514 SYSTEMATIC BOTANY. 



Seeds usually exarillate. Albumen 



ruminate Anonacece. A. 



2. Stamens united in one or more parcels. 

 Calvx much imbricated. 



Seeds smooth Hypericaceee. 36. 



Seeds shaggy Reaumur iacecE. 37. 



b. Carpels wholly combined into a solid pistil, 

 with more than one placenta. 

 Placentas parietal, in distinct lines. 



Anthers versatile. Juice watery . . Capparidaceee . 16. 

 Anthers innate. Juice milky . . . Papaveracece. 13. 

 Placentas parietal, spread over the lining of 



the fruit Tlacourtiaceee. 19. 



Placentas covering the dissepiments . . liymphceacecB. 10, 

 Placentas in the axis. 

 Stigma large, broad, and p«»taloid . . Sarraceniacece. 12. 

 Stigma simple. Calyx much imbricated. 



Leaves compound Rhixobolacece. 39. 



Leaves simple. 

 Petals equal in number to the sepals. 



Seeds few Clusinceee. 35. 



Seeds numerous. Petals flat . . MarcgraviacecB. 38. 

 Seeds numerous. Petals crumpled Cislacece. 18. 

 Petals not equal in number to the 

 sepals. Styles not perfectly com- 

 bined Ternstromiacea. 34. 



Stigma 6-lobed. Stamens monadelphous Humiriacece. 58. 



B. Leaves with stipules. 



a. Carpels more or less distinct, (at least as 



to the sti/les). 

 Carpels numerous Magnoliacece. 3. 



b. Carpels wholly combined into a solid pistil, 



with inore than one placenta. 



Placentas parietal Flacourtiacece . 19. 



Placentas in the axis. 

 Calvx with an imbricated aestivation. 



Flowers in vol iterate Chlcenaca. 33. 



Flowers not involucrate .... Cistacece. 18. 

 Calyx with a valvate aestivation. 

 Stamens monadelphous. Anthers 2-celled. 

 Filaments united into a column. Sta- 

 mens all perfect SterculiacecB . 29. 



Filaments not united into a column. 



Stamens partly sterile . . . ByttneriacetE. 30. 

 Stamens m nadelphous. Anthers 1-celled Malvacece. 28. 

 Stamens monadelphous. Calyx irregular, 



and enlarged in the fruit ' . . . Dipteracece. 32. 

 Stamens quite distinct .... Tiliacete. 31. 



2. Flowers Oligandrous Stamens less than 20. 



A. Leaves vnihoul stipules. 

 a. Carpels more or less distinct, or solitary. 

 Anthers with recurved valves . . , , Bcrbcridacece . 8. 

 Anthers with longitudinal dehisc<'nce 

 Albumen abundant, embryo minute. 

 Flower;! unisexual. Seeds usually nume- 

 rous L.ardizahalacea. S. 



Flowers polycamous. Seeds solitary or twin Xanthoxylacea. 60. 

 Flowers perfect. 



Kmbryo in a vitelluc Cabombacete. 9. 



Embryo not in a vit( llus. 

 Albumen homogeneous. 



Sepals 2 Fumariacece. 14. 



Sepals more than 2 . , . . Jianuncuiacetg. 1, 



