xxxviii General Key to Families 



Leaves not evergreen, simple, lobed, 



or much divided. 

 Smooth. 



Stems erect or floating. 



Ranunculaceae. 



Stems creeping. 



Flowers white or pink. 



Rosaceae. 



Flowers yellow. Ranunculaceas. 

 Rough-hairy. 



Flowers yellow or pink. Rosacese. 

 Flowers white, blue or purple. 



Ranunculaceae. 

 Leaves mostly on the stem. 



Leaves finely cut; stems creeping; 

 flowers white. Rosacese. 



Leaves entire. 



Leaves bright green, black dotted; 



flowers yellow. Hypericacege. 



Leaves glaucous, without black dots ; 



flowers blue. Linacese. 



(e) Flowers with 5 sepals and 5 united petals 



or lobes. 



tStamens 3; flowers small, in terminal 

 clusters. Valerianacese. 



ft Stamens 5. 



Opposite to the corolla lobes. 



Primulaceae. 

 Alternate with the corolla lobes. 



Stems smooth, leafy; corolla cam- 



panulate. 



Stem leaves broad; flowers pink. 

 Apocynaceae. 



Stem leaves narrow; flowers blue 

 Campanulaceae. 



