DICOTYLEDONES— CALYCIFLOE.E 



363 



Carpels each with one hypogynous scale Crassulacece. 



Carpels without hypogynous scales . Saxifragacem 

 Styles more or less combined. {part). 



Calyx imbricate. Ovules suspended . BruniacecB. 

 Calyx valvate. 



Leaves simple. Calyx tubular LythracecB. 



b. Leaves with stipules. 



1. Carpels distinot, or solitary. 



Fruit leguminous ; odd lobe of the calyx in- 

 ferior 



Fruit not leguminous : odd lobe of the calyx 

 superior . 



2. Carpels more or less co')nhined [at least by 



their ovaries). 

 Placentas parietal. 



Flowers with a ring of appendages 

 Placentas in the axis. 



Styles distinct to the base. 

 Petals conspicuous. 

 Leaves opposite 

 Leaves alternate . 



Eosaceee. 



Cunomacece. 

 SaxifragacecB 

 (part). 



B. Ovary inferior, or partially so. 



u. Leaves without stipules, or with cirrhose ap- 

 pendages. 

 Placentas parietal. 



Flowers completely unisexual. Gamopeta- 



lous . . Ciccurhitacece. 



Flowers hermaphrodite or polygamous. 



Petals distinct . . Ribesiacees. 



Placentas in the axis. 



Flowers in umbels, or capitula. 



Styles two . . Umbelliferce. 



Styles three or more AraliacecB. 



Flowers not in umbels. 

 Carpel solitary. 

 Petals strap-shaped, reflexed . . Alangiacece. 



Petals oblong. 



Cotyledons convolute . CombretacecB. 



Cotyledons flat . . Saloragacece. 



Carpels two or more, divaricating at the 

 apex. 

 Leaves alternate. Herbs Saxifragacece 



{part). 

 Leaves opposite. Shrubs Hydrangeacece 



