CHORIPETALAE 27 



284. Sepals 4. Petals 4. Stamens 2 — 6. Glands present between the sta- 



mens 88. Cruciferae. 



Sepals 5. Petals ^ — 5. Stamens 5 — 10, united at the base. 



Limeum, 72. Aizoaceae. 



285. (277.) Flowers irregular. Petals 4 — 5. Stamens 10 — 20. Ovary 2- 



celled. Style basal. Stigma i. . . Parinarinm, 103. Rosaceae. 



F"lowers regular. Petals 4 — 8. Stamens 4 — 8. Style terminal or nearly 



so 286 



286. Petals, stamens, and carpels 8 each. . Dirachma, 107. Geraniaceae. 

 Petals 4 — 5. Stamens 4 — 5. Carpels 2—5 287 



287. Calyx with valvate aestivation. Stamens opposite the petals. Style i, 



with a more or less deeply divided stigma, or several styles. 



137. Rhamnaceae. 



Calyx with imbricate or open aestivation. Stamens alternate with the 



petals. Style i, with an entire or lobed stigma. 129. Celastraceae. 



288. (274.) Flowers unisexual 289 



Flowers hermaphrodite or polygamous 293 



289. Leaves simple. 290 



Leaves compound. Shrubs or trees 293 



290. Sepals 2 — 3, united below, valvate in bud. Petals 5, with contorted 



aestivation. Stamens numerous. Ovary 2-celled. Style wanting ; 



stigma lobed. Shrubs or trees. . . Carpodiptera, 141. Tiliaceae. 



Sepals, at least in the female flowers, 4 — 6, sometimes almost wholly 



united 291 



291. Ovary slightly sunk in the receptacle, 2-celled. Styles 2. Stamens 5. 



Anthers opening by valves. Sepals and petals valvate in bud. Shrabs. 



Trichocladus, 101. Hamamelidaceae. 



Ovary wholly superior, usually 3-celled. Styles usually 3. Anthers 



opening by longitudinal slits 292 



292. Ovules straight. Stigmas sessile or nearly so. Stamens 10. Calyx- 



limb nearly entire. Fruit drupaceous. . Panda, 106. Pandaceae. 

 Ovules inverted 122. Euphorbiaceae. 



293. Leaves stipulate. Ovary surrounded by scales. Fruit capsular. Spiny 



shrubs Neoluederitzia, 113. Zygophyllaceae. 



Leaves exstipulate. Fruit usually drupaceous. . 127. Anacardiaceae. 



294. (288.) Flowers distinctly irregular 295 



Flowers regular or nearly so 298 



295. Leaves compound. Receptacle expanded into a disc or elongated into a 



stalk. Filaments free. Trees or shrubs. . . 127. Anacardiaceae. 

 Leaves simple, undivided. Receptacle small 296 



296. Stamens 10. Shrubs or undershrubs 119. Malpighiaceae. 



Stamens 5—8 297 



