446 



RELATION TO ENVIRONMENT. 



The calyx is green, adherent to the ovary, and the limb divides into three, 

 lanceolate lobes. The petals are obovate and spreading, while the stamens 

 have all changed to petal-like members, called staminodia. Only one still 

 shows its stamen origin, since the anther is seen at one side, while the fila- 

 ment is expanded laterally and upwards to form the staminodium. 



Fig. 466. 



Spartium, showing the dusting of the pollen through the opening keels on the under side 

 an insect. (From Kerner and Oliver.) 



of an 



861, The ovary has three locules, and the three styles are usually united 

 into a long, thin, strap-shaped style, as seen in the figure, though in some 

 cases three, nearly distinct, filamentous styles are present. The end of this 

 strap-shaped style has a peculiar curve on one side, the outline being some- 



