ANALYTICAL KEY 13 



Stamens inserted on the calyx. 



Plant fleshy; stamens just twice as many as the pistils 



' 50. Cbassulaceae, 232 

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



Stipules present i 54. Rosaceae, 245 



Stipules wanting 51. Saxifraqaceae, 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. Papavekaceae, 205 



Petals and stamens 5 76. Violaceae, 320 



Corolla regular or nearly so. 



Ovule solitary; trees or shrubs 67. Anacaediaceae, 312 



■Ovules more than 1. 



Ovules at the center or bottom of the cell. 



Petals not inserted on the calyx 42; Cakyophyllaceae, 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. Feankeniaceae, 319 

 Calyx deciduous; fruit a stipitate pod 



49. Cappabidaceae, 231 

 Stamens unequal, two being shorter than the 



other four; pod sessile 48. Crucifebae, 207 



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



52. Gbossulabiaceae, 241 

 Ovary 2-several-celled. ' 



Flowers irregular; anthers opening at thei top 63. Po^ygaI/ACEAE, 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 

 Stanaens more numerous than the petals. 



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

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



Herbs. , > > / 



Petals 5 75. Hypericaceae, 320 



Petals 4 48. Ceucifebae, 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 synunetrical. 



Cells of the ovary as many as the sepals. 



Ovary 2-3-celled 66. Li«inanthaceae, 3^12 



