356 Plants and their Ways in South Africa 



(didynamous, two in power), sometimes with one or two 

 loculi. Ovary 2 -celled. Ovules many. Fruit a capsule, 

 rarely a berry, with axile placentation. Below the ovary is a 

 honey-making disc. The flowers are short-tubed and open 

 for flies, or with a long tube for bees, with the stamens so 

 placed as to brush the back of the insect ; 160 genera, 46 South 

 African, widely distributed in temperate zones. 



Herbs, trees, or shrubs, found in all countries. 



A. Back lobe of the corolla overlapping the front lobes in 

 the bud. 

 B. Corolla saccate or spurred at base^ tube short or none. 

 C. Corolla with two pouches or spurs — 



Hemimeris. — Corolla 2-lipped. Stamens 2. Anthers 

 I -celled. Two tooth-like bodies at the side of the throat 

 clasp the stamens. Small annuals with opposite leaves and 

 bright little yellow flowers. Western. 



I. II. 



Fig. 338. — I. Floral diagram of Halleria flower. II. Bilocular ovary of 

 Antirrhinum. (From Edmonds and Marloth's " Elementary Botany for South 

 Africa"). 



Diascia. — Corolla 2-lipped, but more regular than in 

 Nemesia. Upper lip 2-parted, lower 3-parted. Middle lobe 

 often notched. As in Nemesia the two longer (front) stamens 

 curve round and clasp the upper pair. 



Annuals or persistent herbs, often spreading, with dark wine-coloured 

 or purplish flowers. Eastern and Western. In dry, sandy soil. Forty- 

 seven species in South Africa. 



CC. Corolla with a single pouch or spur at base. 

 Nemesia. — Upper lip 4-bped, lower entire. Stamens 

 4, the lower filaments curved round at the base and clasping 



