Ranunculaceae 91 



Stem leaves three in a whorl. 



Styles short, smooth or hairy. Anemone. 



Styles long, plumose. Pulsatilla. 



Stem leaves alternate or basal. 



Petals none, flowers small; leaves compound. 



Thalictrum. 

 Petals present. 



Flowers white. Batrachium. 



Flowers yellow. 



Achenes papillose or spiny. Ranunculus. 

 Achenes longitudinally nerved. Halerpestes. 

 Carpels with several ovules ; fruit, follicles or berries. 

 Flowers regular. 

 Leaves simple. 



Petals none; leaves cordate-orbicular. Caltha. 

 Petals linear-spatulate ; leaves palmately 



parted. Trollius. 



Leaves compound. 



Sepals spurred; carpels becoming follicles. 



Aquilegia. 

 Sepals not spurred; carpels becoming berries. 



Actsea. 

 Flowers irregular; upper sepals spurred. 



Delphinium. 



A climbing or trailing vine with 

 Atragene 



coiumbiana somewhat woody stems. Leaves 

 Nutt. Pur- trifoliate, the leaflets thin, on 

 pie Virgin's- s i en( } er pe tioles, ovate, attenu- 

 ate, acute, and entire, 2-3 inches 

 long. Flowers purple, 1^-2 inches broad, on 



