12. ke;y to the families. 



66. Stamens 5 or more. 43 AIZOACEAE. 

 Stamens 1—2 (Pollichia). 45 CARYOPHYLLACEAE. 



67. (63) Ovules 2 suspended side by side. Fruit usually 1 seeded. 



68. 

 Ovules 2 one above the other or more than 2. 70. 



68. Stamens as many as and alternate with perianth segments. 



Leaves exstipulate. 88 ICACINACEAE. 



Stamens opposite or more than perianth segments. 69. 



69. Flowers hermaphrodite. Leaves exstipulate. 



36 OLACACEAE. 

 Flowers unisexual. Leaves stipulate. 80 EUPHORBIACEAE. 



70. Ovules attached to a single placenta. Fruit a legume. 



69 LEGUMINOSAE. 

 2 or more placentas, or if 1 then fruit a berry. 7L 



71. Perianth segments imbricate in the bud. Ovary sessile. 



100 FLACOURTIACEAE. 



Perianth segments valvate, or if imbricate, then ovary 



stalked. 72. 



72. Stamens perigynous. Ovary sessile or short stalked. Leaves 



exstipulate. 107 LYTHRACEAE. 



Stamens hypogynous, or if perigynous, ovary long stalked 



and leaves stipulate. 55 CAPPARIDACEAE. 



73. (44) Ovules 1 in each ovary cell. 74. 

 Ovules 2 or more in each cell. 82. 



74. Ovules erect or ascending. 75. 

 Ovules pendulous or descending. 78. 



75. Style 1 with 1-3 stigmas. Leaves pinnate exstipulate. 



89 SAPINDACEAE. 

 Styles 2-10 free or united below. Leaves undivided or lobed. 



76. 



76. Trees or shrubs. Leaves alternate stipulate. 



92 RHAMNACEAE. 

 Herbs or undershrubs or shrubs with leaves exstipulate. 77. 



77. Flowers solitary or in cymes. 43 AIZOACEAE. 



Flowers in racemes or spikes (Phytolacca). 



42 PHYTOLACCACEAE. 



78. (74) Flowers unisexual or polygamous. 79 

 Flowers hermaphrodite. 80. 



79. Stamens perigynous ; sometimes with staminodes. Ovary 2 



celled. (Trichocladus) 66 HAMAMELIDACEAE. 



Stamens hypogynous. Ovary usually 3 celled. 



80 EUPHORBIACEAE. 



80. Trees or shrub (Peddiea). 106 THYMELAEACEAE. 

 Herbs or undershrubs. 81. 



81. Flowers very small. Perianth segments 4. Stamens 2, 4, or 



