2o8 Plants and their Ways in South Africa 



E. Flowers monoecious ; ovules soli- 

 tary, endosperm mealy. 

 Flowers in dense involucred heads 



with staminate flowers central . Eriocaulace^. 

 EE. Flowers dioecious, seeds soUtary. 

 Trees with unbranched stems, 



flabellate leaves . . . Palm^. 

 Herbs; stamens 3, anthers i- 

 celled (S.A.), endosperm mealy Restiace^. 

 EEE. Flowers perfect. 



Herbs climbing by leaf tips ; 



stamens 6 Flagellariace^. 



Rush like herbs or under shrubs ; 



stamens 6-3 . . . . Juncace^. 

 CC. Perianth corolloid. 



D. Perianth hypogynous. 



E. Placentation parietal ; marsh herbs Pontederiace^. 

 EE. Placentation axile. 



Fruit a capsule or berry, stamens 



6 ; many-seeded. . . . Liliace^. 

 Fruit a capsule, seeds solitary ; 



stamens 6-3 .... H^MODORACEiE. 

 DD. Perianth epigynous. 



E. Flowers imperfect, mostly dioeci- 

 ous. 

 Stem twining, arising from enor- 

 mous cork covered tuber . . Dioscoreace^. 

 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^. 



Stamens 6-3 ; root stock with 

 red juice, never bulbous, 

 seeds solitary . . . H^modorace^. 

 Stamens 5 ; flowers in axils 

 of large coloured bracts, 

 seeds arillate . . . Musace^. 

 FF. Placentation parietal or axile. 



Stamens 3, opposite petals . Burmanniace^. 

 FFF. Placentation parietal. 



Stamen i ; gynandrous : seeds 



many, small . . . ORCHiDACEiE. 

 BB. Perianth with green sepals and coloured 

 petals (Heterochlamydeous). 



