TEHON: FIELDBOOK OF NATIVE ILLINOIS SHRUBS 15 



F. Carpels 1 or several and distinct or united. 

 G. Ovary inferior, compound. 



H. Ovary 1-celled, becoming a 1-sceded 



drupe Loranthaceae, p. 71 



H. Ovary 6-celled, becoming a 6-celled, many- 

 seeded capsule Aristolochiaceae, p. 72 



G. Ovary superior. 



I. Carpels 3 to many, separate. 

 J. Fruit a 1-seeded achene with a persistent 



plumose style 



Clematis, in the Ranunculaceae, p. 74 



J. Fruit a thin-fleshed drupe 



. Calycocarpum, in the Menispermaceae, p. 76 

 I. Carpel 1 ; fruit a 1-seeded berry or drupe. 



K. Stamens 9, in 3 whorls Lauraceae, p. 82 



K. Stamens 8, opposite and alternate with the 

 corolla lobes. 

 L. Flowers perfect; alternate stamens longer; 



leaves alternate Thymelaeaceae, p. 206 



L. Flowers dioecious; stamens equal"; leaves 



opposite Elaeagnaceae, p. 208 



B. Both calyx and corolla, or at least a corolla, present. 

 M. Petals separate, or only 1 petal present. 

 N. Carpels 1 or several and distinct. 



O. Stamens inserted at the base of the receptacle. 

 P. Carpels 2 to 6, each maturing as a fleshy drupe 



Menispermaceae, p. 76 



P. Carpel 1, maturing as a 1- to few-seeded berry ' 



Berberidaceae, p. 80 



O. Stamens inserted on the margin of a disk which 

 often more or less incloses the gynoecium. 

 R. Flowers regular; petals 5. 



8. Carpels several or numerous, becoming fol- 

 licles, achenes or drupelets Rosaceae, p. 98 



S. Carpel 1, becoming a fleshy drupe 



Amygdalaceae, p. 139 



R. Flowers irregular ; petal 1 



Amorpha, in the Leguminosae, p. 144 



N. Carpels 2 to several, united basally or by their styles. 

 T. Ovary superior. 



U. Stamens inserted at the base of the receptacle. 

 V. Stamens more than 10 in number; leaves black 



dotted Hypericaceae, p. 200 



V. Stamens usually (but not more than) twice as 

 many as the petals. 



W. Ovary 1-celled Cistaceae, p. 204 



W. Ovary 2- to several-celled. 



X. Stamens 5 ; carpels united by their styles 



Zanthoxylum, in the Rutaceae, p. 149 



X. Stamens 2 to 4; carpels united basally 



Oleaceae, p. 244 



