4U 



ELEMENTS OF STRUCTURAL BOTANY, 



51. The group of plants to which Catnip 

 belongs is easily distinguished by the square 

 stem, irregular corolla, and four stamens. 



Fig. 60. 



CATNIP. 



CHAPTER Vm. 



EXAJVIINATION OF PLANTS WITH MONCECIOUS AND DICECIOUS 



62. Cucumber. You can hardly have failed to 

 notice that only a small proportion of the blossoms on 

 a Cucumber vine produce cucumbers. A great many 

 wither away and are apparently of no use. An atten- 

 tive inspection will show that some of the blossoms 



