30 Key to the, System of 



Sepals pointed. 



Small terrestrial plants; outer portion of fruit firm. 

 Figure 12. Bergia. 



PITTOSPOREAE. 



138. Fruit indehiscent, succulent. 



Somewhat woody twiners or climbers ; petals coherent into 

 a tube ; stamens surrounding the pistil; anthers opening 

 by longitudinal slits. Billardiera. 670 



Fruit dehiscent ... ... ... 139 



139. Stamens all bent to one side. 



Perennial plants, often small and erect ; petals divergent 

 from the base ; anthers opening by terminal pores ; fruit 

 bursting by longitudinal slits. Cheirantliera. 672 



Stamens surrounding the pistil ... ... ... 140 



140. Valves of the fruit thick. 



Shrubs or trees ; petals coherent into a tube ; anthers open- 

 ing by longitudinal slits ; fruit opening longitudinally. 



Pittosporum. 673 



Valves of the fruit thin 141 



141. Seeds one, two or three in each fruit-cell. 



Petals divergent from the base ; anthers opening by longi- 

 tudinal slits ; fruit much compressed, opening only near 

 the summit; seeds flat. Bursaria. 676 



Seeds several in each fruit-cell. 



Petals divergent from the base or coherent into a tube ; 

 anthers opening by longitudinal slits ; fruit slightly com- 

 pressed, opening longitudinally ; seeds often turgid. 

 Figure 10. Marianthus. 677 



RUTACEAE. 



142. Fruit entire, somewhat pulpy. 



Trees ; leaves opposite, large, often simple ; calyx four- 

 cleft ; petals four ; stamens eight ; fruit four-celled. 



Acroiiychia. 678 



Fruit divided into fruitlets, dry 143 



