CONTENTS. 



COURSE FIEST. 



PAGE 



DESCRIPTIVE BOTANY 15 



CHAPTER I. THE FLOWER 15 



Ex. 1. The Symmetry of Flowers 15 



2. Complete and Incomplete Flowers 18 



3. Essential Organs and Protecting Organs 19 



4. Dichlamydeous, Monochlamydeous, and Achlamyde- 



ous Flowers 20 



5. Perfect, Imperfect, and Neutral Flowers 22 



6. Monoecious, Dioscious, and Polygamous Plants 24 



7. Form of Receptacle and Insertion of Floral Organs. . 26 



8. On Polyandrous Stamens 28 



9. The Growing together of Stamens 30 



10. The Growing together of Carpels. 32 



11. Union of Floral Whorls with each other Calyx and 



Pistil 41 



12. Union of Floral Whorls with each other Corolla. . . 43 



13. Union of Floral Whorls with each other Stamens. . 46 



14. The Receptacle 53 



15. Appendages of the Receptacle 56 



CHAP. II. COMPARING AND CLASSIFYING PLANTS. ... 59 



Ex. 16. Plant Characters and Affinities 59 



1Y. How to begin Classification 64 



