128 



On Flowers and Insects. 



branches of the stigma are so arranged (fig. 31^ 

 that the plant cannot fertilise itself, the petals are 

 large and conspicuous, so that the plant is visited 



Fig. 29. COMMON MALLOW (Malva sylvestris}. 



Fig. 30. DWARF MALLOW (Malva rotundifolia}. 



by numerous insects; while in the Dwarf Mallow 

 (fig. 32), the flowers of which are comparatively 

 small and rarely visited by insects, the branches of 

 the stigma are elongated, and twine themselves 



