208 Plants and their \Vays in South Africa 



E. Flowers monoecious; ovules soli- 

 tary, endosperm mealy. 

 Flowers in dense involucred heads 



with staminate flowers central . ERJOCAULACE^. 

 EE. Flowers dioecious, seeds solitary. 

 Trees with unbranched stems, 



flabellate leaves . . . PALM^E. 

 Herbs; stamens 3, anthers i- 



celled (S.A.), endosperm mealy RESTIACE/E. 

 EEE. Flowers perfect. 



Herbs climbing by leaf tips ; 



stamens 6 FLAGELLARIACE^E. 



Rush like herbs or under shrubs ; 



stamens 6-3 .... JUNCACE^E. 

 CC. Perianth corolloid. 



D. Perianth hypogynous. 



E. Placentation parietal ; marsh herbs PONTEDERIACE^. 

 EE. Placentation axile. 



Fruit a capsule or berry, stamens 



6 ; many-seeded. . . . LILIACEJE. 

 Fruit a capsule, seeds solitary ; 



stamens 6-3 .... H.^MODORACE^. 

 DD. Perianth epigynous. 



E. Flowers imperfect, mostly dioeci- 

 ous. 



Stem twining, arising from enor- 

 mous cork covered tuber . . DIOSCOREACEJE. 

 EE. Flowers perfect. 



F. Placentation axile. 



Stamens 6 ; root stock a corm 



or bulb .... AMARYLLIDACE^. 

 Stamens 3 ; opposite sepals, 

 root stock a corm or rhi- 

 zome IRIDACE^E. 



Stamens 6-3 ; root stock with 

 red juide, never bulbous, 

 seeds solitary . . . H.^EMODORACEJE. 

 Stamens 5 ; flowers in axils 

 of large coloured bracts, 

 seeds arillate . . . MUSACE^E. 

 FF. Placentation parietal or axile. 



Stamens 3, opposite petals . BURMANNIACE^;. 

 FFF. Placentation parietal. 



Stamen i ; gynandrous : seeds 



many, small . . . ORCHIDACE^. 

 BB. Perianth with green sepals and coloured 

 petals (HETKROCHLAMYDEOUS). 



