RUBIACE^. 



295 



resembling umbels or capitules, and surrounded by an involucre of 

 simple or lobed bracts, sometimes much developed. 



There are cells of CrucJcshan'ksia which are triovulate. In this case 

 the placenta becomes somewhat more salient, especially towards the 

 summit, where it abandons the partition and bears three ovules. In 



Carphalea angulata. 



Fig. 279. Flower (?). 



Fig. 280. Long. sect, of base of flower ('^). 



Carphalea, from tropical eastern Africa, continental and insular, the 

 placenta is more elongate, becomes more slender, free or nearly so, 

 and also bears near the summit two or three ovules, rarely more. 

 The corolla is also that of Cruchshanksia, and the calyx becomes 

 foliaceous and coloured, accrescent, sometimes equally so as to 

 remain regular, sometimes unequally (fig. 279, 280), so that its lobes 

 are more developed on one side than on the other. Carphalea 



