208 



Plants and their Ways in South Africa 



E. Flowers moncecious ; ovules soli- 

 tary, endosperm mealy. 

 Flowers in dense involucred heads 



with staminate flowers central . Eriocaulace.^. 

 EE. Flowers dicecious, seeds solitary. 

 Trees with unbranched stems, 



flabellate leaves . . . Palm.e. 



Herbs; stamens 3, anthers i- 



celled (S.A.), endosperm mealy Rkstiace.e. 

 EEE. Flowers perfect. 



Herbs climbing by leaf tips ; 



stamens 6 Flagell\riace.e. 



Rush like herbs or under shrubs; 



stamens 6-3 .... Juncace.e. 

 CC. Perianth corolloid. 



D. Perianth hypogynous. 



E. Placentation parietal ; marsh herbs Pontederiace.e. 

 EE. Placentation axile. 



Fruit a capsule or berry, stamens 



6 ; many-seeded. . . . Liliace.i:. 



Fruit a capsule, seeds solitary; 



stamens 6-3 .... H.emodorace.^. 

 DD. Perianth epigynous. 



E. Flowers imperfect, mostly diceci- 



Stem twining, arising from enor- 

 mous cork covered tuber . . Dioscoreace.e. 

 EE. Flowers perfect. 



F, Placentation axile. 



Stamens 6 ; root stock a corm 



or bulb .... Amaryllidace.e. 

 Stamens 3 ; opposite sepals, 

 root stock a corm or rhi- 

 zome ..... Iridace.e. 

 Stamens 6-3; root stock with 

 red juice, ne\'ei' bulbous, 

 seeds solitary . . . H.emodorace.e. 



Stamens 5 ; flowers in axils 

 of large coloured bracts, 

 seeds arillate . . . Musace.ti. 



FF. Placentation parietal or axile. 



Stamens 3, opposite petals . Burmaxniace.e. 

 FFF. Placentation parietal. 



Stamen i ; g^'nandrous : seeds 



many, small . . . Orchidace.e. 



I'JB. Perianth with green sepals and coloured 

 petals (Heterochlamydeous). 



