RANALES BUTTERCUP ORDER 



RANUNCULACEAE BUTTERCUP FAMILY 



Sepals 3-15, separate, often petal-like, petals 3-20, or none, separate, 

 stamens many, pistils many, few or none, the ovary 1-celled, fruit an achene, 

 follicle or berry, 1 -many-seeded ; flowers regular, sometimes irregular, usu- 

 ally clustered ; annual or perennial herbs, rarely woody shrubs or climbers, 

 with simple or compound leaves. 



I. Flowers regular 



1. Petals and sepals both clearly present 



a. Petals spurred AQUILEGIA 



b. Petals not spurred 



(1) Pistils several to many in each flower 



(a) Flowers greenish, tiny MYOSURUS 



(b) Flowers yellow or white RANUNCULUS 



(2) Pistil 1 ACTAEA 



2. Petals lacking, sepals often petal-like 



a. Sepals petal-like, white or colored 



(1) Leaves opposite; often climbing or trailing CLEMATIS 



(2) Leaves alternate 



(a) Stem with a whorl of leaves, i. e., an in- 



volucre, below the flower 

 x. Flowers 1-4 cm. wide; styles short, not 



plumy ANEMONE 



y. Flowers 4-8 cm. wide ; styles long and 



plumy PULSATILLA 



(b) Stems leafy, without an involucre 



x. Leaves simple, toothed CALTHA 



y. Leaves deeply cleft or divided TROLLIUS 



b. Sepals green or greenish- white, small THALICTRUM 



II. Flowers irregular 



1. Upper sepal spurred DELPHINIUM 



2. Upper sepal hood- or helmet-like ACONITUM 



