KEY TO THE FAMILIES 



XVll 



Climbing vines. 

 Shrubs. 

 Herbs. 

 Ovary 1-celled, with a free central 



placenta. 

 Ovary 1-celled, with two parietal 



placentae. 

 Ovary 1-celled with three parietal 



placentae. 

 Ovary ^-celled, with two parietal 

 placentae. 

 Capsule not beaked. 

 Capsule strongly two-beaked. 

 Ovary 2-10-celled. 



Leaves palmately compound. 

 Leaves 3 foliolate. 

 Leaves pinnately compound. 

 Leaves simple. 

 Ovary 3-celled, 3-ovuled. 

 Ovary 2-4-celled, many-ovuled. 

 Stamens two or three. 

 Stamens four or more. 

 Ovary 4-10-celled. 

 Capsule 5 beaked. 

 Capsule not beaked. 



VlTACEAE, 130. 



Rhamnaceae, 129. 



Caryophyllaceae, 86. 

 Capparidaceae, 102. 

 Hypericaceae, 133. 



Cruciferae, 96. 

 Saxifragaceae, 103. 



Geraniaceae, 120, 

 oxalidaceae, 120. 

 Zygophyllaceae, 121. 



euphorbiaceae, 122. 



Elatinaceae, 133. 

 Lythraceae, 136. 



Crassulaceae, 102. 

 Linaceae, 121. 



2. 



Woody plants. 

 Style one. 

 Styles two or more. 



Fruit 1-celled, raauy-ovuled. 

 Fruit 1-5-celled, with 1-2 ovules in each 

 cell. 

 Herbs. 

 Stems flat, jointed , very prickly. 

 Stems not flat, jointed and prickly. 

 Climbing vines. 

 Not climbing. 

 Stamens very numerous. 

 Stamens 12 or fewer. 



Ovary several-maay-ovuled. 



Aquatic herbs with submerged 



leaves dissected. 

 Not aquatic herbs with submerged 

 leaves dissected. 

 Calyx tube adherent to base of 



ovary. 

 Calyx tube adherent to ovary. 

 Ovary 2-5-ovuled. 

 Fruit dry. 

 Fruit berry-like. 



Cornaceae, 14.5. 

 Grossulariaceae, 103. 

 pomaceae, 107. 

 Cactaceae, 136. 

 cucurbitaceae, 188. 

 loasaceae, 136. 



Haloragidaceae, 140. 



Lythraceae, 135. 

 Onagraceae, 138. 



Umbelliferae, 141. 

 Araliaceae, 141. 



Ovary superior. 

 Ovary inferior 



