168 



be pointed out that it is the iipperside of the leaf which in 

 the figure is turned towards the reader. 



Fig. 81 shows us a stalked pitcher springing ffono the back 

 of the midrib before tlie apex ; in other specimens pitchers of 

 this kind may grow more diminutive so far as to disappear 

 altogether, in which case only a threadlike appendage of the 

 midrib is left. It may also happen that the stalked pitchers 

 or the mere stalks simply lengthen the midrib and also that 

 the whole blade has been transformed into a pitcher (fig. 82). 

 Leaves with very small blades are also to be found (fig. 83) 

 as well as blades supported by uncommonly long petioles. We 

 are also in possession of a blade, of which the middle portion 

 has differentiated to a stalk, thus placed between two blades. 



The leaf which we represent in fig. 84 is a deviation of a 

 quite different kind, which needs no description. The same 

 applies to fig. 85. 



CJionemorpha macrophylla Gr. Don. 

 Habitat East Indies. 

 Coll. October 1896. 



Leaves with obtuse apex instead of acute, midrib not reaching 

 the apex but splitting up into veins recurvous along the margins. 



Cerbera spec. 



Habitat Ambon. 



Coll. September 1895. 



After a pair of normal cotyledons there appear two leaves 

 turned with their backs towards one another and partly grown 

 together. The petioles have coalesced laterally and to such a 

 degree that for the terminal bud there had been left just room 

 enough to escape investment. The figure (86) shows with suffi- 

 cient distinctness how far the midribs cohere and in what a 

 peculiar way the margins unite. 



CUCURBITACEA.E. 



Momordica Charantia L. 

 Habitat Java, Moluccas. 

 Coll. 1902. 



