DICOTYLEDONES— DISCIFLORiE 



329 



Stamens more or less perigynous. 

 Flowers irregular, ovules suspended 

 Flowers regular, ovules erect 

 Calyx imbricate. 

 Style gjaiobasic. 



Stamens arising from scales 

 Stamens not arising from scales. 

 Styles wholly combined. 

 Flowers perfect 



Flowers polygamous . . -j 



Styles divided at the apex. 



Flowers irregular, fruit usually with 

 elastic valves .... 

 Style not gynobasic. 



Calyx much imbricate, in an irregular 

 bi'oken whorl. 

 Petals with appendages at their base. 

 Leaves alternate .... 

 Petals without appendages at their 

 base. Leaves opposite 

 Calyx but little imbricate, in a complete 

 whorl. 

 Carpels i or more. 



Seeds winged ..... 

 Seeds wingless. 



Stamens united into a long tube . 

 Stamens distinct, or nearly so. 

 Leaves dotted. 



Seeds amygdaloid . 



Leaves without dots. 

 Seeds ei'ect . 

 Carpels less than 4. 

 Petals imbi'icate. 

 Ovules suspended 

 Ovules erect 



I 



Tropceolacece. 



Liinnanthacece. 



Simaruhacece. 



Butacece. 

 Xanthoxylece of 

 Butacece. 



BalsaminacecB. 



Sapiudacece. 

 Aceracece. 



Cedrelacece. 

 Meliacece. 



AuraiiHecE of 

 Butacece. 



CeJastracecE. 



Cyrillacece. 

 Celastracece. 



B. Leaves generoUy with stipules. 



a. Carpels clisti>ict, or solitary. 



Carpels several ....... Coriariacece. 



b. Carpels u-holly comhinecl {at least as to their 



ovaries), ivith more placentas than one. 

 Placentas parietal ...... Moringacece. 



Placentas in the axis. 



Styles distinct to the base. 



Petals conspicuous, stalked . . . Malpighiacecs. 

 Styles more or less combined, gynobasic. 



Gynobase fleshy ...... Ochnacece. 



