TO 



CRUCIFERAE (MUSTARD FAMILY) 



2 divergent spurs of the corolla are longer than the pedicel and the 

 crest of the inner petals is minute. Frequent in rich woods. 



D. canadense, Squirrel Corn. Similar to the foregoing in general 

 aspect but with many distinctive characteristics. The root-stalks bear 



scattered grain-like 

 tubers. The corolla is 

 heart-shaped, the 

 spurs being very short 

 and rounded. The 

 crest of the inner pet- 

 als is conspicuous. 

 The flowers are green- 

 ish-white, tinged with 

 pink, and have the 

 fragrance of hya- 

 cinths. Rich woods. 

 April-May. 



CRUCIFERAE 



(Mustard Family) 



Herbs with a thin 

 and pungent juice, 

 and 4-parted, regu- 

 lar flowers. Sepals 

 4 and deciduous. 

 Petals 4, hypogy- 

 nous, their spread- 

 ing limbs forming a 

 cross. Stamens 6, 

 two of them in- 

 serted lower than 

 the others and 

 shorter. Leaves al- 

 ternate; stipules 

 none. Flowers in 



Dicentra. a, D. cucuUaria; 

 c, flower of D. canadense ^ 



h, underground stem; 

 d, underground stem. 



terminal racemes or corymbs. A large and natural family. 



DRABA 



Low, pubescent herbs with entire or tootlied leaves and white 

 or yellow flowers. 



