72 



THE FLOWER 



(6) If imperfect, is it monoecious or difficious? 



(7) What is the type of inflorescence? 



(8) Is the flower apetalous or complete? 



(9) Is the flower poly- or gamo-sepalous? 



( 10 ) Is the flower poly- or gamo-petalous ? 



(11) Is the ovary superior or inferior? 



( 12 ) How many sepals, petals, stamens and pistils ? 



(13) To what are the different sets of organs attached? 



(14) If unsymmetrical, describe the parts. 



(15) Describe the stamens. How do they open? 



(IC) Describe the pistil or pistils. What type of placenta? 



How many ovules (estimated by cross and long sections) ? 

 (17) If a single pistil, how many carpels and cliambers? 



2. Plant Description. — Having determined the preceding points a com- 

 plete description of the plant and flower should be written. The pupil is 

 now ready to use a manual for the determination of the family, genus and 

 species. The family characters should be carefully noted and when an- 

 other plant of the same family is studied, the pupil should try to determine 

 the family without the use of a manual. 



3. Careful dravi^ings and diagrams should be made of all plants and 

 flowers studied. 



The following types are suggested for these exercises: 



Monocofyledonous 



Lily 



Tulip 



Lily of the Valley 



Amarillus 



Indian turnip 



Wheat 



Oats 



Com 



Rose 



Apple or pear 



Peach, plum, cherry 



Blackberry 



Pea or bean 



Bloodroot 



Mustard 



Buttercup 



Dicotyledonous 



Potato or tomato 



Sunflower or daisy 



Dandelion 



Morning glory 



Melon or gourd 



Maple 



Elm 



Oak 



Willow 



QUESTIONS 



1. What are the parts of the flower? 



2. What constitutes the floral envelope? 



3. Wliat constitutes the essential organs? 



