CHORIPETALAE 21 



Style terminal or nearly so. Stamens hypogynous, rarely perigynous, 

 but then leaves opposite. 221 



221. Stamens 5, perigynous. Sepals united below. Leaves opposite. Shrubs 



or trees Pleurostylta, 129. Celastraceae. 



Stamens 6, hypogynous. Sepals free. Leaves alternate. . . . 222 



222. Flowers irregular. Sepals 2. Petals 4. Fruit a 2-seeded nut. Herbs. 



Leaves dissected Sarcocapnos, 86. Papaveraceae. 



Flowers regular. Sepals 3 — 6. Leaves undivided 223 



223. Perianth of 4 sepals and 4 petals. Anthers opening by longitudinal 

 slits. Style distinctly developed. Fruit a i-seeded nut. Under- 

 shrubs. Flowers white. . . . Dipterygium, 87. Capparidaceae. 



Perianth of 3 — 6 sepals, 3 petals, and 6 honey-scales. Anthers opening by 

 valves. Style none. Fruit a berry. Shrubs. Flowers yellow. 



Berber is, 79. Berberidaceae. 



224. (215.) Ovules suspended from a free central placenta. Stamens 4 — 10. 



Shrubs or trees. Leaves undivided, exstipulate. 59. Olacaceae. 



Ovules attached to the wall of the ovary, usually near the apex. . . 225 



225. Ovules one above the other, rarely side by side ; in the latter case flowers 



irregular with q — 10 stamens. Leaves usually compound and stipulate. 



105. Leguminosae. 



Ovules side by side or one opposite the other. Flowers regular, rarely 



somewhat irregular, but then stamens 3 — 6 226 



226. Ovules attached laterally. Stamens 3 — 5. Flowers usually unisexual. 



Embryo large. Leaves exstipulate, usually compound. 115. Rutaceae. 



Ovules attached by the apex, rarely laterally, but then stamens more than 



5. Flowers usually hermaphrodite. Leaves simple 227 



227. Stamens 4 — 3. Shrubs or trees. Leaves exstipulate. 



132. Icacinaceae. 

 Stamens 6 or more 228 



228. Stamens 6. Style i. Sepals 4. Petals 4. Embryo curved. Leaves 



exstipulate 88. Cruciferae. 



Stamens 10 or more. Leaves undivided, stipulate. Shrubs or trees. 229 



229. Stamens 10, hypogynous. Styles or stigmas 3 — 4. Sepals 5. Petals 5. 



Erythroxylon , 112. Erythroxylaceae. 

 Stamens 12 or more 230 



230. Style I, with a single stigma. Stamens 12 — 20, perigynous. Sepals 



5 — 12. Petals 5 — 12. Seeds with scanty albumen or without any. 



103. Rosaceae. 



Styles 2 — 6 or style i with 2 stigmas ; in the latter case stamens more 



then 20. Seeds with copious albumen. . . 159. Flacourtiaceae. 



231. (214.) Ovules basal or attached to a central placenta 232 



Ovules attached to one or more parietal placentas 244 



