360 FLOWERS OF FIELD, HILL, AND SWAMP 



II. Crinkle-root. Pepper-root. Toothwort 



Denihria diph^lla. — Family, Mustard. Color, white. Leaves, 

 2, on the stem, whorled, petioled, each divided into 3 coarsely 

 toothed leaflets ; root-leaves similar. 7tme, May. 



Flowers in a terminal corymb. Rootstock edible, 5 to 10 

 inches long, often branched, crisp, tasting like water-cress. 

 Range from Maine to Kentucky. 



12. Round-leaved Violet 



^lofa rotundifblia. — Family, Violet. Color, yellow. Leaves, 

 ovate to roundish, heart-shaped, crenate, smooth, shiny. Time, 

 May. 



A short spur and the lateral petals marked with brownish lines 

 will help to distinguish this violet of the woods. 



At time of flowering, the leaves, erect, are quite small, i inch 

 broad. Later they become larger, 3 or 4 inches broad, and lie 

 prone on the ground. One often finds these leaves in summer 

 carpeting the woods without associating them with the pretty, 

 pale flower which accompanies them in spring. 



13. Long-spurred Violet 



V. rostrd,ta comes obviously by its name, its spur being 

 longer than the pale purplish petals. 



It is a low plant, with little to make it noticeable, and it is 

 besides somewhat rare. Found in New England and southward 

 along the Alleghanies. 



14. Canada Violet 



V. Canadensis is one of the tallest of our violets, growing to 

 a limit of 2 feet. Leaves, heart-shaped, acute, toothed; stip- 

 ules prominent. Flowers white, tinged with purple, on leafy 

 stems. 



Found in the Alleghany Mountains and northward. 



