36 Key to the System of 



169. Stamens generally few, disunited. 



Shrubs or small trees ; leaves comparatively large, always 

 entire ; sepals one to three ; petals absent ; anthers open- 

 ing by longitudinal slits ; fruit compressed, with two 

 broad valves and two seeds. Omalanthus. 762 



Stamens numerous, united. 



Shrubs or small trees ; leaves mostly small, entire ; seg- 

 ments of calyx five ; petals absent ; anthers opening by 

 longitudinal slits ; fruit turgid, with usually three 

 narrow valves and one or two seeds. Figure 23. 



Bertya. 763 



170. Petals present ... ... ... 171 



Petals absent or rudimentary ... ... 172 



171. Sepals longer than the petals. 



Shrubs ; leaves entire ; stamens numerous, crowded ; anthers 

 opening by longitudinal slits ; stigma sessile, depressed, 

 lobeless. ' Beyeria. 765 



Sepals shorter than the petals. 



Shrubs ; leaves usually narrow, entire ; stamens numerous, 

 connate ; anthers opening by longitudinal slits. 



Ricinocarpus. 767 



172. Anthers opening by terminal pores. 



Herbs or half -shrubs ; leaves narrow or small, entire ; sepals 

 five, petaloid, whitish ; petals rudimentary ; stamens five, 

 disunited. Foranthera. 768 



Anthers opening by longitudinal slits ... ... 173 



173. Calyx lobed. 



Herbs or half -shrubs ; leaves mostly small ; calyx-lobes 

 three to five ; petals absent ; stamens ten or fewer, dis- 

 united. Amperea. 770 



Calyx consisting of sepals ... ... ... ... 174 



174. Sepals usually three. 



Shrubs or trees ; leaves comparatively large, entire or in- 

 dented ; petals absent ; stamens many, disunited ; anthers 

 blunt, their cells turgid. Claoxylon. 771 



Sepals more than three ... ... ... ... 175 



