A GUIDE TO THE WILD FLOWERS 133 



in. wide, in a dense terminal raceme, white. Pods very numer- 

 ous, broadly oval, not over ^ in. wide. In fields and waste 

 places. New Brunswick and Ontario to Virginia, and west- 

 ward. May-July. Fig. 385. 



386. Wild Pepper-grass. Lepidium virginicum. Very like the 

 preceding, but the stem leaves short stalked and not clasping 

 the stem, the basal leaves cut into small segments towards 

 the base. In fields and waste places almost throughout North 

 America as a common weed. May-November. There are 

 several other closely related species. 



387. Field Penny-cress. Thlaspi arvense. An erect herb, 

 usually unbranched and under 18 in. high. Basal leaves nearly 

 oblong, but broadest towards the tip. Stem leaves clasping 

 the stem, broadly and shallowly toothed. Flowers white, very 

 small, in a terminal raceme. Fruit nearly round, about >^ 

 in. in diameter, distinctly notched at the tip. In waste places. 

 Quebec to N. Y., and westward. Native of Europe and Asia. 

 June-August. 



388. Hedge Garlic. Alliaria Alliaria. (Alliaria officinalis.) 

 An erect often branched herb 1-3 ft. tall wth broad alternate 

 long stalked leaves, which are oval or triangular, coarsely but 

 not sharply toothed, and 2-7 in. long. Flowers about }i in. 

 wide, white. Fruit about 13/2 in. long, scarcely Yio in. thick, on 

 a stout stalk. In waste places. Quebec and Ontario to Virginia. 

 Native of Europe. May. Fig. 388. 



389. Pepper-root. Dentaria laciniata. A low woodland plant, 

 not over 15 in. tall. Leaves usually 3, all stalked, deeply cut, 

 or divided finger-fashion, the segments toothed. Flowers 

 white, or whitish-pink, about ^ in. wide, in a loose terminal 

 cluster. Pods slender, about i]^. in. long. Quebec to Florida, 

 and westward. May. Fig. 389. A related species, of which 

 there are several, is D. diphyUa. It has mostly 2 stem leaves 

 which are 3-divided, but not deeply cut, and is found in woods. 

 Nova Scotia and New Brunswick to So. Carolina, and west- 

 ward. 



390. Meadow Bitter-cress. Cardaminc pratensis. A smooth 

 swamp or meadow plant with apparently compound leaves 

 actually deeply divided, feather-fashion. Segments of the 



