gS RANUNCULACEAE (BUTTERCUP FAMILY) 



I. Flowers white; stems submerged; leaves filiform when submerged; 

 akenes transversely rugose; petals with a naked spot or pit at base. 



BATRACHIUM (p. loo) 

 n. Flowers yellow; stems mostly not submerged; rarely the leaves fili- 

 form; akenes not transversely rugose; petals with a small scale at the 

 base of the claw. RANUNCULUS (p. loi) 



DD. Leaves compound. 

 J. Petals not red; flowers often small; fruit of follicles or akenes, or a red 



berry. 

 K. Fruit of akenes, these each i-seeded. 

 L, Petals present; leaves rarely temately more than i-compound; inflores- 

 cence either not panicles nor racemes, or else flowers large; flowers perfect. 

 (See HH.) 

 LL. Petals none; leaves ternately 2-3-compound; inflorescence panicles or 

 racemes; flowers small, mostly not perfect. THALICTRUM (p. 102) 



KK. Fruit of follicles or berries, these each several-seeded. 

 M. Fruit of follicles; carpels 2 or more (except sometimes in Cimifuga 

 elata). 



N. Leaves withering in the fall, not all basal; follicles sessile or short- 

 stalked, in heads. 

 O. Stems 9-24 dm. high, many-flowered. CIMIFUGA (p. 98) 



00. Stems 0.5-3 dm. high, i- to several-flowered. ISOPYRUM (.p. 97) 

 NN. Leaves green throughout the winter, all basal; follicles long-stalked, 

 in umbels. COPTIS (p. 97) 



MM. Fruit a red berry; carpel i. ACTAEA (p. 97) 



JJ. Petals red; flowers large; fruit of many-seeded follicles. E. — (Honor of 

 Paeon, a Greek physician.) Paeonia brownii (peony) 



CO. Flowers irregular; leaves palmately-lobed or -cleft or -divided. 

 P. Upper sepal spurred. DELPHINIUM (p. 98) 



PP. Upper sepal arched into a hood. ACONITUM (p. 99) 



BB. Flowers regular; petals 5, each with a long tubular spur; leaves ternately 

 1-3-compound. AQUILEGIA (p. 98) 



AA. Stem leaves opposite or whorled. 



Q. Stem herbaceous, erect ; stem leaves in a single whorl of 2-3. 

 R. Style short, glabrous or pubescent, not plumose. ANEMONE (p. 99) 



RR. Styles long, filiform, becoming plumose. W. C. E. — (Perhaps diminutive 

 of L. pulsare = to beat or pulse; appUcation not dear.) 



Pulsatilla occidentalis (PASQtrE FLOWEs) 



QQ. Stem of ten woody, erector viney; stem leaves more than 3, opposite; style 



plumose. CLEMATIS (p. 100) 



CALTHA (Marsh Marigold) 



Herbs, glabrous. Leaves mostly basal, cordate or reniform. Flowers 

 white or yellow or pink. Sepals petal-like, large, deciduous. Stamens 

 many. Pistils S-iS> sessile. — Marsh plants. (Gk. kalalhos = a goblet ; 

 referring to the form of the flower.) 



A. Stem decumbent, several-leaved; flowers yellow; follicles sessile. W. — Poi- 

 sonous. C. palustris 



