ANALYTICAL KEY 13 



Stamens inserted on the calyx. 



Plant fleshy; stamens just twice as many as the pistils 



50. CRASSULACEAE, 232 

 Plant not fleshy ; stamens not twice as many as the pistils. 



Stipules present 54. ROSACEAE, 245 



Stipules wanting 51. SAXIFKAGACEAE, 233 



Ovary 1. 



Ovary simple, with 1 parietal placenta 57. LEGUMINOSAE, 270 



Ovary compound, as shown by the number of its cells, pla- 

 centae, styles, or stigmas. 

 Ovary 1-celled. 

 Corolla irregular. 



Petals 4; stamens 6, Corydalis in 47. PAPAVEBACEAE, 205 



Petals and stamens 5 76. VIOLACEAE, 320 



Corolla regular or nearly so. 



Ovule solitary; trees or shrubs 67. ANACARDIACEAE, 312 



Ovules more than 1. 



Ovules at the center or bottom of the cell. 



Petals not inserted on the calyx 42. CARYOPHYLLACEAE, 180 

 Petals inserted on the throat of a bell-shaped or 



tubular calyx 80. LYTHRACEAE, 332 



Ovules on 2 or more parietal placentae. 



Leaves punctate with translucent dots 75. HYPERICACEAE, 320 

 Leaves not punctate. 

 Petals 4 or 5 ; stamens 6. 



Stamens essentially equal. ', 



Calyx persistent; fruit a capsule 74. FRANKENIACEAE, 319 

 Calyx deciduous; fruit a stipitate pod 



49. CAPP ARID ACE AE, 231 

 Stamens unequal, two being shorter than the 



other four; pod sessile 48. CRTJCIFERAE, 207 



Petals 4 or 5; stamens as many; fruit a berry 



52. GROSSTJLARIACEAE, 241 

 Ovary 2-several-celled. 



Flowers irregular; anthers opening at the top 63. POLYGALACEAE, 307 

 Flowers regular or nearly so. 



Stamens neither just as many nor twice as many as the 



petals. 

 Trees or shrubs. 



Stamens usually fewer than the 4 petals 91. OLEACEAE, 378 

 Stamens more numerous than the petals. 



Woody throughout; fruit a double samara 69. ACERACEAE, 313 

 Woody at base only; fruit a capsule 74. FRANKENIACEAE, 319 

 Herbs. 



Petals 5 75. HYPERICACEAE, 320 



Petals 4 48. CRUCIFERAE, 207 



Stamens just as many or twice as many as the petals. 

 Ovules and seeds only 1 or 2 in each cell. 

 Herbs. 



Flowers monoecious or dioecious 64. EUPHORBIACEAE, 308 

 Flowers perfect and symmetrical. 



Cells of the ovary as many as the sepals. 



Ovary 2-3-celled 66. LIMNANTHACEAE, 312 



