Plate XII. 



LEAF FORMS. 



41 



17 



General subject. Name each of them. Instances of each. Define Cordate 

 -Ovate Spatulate Acerosft Sagittate Rhombotdal Connate. Difference 



between flgs. 2 and 3 4 and 9 13 and 14? How is fig. 8 IT 18 f How Is the 

 Venation in these leaves ? What, then, do they indicate. Endogens or Exogens T 



