22 FAMILY KEY 



B. Leaves often with air bladders; corolla 2-lipped; pistil i. 



Utrkularia in PINGUICULACEAE (p. 210) 



BB. Leaves without bladders; corolla of 5 similar separate petals; pistils several. 



RANUNCULACEAE (p. 95) 

 AA. Plants mostly of drier habitat; leaves with wider segments or leaflets. 



C. Petals none or distinct to base. 

 D. Ovary superior. 



E. Flowers regular. 

 F. Pistils more than i. 



G. Stamens on the calyx though often near its base; stipules usually present. 



ROSACEAE (p. 125) 



GG. Stamens on the receptacle; stipules none. RANUNCULACEAE (p. 95) 

 FF. Pistil i. 

 H. Leaves ternately or palmately compound. 



I. Leaflets or leaf segments 3-5. 



J. Styles 2; stamens 5 or 10. SAXIFRAGACEAE (p. 118) 



JJ. Style i; stamens neither exactly 5 nor 10. 



CAP? ARID ACE AE (p. 1 1 6) 



II. Leaflets or leaf segments more than 10. 



K. Flowers white; sepals 4-6. Eschscholtzia in PAPAVERACEAE (p. 104) 

 KK. Flowers yellow; sepals 2. RANUNCULACEAE (p. 95) 



HH. Leaves pinnately compound. 



L. Plants with mustard or turnip taste; stamens usually 6, tetradynamous. 



CRUCIFERACEAE (p. 106) 

 LL. Plants without mustard or turnip taste; stamens very rarely 6, not 



tetradynamous. 



M. Flowers in spikes or racemes; stigma i; ovary simple; plants of mead- 

 ows. ROSACEAE (p. 125) 

 MM. Flowers solitary in the leaf axils; stigmas 2-5; ovary compound; 

 plants of wet places. LIMNANTHACEAE (p. 146) 

 EE. Flowers irregular. 



N. Stamens 5 or 10; pistil i. LEGUMINACEAE (p. 135) 



NN. Stamens 12 to many; pistils very rarely only i. 



O. Sepals 4; plants glandular-pubescent. CAPPARIDACEAE (p. 116) 



OO. Sepals 5 ; plants not glandular. RANUNCULACEAE (p. 95) 



DD. Ovary inferior. 



P. Flowers in compound umbels; ovary 2-celled or the 2 carpels almost separate ; 

 fruit dry. UMBELLACEAE (p. 163) 



PP. Flowers in umbels; umbels in simple or compound panicles; ovary 2-5- 

 celled; fruit fleshy. Aralia in ARALIACEAE (p. 162) 



CC. Petals more or less united, but sometimes only at their very base. 

 Q. Corolla irregular. 



R. Sepals 4-5, more or less united; petals 5; stamens 5 or 9 or 10; pistil simple; 



stipules present. LEGUMINACEAE (p. 135) 



RR. Sepals 2, separate; petals 4; stamens 6; pistil compound; stipules none. 



FUMARIACEAE (p. IOS) 



Q. Corolla regular or very nearly so or none at all. 

 S. Ovary superior or mainly so. 

 T. Leaflets 3, not spinelike, not spine-tipped; styles or stigmas i or 5. 



