Vlll 



KEY TO THE FAMILIES. 



i iv.irv simple. _ iflo 



Stamens bypogynous. Ranunculaceae, 102. 



Stamens perigynous. Rosaceae, 13U. 

 < iv.irv compound. ~- 



i iv irv 1 -celled with a central placenta. Portulacaceae, 92. 



< ►vary Beveral-celled. Nymphaeaceae, 101. 

 ( .il\ \ more or less'coherent with the surface of the 

 c ompound ovary. 

 Ovary more than 1-celled. 



vea alternate, with stipules. Rosaceae, 130. 



L aves opposite, without stipules. Philadelphus, 127. 



< rvary 1-celled. _ nn 



11.,, enta basal. Portulacaceae, 92. 



Placenta parietal. 



Plants fleshy, leafless or with minute 



leaves; petals many. Cactaceae, 167. 



Plants rough-leaved; petals 5-10. Loasaceae, 166. 



2. Stamens not more than twice as many as the petals. 



Stamens opposite the petals. 



trv 2-4-celled. Rhamnaceae, 160. 



Ovary 1-celled. 



Ant lurs opening by uplifted valves. Berberidaceae, 111. 



Anthers not opening by uplifted valves. Portulacaceae, 92. 



Stamens not opposite the petals. 



< rvary wholly superior. 



Ovaries two or more. 



Ovaries somewhat united at the base, 

 separate above. 

 Trees. Aceraceae, 159. 



Herbs. Saxifragaceae, 125. 



Ovaries entirely separate. 



mens united with each other and 

 with the stigma. Asclepiadaceae, 195. 



.mens free from each other and 

 from the stigma, 

 .mens hypogynous. 



Leaves not fleshy. Ranunculaceae, 102. 



Leaves thick and fleshy. Crassulaceae, 124. 



Stamens perigynous. 



mens just twice as many as 

 the pistils. Crassulaceae, 124. 



nuns not just twice as many 



as the pistils. 

 Leaves without stipules. Saxifragaceae, 125. 

 I eaves with stipules. Rosaceae, 130. 



nlv one. 



5-lobed and beaked with a 

 un»ted style. Geraniaceae, 154. 



Ovary no! lobed and beaked. 



simple with 1 parietal placenta. Leguminosae, 142. 

 try compound, as shown by the 

 number of cells, placentae, styles 

 or Btigmas. 



' Ivarv l-< .lied. 



1 'roll. i irregular. 



Stam.ns 6; petals 4. Papaveraceae, 112 



Stamen^ and petals 5. Violaceae, 164. 



