2 1 6 Plants and their Ways in South Africa 



CC. Calyx herbaceous, petals present ; 

 ovary free or partially united to 

 tubular axis, leaves opposite. (Co- 

 hort Myrtiflorse.) 



Ovary free, capsule many seeded . LYTHRACE^E. 

 Ovary free, or adhering to the axis, 



fruit a one or two-seeded berry . RHIZOPHORACE^E. 

 Fruit a drupe, capsule, or berry ; 



stamen knee bent opening by pores MELASTOMACE^. 

 BBBB. Perianth epigynous. 



C. Inflorescence cymose, usually solitary, 



rarely racemose. 

 D. Placentation parietal ; stamens 



many. 



Flowers spirocyclic ; fruit a many- 

 seeded berry .... CACTACE^E. 

 Flowers cyclic ; fruit 3-celled, seeds 



solitary under shrubs . . . LOASACE^E. 

 DD. Placentation axile, stamens many 

 or few. (Myrtiflorae, excluding 

 Begoniaceae and Rosaceae.) 

 E. Leaves stipulate. 



F. Fruit a capsule; stipules persist- 

 ent ; leaves alternate. 

 Flowers monoecious ; fruit 

 winged, many seeded, succu- 

 lent, perennial herbs . . BEGONIACE^E. 

 Flowers perfect, fruit not 



winged, cells i-seeded . . ROSACES. 

 FF. Fruit a berry, stipules decidu- 

 ous ; leaves opposite. 

 Trees or shrubs, growing by 



the sea .... RHIZOPHORACE.E. 

 EE. Leaves exstipulate. 

 F. Stamens indefinite. 



Trees or shrubs, leaves mostly 

 opposite entire ; placentation 



axile MYRTACE^E. 



Under shrubs, leaves alternate, 



lobed ; placentation parietal . LOASACE^E. 

 FF. Stamens definite. 



G. Fruit many seeded. 



Stamens knee bent, dehisc- 

 ing by terminal pores ; 

 leaves opposite . . MELASTOMACE^E. 

 Stamens not bent, dehiscing 

 lengthwise, flowers always 

 four parted . . . ONAGRACE^. 



