302 DISCHIDIA MARCGRAAVIA. [BOOK i. 



The student must not, however, suppose that all pitchers 

 are petioles, because those of Nepenthes and Sarracenia are 

 so. Those of the curious Dischidia Rafflesiana (fig. 59.), 



fig. 59. 



figured by Wallich in his Plant Asiatic Rariores, are 

 leaves, the margins of which are united. The pitchers of 



fig. 60. 



Marcgraavia and Norantea (fig. 60.) are bracts in the same 

 state. 



Spines of the leaves are formed either by lengthening of 



