2 10 Plants and tJieir Ways in SontJi Africa 



FP\ Leaves stipulate ; ovule i, 

 basal, erect, orthotropous. 

 Herbs with sheathing (ochra- 



ceous) stipules . . . Polygonace.^. 

 Herbs or shrubs, stipules not 

 ochraceous .... Urticace.e. 

 EE. Ovule pendulous, trees or shrubs, 

 milky, leaves stipulate. 

 Flowers clustered in hg-like re- 

 ceptacles ..... MORACE.E. 

 EEE. Ovules basal becoming parietal, 

 or axillary. 

 Fruit a capsule or of separable 

 nuts, leaves exstipulate, xero- 

 phylic herbs .... Aizoace.t; 



(FlCOIDIi.^). 



CC. Perianth perigynous. 

 DD. Carpels syncarpous. 



Fruit fleshy or dry, trees with alter- 

 nate exstipulate leaves, or cord- 

 like parasites .... Laurack-'F,. 

 Fruit a capsule, placentation parietal, 

 stamens many, with petaloid 

 staminodia ; fleshy herbs, leaves 

 usually opposite .... Aizoace.e. 

 CCC. Perianth epigynous. 



Fruit a nut ; moncecious, trees, leaves 

 alternate with scaly stipules . , Fagace.^. 



BB. Calyx coroUoid. 



C. Perianth hypogynous. 



D. Carpels apocarpous ; leaves exstipu- 

 late. 

 E. Achenes few or many, bracts not 

 showy; stamens many, herbs 

 or climbing shrubs . . . Ranunculace.e. 



EE. Achenes i, bracts often showy. 

 Stamens 4 opposite and adnate to 

 calyx lobe ; leaves aUernate, 

 shrubs or trees . . . Proteace.^. 



Stamens 1-5 or more by branch- 

 ing, alternate to calyx lubes, 

 hypogynous ; leaves opposite, 

 herbs or climbing shrubs . NvcTAGiNACE.ii:. 



DD. Carpels syncarpous; leaves stipulate. 

 Fruit a three winged or angled nut ; 



herbs Polygonace.e. 



Fruit a capsule, flesh}^ herbs, stipules 



not sheathing .... Portulacace.e. 



