Classification of Plants 259 



Nicotina (Wild Tobacco) is found in many parts of the 

 Cape. Probably no species is native of this country. 



Order Scrophulariace^. 



Flowers perfect in cymes or racemes. Calyx 4- or 5- 

 parted. Corolla 5 -parted, or 4 by the union of two back 

 petals, often 2-lipped. Anthers 4, sometimes 2, of two 

 lengths (didynamous, two in power). Ovary 2-celled. 

 Ovules many. Fruit a capsule, rarely a berry, with dumb- 

 bell 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 placed to brush the 

 back of the insect. 



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. 



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. 



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

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

 lobe often notched. In place of the two tooth-like bodies in 

 Nemesia the two longer stamens curve round and clasp the 

 upper pair. 



Annuals often spreading, with dark wine-coloured or purplish flowers. 

 Eastern and Western. In dry, sandy soil. 



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



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

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

 the upper, as in Diasia. Anther cells clinging together in 

 pairs. 



Herbs annual or perennial, hearing racemes of pretty flowers of many 

 hues. Twenty-eight species, both Eastern and Western. Beautiful 

 Nemesias in great abundance are found in the Malmesl)ury district. 



