170 SOUTH AFRICAN FLOWERING PLANTS. 



Campanulaceae. 

 The Eoella and Lobelia Family. 



This order contains 1000 species of 53 genera in 

 3 tribes. In Soutli Africa there are 20 genera. 

 WaliUnhcr' gia has 46 species, and Bod' la 11, while 

 Lobelia has nearly 30. 



The genus Cam'panula, which gives the name to 

 the order, is absent from South Africa, being widely 

 dispersed in the northern hemisphere ; but Wahlenher'- 

 gia has only one species in England. Blue and white 

 flowered Canterbury Bells (a species of Campan'ula) are 

 cultivated in South African gardens. 



Wahlenber'gia. — It will be readily seen in this or 

 any other member of the family that the ovary is 

 inferior, the sepals arising from the summit. Within 

 them is the gamopctalous corolla, forming a tube 

 generally bell-shaped, but sometimes spreading. The 

 stamens arise from within it, but are not adherent to 

 the corolla, a most unusual condition when the petals 

 are coherent. The same occurs in the Heaths, but is 

 very exceptional. 



The bases of the stamens are broad, and all five 

 together form a dome over the honey-secreting top of 

 the ovary. 



The capsules open by slits, holes, or pores in 

 different genera. Thus, while in Campanulas they are 



