DICOTYLEDONES— DISCIFLOR^ 



329 



Stamens more or less perigynous. 

 Flowers irregular, ovules suspended 

 Flowers regular, ovules erect 

 Calyx imbricate. 

 Style gynobasic. 

 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 

 broken 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 4 or more. 

 Seeds winged 

 Seeds wingless. 



Stamens united into a long tube . 

 Stamens distinct, or nearly so. 

 Leaves dotted. 



Seeds amygdaloid . J 



Leaves without dots. 

 Seeds erect 

 Carpels less than 4. 

 Petals imbricate. 

 Ovules suspended 

 Ovules erect 



Troymolaceoi. 

 Limnantliacete. 



Sunanii 



Mutacece. 

 Xanthoxylece of 

 ButacecB. 



BaUa7ni)iacece . 



Sapindacvif. 

 Aceracece. 



Cedrelacece. 

 Meliaeece. 



Aurantiece of 

 Buiacece. 



Celastracecv. 



Cyrillacece. 

 Celastracece. 



B. Leaves gener all y with stipules. 



ix. Carpels distinct, or solitary. 



Carpels several .... Corlariaccce. 



b. Carpels wholly combined {at least as to their 

 ovaries), with more placentas than one. 

 Placentas parietal Morlngacece. 



Placentas in the axis. 



Styles distinct to the base. 



Petals conspicuous, stalked Malpighiacem. 



Styles more or less combined, gynobasic, 



Gynobase fleshy . Ochnacece. 



