26 FAMILY KEY 



GROUP 18 Dicotyledonous herbs with alternate simple 

 leaves and polypetalous flowers with few stamens 



A. Peat bog plants; leaves all in a basal rosette, oblanceolate or spatulate, very con- 

 spicuously glandular-hairy, red or reddish green; leaf blades not over 2 cm. long. 



DROSERACEAE (p. 116) 



AA. Not peat bog plants; leaves not as above in all characters. 

 B. Two or more separate pistils to each flower. 



C. Leaves fleshy, pinnately veined or i-veined; pistils the same in number as the 

 sepals or the petals. CRASSULACEAE (p. 117) 



CC. Leaves not fleshy, or if so, palmately veined; pistils only rarely the same in 

 number as the petals or the sepals. 



D. Leaves either coriaceous and evergreen or else peltate; stamens 5-10, in- 

 serted on the calyx tube. SAXIFRAGACEAE (p. 118) 

 DD. Leaves not coriaceous and evergreen, not peltate; stamens rarely 5 or 10, 

 inserted on the receptacle. RANUNCULACEAE (p. 95) 

 BB. Only i pistil to each flower. 

 E. Leaves palmately veined. 



F. Plants with mustard or turnip taste; pod linear; sepals 4; petals 4; stamens 

 6. CRUCIFERACEAE (p. 106) 



FF. Plants without mustard or turnip taste; pod not linear; sepals none or 5; 

 petals 5; stamens 5 or 10. 



G. Flowers irregular; i petal spurred. VIOLACEAE (p. 153) 



GG. Flowers regular or nearly so; petals not spurred. 



H. Petals on the receptacle; ovary superior, 5-celled; flowers not in um- 

 bels. Geranium in GERANTACEAE (p. 143) 

 HH. Petals on the calyx; ovary superior or half inferior, i-2-celled; flowers 

 not in umbels. SAXIFRAGACEAE (p. 118) 

 HHH. Petals on the ovary; ovary inferior, 2-celled; flowers in umbels. 



UMBELLACEAE (p. 163) 

 EE. Leaves pinnately veined. 

 I. Ovary superior. 

 J. Plants with mustard or turnip taste; sepals 4; petals 4; stamens 6. 



CRUCIFERACEAE (p. 106) 



JJ. Plants without mustard or turnip taste; sepals and petals rarely 4; sta- 

 mens rarely 6. 



K. Flowers regular or very nearly so, not spurred. 



L. Leaves basal, linear, 2.5-7.5 cm. long, somewhat thick or fleshy; flowers 

 in a dense head, reddish; near the seashore. PLUMB AGIN ACE AE (p. 178) 

 LL. Leaves not as above in all characters; flowers not in a dense head. 

 M. Sepals 2. PORTULACACEAE (p. 86) 



MM. Sepals 3-8. 



N. Leaves coriaceous, evergreen, glabrous. 

 O. Carpels 2-4; styles or sessile stigmas 2-4. 



Saxifraga in SAXIFRAGACEAE (p. 118) 



OO. Carpels 5; style i; stigmas i or 5. PYROLACEAE (p. 169) 



NN. Leaves not coriaceous nor evergreen, often not glabrous. 

 P. Leaves very fleshy. 



