XIV. FLOWERS 



162. FLOWER STRUCTURE 

 Object. To learn the parts of a typical -flower. 



Apparatus. Flowers of almost any common plant. Large, 

 regular, simple flowers, such as those of the tulip, lily, rose, magnolia, 

 and hollyhock, are preferable. 



A simple magnifier, a knife, and a pin are handy. 



: Method. Examine the 



flower and note that it 

 is made up of one or 

 more circles of parts. 

 How many such circles 

 do you find? 



Describe the outer- 

 most circle (calyx), its 

 color, number of parts 

 (sepals), and the shape 

 of each. (Such terms as 

 wheel-shape, cup-shape, 

 bell-shape, etc., will de- 

 scribe the calyx ; and 

 such terms as oval, spoon- 

 shape, boat-shape, etc., 

 will apply to the sepals.) 

 Describe the second circle (corolla). Of how many parts 

 (petals) does it consist? Describe as before. These (petals 

 and sepals) are called the non-essential organs. They are 



180 



FIG. 74. Water lilies. 

 (Photographed by W. C. Barbour.) 



