138 



LESSONS IN BOTANY. 



14. Herbs. Ovary with 5 styles and but 1 seed. 

 14. Herbs. Ovary with 1 style and many seeds. 

 14. Shrubs, trees. Ovary 1-styled, 5-celled, 1-seeded. 

 15. Style none. Drupe 4-6-seeded. 

 15. Style one. Drupe 4-seeded. 

 15. Style one. Capsule 3-5-celled, many-seeded. 

 16. Ovary 1, deeply 4-parted or 4-partible, forming 4 achenia. ■* 



16. Ovaries 2, distinct, often covered by the stamens 18. 



16. Ovary 1, compound 17. 



17. Ovary 1-celled 20. 



17. Ovary 2-6-celled.... 22. 



18. Stigmas united or connate. . .19. 

 18. Stigmas distinct. Flowers minute, yellow 

 19. Elower-bud with convolute pieces. 

 19. Flower-bud with valvate pieces. 



20. Seeds several 21. 



20. Seed one. Corolla limb entire. 

 21. Leaves cleft and lobed. 



* Bindweeds. 

 * Dogbanes. 



* Ascleplads. 



* Order 

 * Hydrophylls. 



21. Lvs. or Ifts. entire. Fls. not spicate. Gentiamcorts. 

 21. Leaves entire. Flowers spicate. Elhivor's. 



22. Leaves opposite .... 23. 

 22. Leaves alternate .... 24. 



23. Ovary 2-celled. * Loganiads. 



23. Ovary 3-celled. Plants not twining » 



2K Ovary 3-celled. Plants not twining. } * Pl^^'^^^^^'i^- 



24. Ovary 2-celled, 2-6-seeded. Twining * Bindweeds. 



24. Ovary 2-celled, 4-seeded. Stem erect,. * Borrageworts. 



24. Ovary 2-celled, many-seeded 25. 



25. Styles 2. * Hydrophylls. 



25. Style one. * Nightshades. 



26. Herbs. Corolla 4-partcd, dry, scarious. Ribworts. 



26. Shrubs.... 27. 



27. Corolla 5-parted, imbricate in bud. Jasmineworts. 



27. Corolla 4-parted, valvate or none. * OUveworts. 



28. Ovary deeply 4-parted, forming 4 (or fewer) achenia. . . .29. 



28. Ovary entire, of one piece 30. 



29. Leaves opposite. Stems square. * Labiates. 



29, Leaves alternate. Stems round. * Borrageworts. 



30. Ovary with 4 or fewer seeds. Leaves opposite. Vervains. 



SO. Ovary with many seeds, or more than 4 31. 



31 . Trees or climbing shrubs. Seeds winged. * Bignoniads. 

 31. Trees, Seeds wingless. * Paulownia , \n Order 



81, Erect shrubs. Seeds wingless, * Ileathwurts. 



81, Herbs o'l. 



93 

 96 



97 



101 

 91 

 25 

 79 



