204 Plants and tJicir Ways in South Africa 



CC. Ovary 2- or more celled; leaves oppo- 

 site, stipulate Rubiace.i:. 



BB. Stamens epigynous, free from the co- 

 rolla : ovary ^-lo-celled ; half inferior ; 



fruit a capsule Campanulace.'T:. 



AA. Ovary superior. 



B. Flowers regular. 



C. Leaves alternate (also opposite and 

 whorled in Ericace^). 

 D. Flower parts usually in fours ; rigid 

 shrubs with reduced needle- 

 shaped leaves ; stamens fre- 

 quent Iv opening by pores . Ericace.e. 

 DD. Perianth 5-parted; habit various; 

 leaves expanded. 

 Fruit a berry or capsule, obliquely 



inclined Solanace-T£. 



Fruit an achene .... Plumbaginace.^. 



CC. Leaves opposite; alt. in Pachvl'odniui, 

 and in some Gentianace:e. 

 D. Pollen grains collected in masses. 

 Herbs often with milky juice ; seeds 



hairy ...... Asclepiadace.^i. 



DD. Pollen grains separate. 



Shrubs with milk)' juice; seeds 

 usually hairy ; fruit a berry or 

 follicles; leaves alternate and 

 stipulate in Pacliypodiitin . ArocvNACE.E. 



Herbs with bitter juice; corolla 

 withering on ; fruit a berrs' or 

 follicles; seeds not hairy . . Gi':ntianace.--e. 



BB. Flowers zygomorphic or rarely regular ; 

 corolla 2-lipped. 

 C. Ovary 2-celled ; fruit a many -seeded 

 capsule, rarely a berr)'. 

 Leaves simple, seeds small, endosperm- 



OUS ....... SCROBHULAKlACE.i: . 



Leaves compound ; seeds flat \\ith large 



membranous wings, except in K'l- 



gelia; ex-endospermous . . . BuiNONiACE.T:. 



CC. Ovary 4-lobed or 4-celled, separating in 



fruit ; four seeded. 

 Leaves opposite ; stem square ; strong 



odour ...... Laiuat.e. 



Leaves alternate ; stem round; iTowcrs 



nearly regular ..... BoraciINAcile. 



