Ovules few. Corolla twisted in the bud. Albumen of the seeds 

 scanty, mucilaginous. CONVOLVULACE^E. p. 262. 



Ovules numerous. Corolla plaited, valvate, or imbricate in the 

 bud. Albumen of the seeds abundant, flesh}-. 



Corolla plaited or valvate in the bud. SOLANACE.E.' p. 265. 

 Corolla imbricate in the bud. ATROPACE.*:. p. 266. 



12. Anthers united to the stigma. Seeds flat, contained in a follicle, 



and furnished with long, silky hairs. Leaves mostly opposite. 



AsCLEPIADACE.fi. p. 276. 



Anthers free from the stigma. 



Stigma with an hourglass-like contraction. Mostly with a milky 



juice. APOCYNACE.E. p. 274. 

 Stigma without a central contraction. 



Leaves with stipules. LOGANIACE.K. p. '278. 

 Leaves without stipules. 



Corolla twisted or plaited in the bud. Leaves mostly opposite or 



in whorls. Seeds numerous. G-ENTIANACE.E. p. 270. 

 Corolla imbricate in the bud. HYDROPHYLLACE.*:. p. 258. 



13. Stamens alternate with the lobes of the corolla. 14 



Anther-bearing stamens opposite the lobes of the corolla. 



Styles or stigmas five, rarely three or four. 



PLUMBAGINACE^. p. 222. 

 Style one. 



Fruit fleshy. Trees or shrubs. 



Fruit a capsule. Herbs. PRIMULACE*. p. 222. 



14. Ovules hanging downward. 15 

 Ovules erect or tending upward. 



Corolla imbricate in the bud. Leaves alternate. Trees or shrubs. 



SAPOTACE.*:. p. li'JO. 

 Corolla twisted in the bud. CONVOLVULACE.*:. p. 262. 



