KEY TO THE FAMILIES 



Leaves simple. 



Styles 2; fruit a berry 



Ribes in Saxifragaccre 40 



Style 1, 3-cleft; fruit a cap- 

 sule llliamnaceie 57 



Leaves opposite. 



Evergreen shrubs, less than 4 ft. 



high Celastracese 55 



Deciduous trees or tall shrubs. 



Leaves entire; style simple; fruit 



a drupe Cornacese 69 



Leaves coarsely-lobed; style 2- 

 branched; fruit a sa- 

 mara . . Aceraeeee 55 



Herbs. 



Ovary 1-celled. 



Corolla regular or nearly so. 

 Sepals 4 or 5. 



Stamens 8 Onagracere 62 



Stamens 5 or 10. 



Stamens alternate with the 



Petals Saxifragacere 38 



Stamens opposite the pet- 

 als Primulacere 69 



Sepals 2 Portulacacere 22 



Corolla irregular. 



Stamens 5, distinct, the anthers 

 forming a ring around the 

 pistil; lowest petal bluntly 



spurred Violaceee 59 



Stamens 6 in 2 equal sets 



Fuiiiariacese 28 



Stamens 10; monadelphous, or in 2 



sets of 9 and 1 . . Legumiiiosee 46 

 Ovary more than 1-celled. 

 Ovary "superior." 

 Ovary 2-celled. 



Root parasites without leaves 

 or green color; stamens 

 4 (2 long- and 2 

 short) . . . . Orobancliacere 88 

 Green plants with alternate 

 leaves; stamens 6 (4 

 long and 2 short), ex- 

 cept in Lepidium and 

 Streptanthus . Cruciferse 29 

 Ovary 5- (or imperfectly 10-) 



celled. 

 Leaves stipulate; stamens 10 



or 5 Geraiiiacere 52 



