138 



LESSONS IN BOTANY. 



14. Herbs. Ovary with 5 styles and but 1 seed. "^Leaduorts. 



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



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



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



15. Style one. Drupe 4-seeded. Vervains. 



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



16. Ovary 1, deeply 4-parted or 4-partible, fonning 4 achenia. * Borrageworts. 



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. Flower-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. 

 21. Lvs. or Ifts. entire. Fls. not spicate.*6'^en^ 



21. Leaves entire. Flowers spicate. 



22. Leaves opposite 23. 



22. Leaves alternate 24. 



23. Ovary 2-celled. 



23. Ovary 3-ceiled. Plants not twining > 



2-^. Ovary 3-celled. Plants not twining. \ 

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

 24. Ovary 2-eelled, 4-seeded. Stem erect,- 

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

 25. Styles 2. 

 25. Style one. 

 26. Herbs. Corolla 4-parted, dry, scarious. 

 26. Shrubs.... 27. 



27. Corolla 5-parted, imbricate in bud. 

 27. Corolla 4-parted, valvate or none. 

 28. Ovary deeply 4-parted, forming 4 (or fewer") acbenia. 



28. Ovary entire, of one piece 30. 



29. Leaves opposite. Stems square. 

 29. Leaves alternate. Stems round. 



* Bindweeds. 

 * Dogbanes. 



* Asclepiads. 



* Order 

 Eydraphylls. 

 ianworis. 

 Ribworts, 



* Loganiads. 



* Phloxworts. 



* Bindweeds. 

 ■ Borrageworts. 



* Hydrophylls. 



* Nightshades. 



Ribworts. 



Jasmineworts. 

 * Oliveioorts. 



* Labiates. 

 * 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. 

 81. Trees. Seeds wingless. * Paulownia, m Order 



81. Erect shrubs. Seeds wingless. * Eeathwo7'Ls. 



81. Herbs.... 32. 



96 

 9T 



101 

 91 

 95 



79 



85 



99 



