FLOWERS 181 



for protection of the innermost parts and they often attract 

 insects. 



Now find the two kinds of essential organs which are found 

 within the flower (stamens and pistils). 



Conclusion. State how many and what organs are 

 found in a typical flower, naming them from outside towards 

 the center. 



Suggestion. Find a flower in which one or more kinds 

 of organs are missing (incomplete). Find one in which all 



Mil 



i i i 



FIG. 75. Parts of a water lily. 



parts are present and of the same number (symmetrical) or 

 a multiple of the same number. Find a flower in which 

 some petals are larger than others (irregular). Find flowers 

 in which the petals are grown together (gamopetalous) into 

 one piece. 



Is there any relation between the number of petals and 

 stamens? (1) Make drawings of each flower studied, mak- 

 ing the drawings to scale. Remove one of each set of floral 

 organs, and (2) draw it enlarged, naming each part. (3) 

 Draw a plan of each flower, showing the number and position 

 of the various organs. (4) Draw a diagram of a length- 

 wise section through the center of each flower and show the 

 insertion of each part on the receptacle. 



