200 SOUTH AFRICAN FLOWERING PLANTS. 



The structure of the flower thus shows its agree- 

 ment with Utrwidaria, but the foliage is very different, 

 having become modified in a different way, though both 

 genera have doubtless descended from some common 

 ancestor. 



General Dcsci'vption of tlic Bladdcrwort Family. 



Herhs — Marsh or aquatic plants. 



Leaves — Crowded on the ground or submerged and 

 dissected, often with traps or glands for securing insect 

 prey, etc. 



Flowers — Sepals, 2- or 5-parted ; corolla, 2 -lipped, 

 spurred or pouched ; stamens, 2, adherent to the corolla ; 

 anthers, 1-celled ; ovary, 1-celled. 



Fruit — Capsule. 



Acanthacese. 



The Acanthus Family. 



This is a large order, mainly in the hot regions of the 

 world, becoming scarcer in the cooler, temperate regions 

 of both north and south hemispheres. There are in all 

 about 1350 species of 120 genera in 5 tribes. South 

 Africa has 23 genera. 



Justic'ia. — Taking this as a type, the species are herbs 

 and shrubs, often with handsome flowers, many being 



