BLADDER-WORT. 87 



laria vulgaris}. The submerged leaves are thread-like, 

 as is so usual with those of aquatic plants, owing to 

 the greater ease with which they can thus be brought 



Fig. 38. 



Bladder-wort ( Utricularia vulgaris 



into contact with fresh supplies of water. The purple 

 flower-stalks rise above the surface, and bear bloated 

 looking yellow flowers, having an upper and a lower 

 lip, the former being further adorned with purplish 

 veins. The common as well as the scientific name of 



