CHORIPETALAE 23 



244. (231.) Ovules attached to a single placenta 245 



Ovules attached to two or more placentas 248 



245. Sepals evidently united, rarely free or nearly so, and then petals 5 or 



leaves stipulate. Stamens usually perigynous. Stigma i. Leaves 



usually compound 105. Leguminosae. 



Sepals free or nearly so. Petals 2 — 4. Stamens hypogynous. Leaves 

 exstipulate, simple, but often dissected. Herbs or undershrubs. 246 



246. Flowers distinctly irregular. Sepals 5. Petals 2 — 4. Stamens numer- 



ous. Fruit opening at one side. Embryo straight. 



Delphinium, 78. Ranunculaceae. 



Flowers regular or nearly so. Sepals 4 or 8. Petals 4. Stamens 4 or 6. 



Fruit opening in two valves or remaining closed. Embryo more or 



less curved 247 



247. Stamens 4. Anthers opening by valves. Stigma i. Albumen abundant. 



Leaves dissected. Epimedium, 79. Berberidaceae. 



Stamens 6. Anthers opening by longitudinal slits. Albumen scanty or 

 wanting 88. Cruciferae. 



248. (244.) Style I, undivided, with a single stigma or with 2 or more stigmas 



contiguous at the base, or i sessile stigma 249 



Styles 2 — 6, free or more or less united with separated stigmas (not con- 

 tiguous at the base), or 2 — 6 free sessile stigmas 266 



249. Fertile stamens as many as petals or fewer, 2 — 10 250 



Fertile stamens more than petals 257 



250. Fertile stamens 10. Filaments united. Anthers opening outwards. 



Stigmas 5. Sepals 3. Trees. . Warburgia, 157. Winteranaceae. 

 Fertile stamens 2 — 6 251 



251. Fertile stamens 2 — 4. Flowers hermaphrodite. Seeds exalbuminous, 



with curved embryo 87. Capparidaceae. 



Fertile stamens 5, rarely (Passifloraceae) 4 or 6, but then flowers unisexual. 

 Seeds rarely exalbuminous, and then with straight embryo. . . 252 



252. Fertile stamens opposite the petals. Shrubs or trees 253 



Fertile stamens alternate with the petals. Leaves simple. Seeds al- 

 buminous 254 



253. Flowers irregular. Petals perigynous. Anthers opening by a single 



slit. Placentas 3. Seeds exalbuminous. Leaves pinnate. 



Moringa, 90. Moringaceae. 



Flowers regular. Anthers opening by 2 slits. Seeds albuminous. 



Leaves simple, undivided 159. Flacourtiaceae. 



254. Sepals united below. Petals perigjmous, sometimes nearly hypogynous, 



and then, as usual, staminodes or a corona interposed between the petals 



and the stamens. Flowers regular 161. Passifloraceae. 



Sepals free or nearly so. Petals hypogynous or nearly so ; in the latter 

 case neither staminodes nor a corona within them 255 



