158 Plants and their Ways in South Africa 



AA. Carpels united. 

 B. Stamens free. 

 C. Ovary I -celled, or with false partitions. 

 Fls. regular, 

 D. Leaves alternate. Ovules borne on 

 the walls of the ovary. 

 Petals 4 ; stamens 6, tetradynamous . 

 ,, 4 ; ,, many ; ovary 



stalked ..... 



,, 5 ; ,, 5 ; plants insecti- 

 verous ..... 



DD. Leaves opposite. Ovules borne on 

 free central placenta 

 CC. Ovary 2-celled ; flowers irregular 

 BB. Stamens united (monadelphous), or free 

 in Tiliacese ; petals twisted in the bud. 

 Leaves stipulate. 

 Stamens joined to the petals ; anthers 

 I -celled ...... 



Stamens joined to the petals or free ; 

 anthers 2-celled .... 



Stamens free; anthers 2-celled, opening 

 inward ...... 



Sub-class IL — Disciflor^. 



Sepals separate or united, free from the ovary. 

 Ovary superior. Disc usually conspicuous 

 as a ring or cushion at the base of the ovary 

 or broken up into glands. Ovary superior. 



Flowers often irregular. Leaves not gland-dotted. 



Disc prolonged through the centre of the ovary . 



Disc a cushion beneath the ovary. Leaves 

 gland-dotted ...... 



Disc often at one side. Petals one less than 



sepals ........ 



Sub-class IIL — Calyciflor^l. 



Sepals united, rarely free, often united with the 

 ovary. Ovary often inferior. 



A. Pistil apocarpous, superior except in some 



Rosacese. 



B. Pistil of one carpel, fruit a legume . 



BB. Pistil of two or more carpels (S. A. genera). 

 Stamens numerous ..... 

 Stamens 4-7 ; ovary of 4-7 carpels . 



Crucifer^, 



CAPPARIDEi^. 



Droserace^. 



Caryophyllace^. 

 polygalace.^^.. 



Malvace^. 

 Streculiace/e. 



TiLIACE/E. 



Geraniace^.' 



RUTACE^. 



Sapindace^. 



Leguminose^. 



ROSACE^E. 



Crassulace^. 



• Including OXALIDACE^. 



