CHAP. II. ANOMALIES* 83 



tive ; so that it resembles a trap, to which it has 

 been compared, not only in form but in function. 



A second is that which occurs in Sarracenia pur~ In Sam- 

 purea or Purple Side-saddle-flower ; the leaves of pu 

 which are cucullate, approaching to funnel-shaped, 

 or rather pitcher-shaped reversed, so as to be capa- 

 ble of containing water; and are, besides, sur- 

 mounted with a flattened concave and somewhat 

 heart-shaped limb, originating in the apex or upper 

 extremity of the expansion, and constituting an 

 appendage that looks as if it were a secondary leaf 

 growing out of the first. 



A third, which is still more singular, occurs in Nepenthes 

 Nepenthes distillatoria. The leaf of this plant, 

 which is itself lanceolate, terminates at the summit 

 in a thread-shaped pedicle ; but supports on that 

 pedicle a hollow and cylindrical or rather pitcher- 

 shaped appendage, to which there is yet attached 

 the curious and peculiar process of a lid opening at 

 the one side. 



The last anomaly I shall now specify is that of a 

 small globular and membranaceous bag, attached as 

 an appendage to the roots and leaves of some of the 

 Aquatics. It is confined only to a few genera, but 

 is to be seen in great abundance on the roots or 

 leaves of the several species of Utricularia (PI. III. 

 Fig. 15.) inhabiting the ponds and ditches of this 

 country ; and on the leaves of Aldrovanda vescicu* 

 losa, an inhabitant of the marshes of Italy. In 

 Utricularia vulgaris this appendage is pear-shaped, 



G2 



