; the five divergent 

 anthers become covered with discharged pollen and the style is bent in 

 such a way that the stigma must come into contact with any insect visiting 

 the flower. Later in the day the flower closes, bringing the anthers into 



