Plate XVI. 



SUMMIT OF LEAF. 



53 



General subject Name each of the forms from fig. 1 to 8. To which of 

 the* may the character of the leaf-nmmit in fig", 10 be referred fig. 18 fig. 

 91 What kind of appendage In fig. 11? Difference between figs. 4 and 51 

 and 8 T and 8 S and 8? What kind of leaf at fig. 14, and to what tribe of 

 plants does It belong fig. 12 fig. 15? When a leaf has a curved and attenu- 

 ated point, what Is It called a sharp point ending In a kind of bristle with 

 a rounded notch a sharp notch a blunt end appearing as If cat off at the 

 extremity ? Instances of each form. 



