ANALYSIS OF THE ORDERS 133 



6. Stamens on the torus or on the hypogynous ( 83) petals. . , 63. 



6. Stamens and petals on the calyx tube (perigynous, 83).. .63. 

 7. Ovaries simple, distinct or one only. Vines or erect shrubs. . . .69. 

 7. Ovary compound. . . .8. 



8. Ovary interior, wholly adherent to the calyx. . . .70. 



S. Ovary superior, free from the calyx, or nearly free 9. 



9. Stamens opposite to the petals, and of the same number 72. 



D>. Stamens alternate with the petals, or of a different number.... 10 



10. Leaves opposite on the stem. . . .73. 



10. Leaves alternate, compound.. ..76. 



10. Leaves alternate, simple ...78. 



11. Stamens 3 times as many as the petals, or more. . . .47. 

 11. Stamens 1 or 2 times as many as the petals, or fewer 12 



12. Pistils distinct and simple, few or one only.... 48. 



12. Pistils united into a compound ovary 18. 



13. Ovary free from the calyx. . .14. 

 13. Ovary adherent to the calyx. ..49. 



14. Stamens opposite to the petals, and of the same number 51. 



14. Stamens alternate with the petals, or of a greater number 52. 



15. Flowers regular or nearly so. Fruit never a legume 17. 



15. Flowers irregular (rarely regular), and the fruit a legume. . 16 

 16. Stamens 3 or more times as many as the petals. . . .42. 

 16. Stamens few and definite, 5-12.... 43. 



17. Stamens numerous, 3 or more times as many as the petals.... 21. 

 17. Stamens lew and definite .... 18. 



18. Ovary free from the calyx, superior... 19. 



18. Ovary adherent to the calyx, inferior 39. 



19. Pistils one or indefinite (1-15), distinct, simple.. .30. 

 19. Pistils definite in number, as follows, viz 20. 



20. Carpels (or pistils) 2, united, the short styles combined into 1 ... .31 



20. Carpels 3 or 4, united, the styles or stigmas 3, or 4, or 6 ... .32. 



20. Carpels 5, distinct or united, with 5 distinct styles. . . .37. 



20. Carpels 5, united, and the styles combined into 1. .38. 



21. Stamens on the torus (hypogynous) 22. 



21. Stamens situated on the corolla at base 27. 



21. Stamens situated on the calyx at the base 28. 



22. Pistils few or many, distinct (at least as to the styies) . . . 23. 



22. Pistils (and styles also, if any) completely united. .. .24. 



23. Petals 5 or more, deciduous. Leaves not peltate. Order of the * Crowfoot*. J 

 23. Petals 3, persistent and withering. Floating leaves peltate. Water-shields. 7 

 23. Petals many, deciduous. Leaves all peltate. * Water- beans. 8 



24. Sepals 2 only ^6. 



24. Sepals 4, 5, or 6 , mostly 5 . . .25 



