8 KEY AND FLORA 



II. Choripetalous Division. Calyx and corolla both present, the petals not united. 



A 



Stamens more than 10. 



FAMILY PAGE 



(1) Trees, shrubs, or woody vines. 



(a) Leaves alternate. 

 * Ovary 1, simple. 



Fruit a drupe 46. Rose .... 113 



** Ovary 1, compound ; fruit dry. 



Ovary 5-celled, 1-2-seeded at maturity . . 64. Linden. . . .157 



Ovary 3-celled, many-seeded 69. Begonia . . . 164 



*** Ovary 1, compound; fruit fleshy .... 46. Rose .... 113 

 * * Ovaries numerous. 



t Leaves with stipules. 



Stamens inserted on the receptacle . . 35. Magnolia ... 92 

 Stamens many, monadelphous . . . 66. Mallow .... 158 

 Stamens inserted on the calyx . . . 46. Rose .... 113 

 ft Leaves not with stipules. 



Small trees ' ... 37. Papaw .... 94 



(6) Leaves opposite ; fruit dry. 



Ovary single, 3-5-celled 44. Saxifrage . . . 109 



Ovaries several, inclosed by the calyx tube . 36. Caly can thus . . 94 



(2) Herbs. 



(a) Ovary single, simple ; fruit a berry .... 34. Barberry ... 91 



(b) Ovaries several, simple. 



Stamens inserted on the receptacle . . . 33. Buttercup ... 83 

 Stamens inserted on the calyx 46. Rose .... 113 



(c) Ovary compound. 



Aquatic herbs, leaves flat 32. Water Lily . . 82 



Marsh herbs, leaves tubular 43. Pitcher Plant . 108 



Terrestrial herbs. 

 * Ovary 1-celled. 



Placentae central, juice watery ... 30. Purslane . . 



Placentae parietal, juice milky or colored 39. Poppy ... 



Placentae 2, parietal 41. Caper ... 



Placentas 3 or more, parietal. 



Leaves alternate 42. Mignonette . . 108 



Leaves opposite 66. St. John's- wort . 160 



Leaves apparently wanting; stems fleshy 70. Cactus .... 166 



** Ovary several-celled ; stamens monadelphous 65. Mallow . . . .158 

 *** Ovary 3-celled; stamens not much if at all 



monadelphous ; stems fleshy, juice acid . 69. Begonia . . . 164 



