192 SOUTH AFRICAN FLOWERING PLANTS. 



S. i^iodoriucum is a common wayside species about 

 Cape Town, recognizable by its thorny leaves, purple 

 flowers, and yellow " apples." It is an introduction 

 from the north. 



Phy sails. — This is best known by the species P. 

 Pcriivia'na, the " Cape Gooseberry," which is natural- 

 ized throughout the Colony. 



Lyc'ium. — The species of this genus are small trees, 

 which are often spiny. They have rather small 

 flowers, the corolla being funnel-shaped, the anthers 

 open by longitudinal slits in the usual way. The fruit 

 is a berry. They are grown as hedge-plants, etc. 



General Descrii)tion of the Potato Family. 



Herhs, shrubs, or trees — Often with a poisonous juice. 

 Leaves — Various, alternate. 



Flowers— R^gvldiY, bell- shaped, or rotate, i.e. " wheel- 

 like ; " whorls in fives ; pistil of 2 carpels. 

 Fruit — Capsule or berry. 



Scrophularineae. 

 The Nemesia and Haeveya Family. 



This large order contains 1900 species of nearly 160 

 genera in 12 tribes. In South Africa there are 42 

 genera in 10 tribes. 



The order consists of herbs, shrubs, and trees. 



