508 



LENTIBULARIACE^E. 



PJNGUICULA LURITANICA (Pale Butterworf). 



alpina (Alpine Butterwort) is about the size of P. Lusi- 

 tdnica ; the flower-stalks are smooth, and the flowers 

 yellowish ; it is very rare, being found only in bogs in 

 Scotland and Ireland. 



2. UTRICULARIA (Bladderworl). 



1. U. vulgdris (Common Bladderwort). Submersed. 

 Leaves divided into numerous hair-like segments, and 

 bearing small air-bladders ; lips of the corolla about equal 

 in length ; spur conical. Ditches and deep pools, not 



