DIVISION INTO FAMILIES AND GENERA 41 



PLANTS WITH ALTERNATE LEAVES. 



•{ 



j Stamens 10, or a smaller number. 21. 

 Stamens more than 10. 40. 



{Flowers irregular, butterfly-shaped ; fruit in a pod. 75. Bean Fam- 

 ily. XXIX. 

 Flowers regular or nearly so. 22. 



o 2 5 Flowers with one petal, petals united at base, or with no corolla. 23. 

 ' \ Flowers with a corolla of many petals. 30. 



( Flowers with a calyx, but no corolla. 24. 



23. < Flowers with an evident calyx, and a corolla of one petal, or united 

 ( petals. 35. 



( With 1 style or stigma ; leaves simple. 25. 



24. \ With 2 styles or stigmas, divergent ; leaves simple. 28. 



( Pistils several ; leaves compound. Prickly Ash Family. XXXV. 



{Leaves with transparent dots ; anthers opening by valves. 56. Cinnamon 

 Family. XII. 

 Leaves not dotted ; anthers not opening by valves. 26. 



ruit one-seeded. 27. 

 uit 3-or more-seeded ; a drupe or berry. 29. 



28. 



2j 5 Fruit crowned with a calyx. Sandal-wood Family. Tupelo. XI. 

 ' \ Fruit not crowned with a calyx. 28. 



Stamens 5 ; a tree. 55. Elm Family. X. 8. 



Stamens 8 ; a shrub. Mezereum Family. Leather wood. XIII. 



("Leaves broad and flat; stamens 4 or 5. 77. Buckthorn Family. 



XXXI. 

 29.-^ Leaves broad and flat ; stamens 6 ; fertile and sterile flowers on different 



plants. Smilax Family. XLI. 

 l_Leaves crowded, heath-like. Crowberry Family. XIV. 



„„ 5 Flowers with the calyx nearly obsolete. 31. 

 ' ( Flowers with an evident calyx. 32. 



("Fruit a drupe, crowned with the calyx ; stamens alternate with the pe- 

 I tals. Cornus Family. XXII. 



I Fruit a berry, above the calyx ; stamens opposite the petals. 76. Vine 

 L Family. XXX. 



31 



("Stamens as many as the distinct petals and alternate with them. 33. 

 22 J Stamens as many as the distinct petals and opposite them. 38. 

 | Stamens twice as many as the petals, 36. 

 |_ Stamens once, or several times, 3. 37. 



|" Calyx adherent to the ovary and crowning the many-seeded berry. Cur- 

 rant Family. XXIV. 

 on J Calyx half adherent; capsule bony, 2-seeded. Witch Hazel Family. 

 •"•1 XXIII. 



Calyx free from the ovary ; fruit few-seeded. 34. 

 l_Calyx free ; fruit many-seeded. 36. 



o, < Stamens on a fleshy disk-; capsule berry-like. Staff-Tree. XXXIT. 2. 

 " \ Stamens from the base of the calyx, or corolla, or from the receptacle. 37. 



ok $ Anthers opening by pores. 36. 



' ) Anthers not opening by pores. 57 or 65. 



