122 



CRUCIFERAE. 



[VOL. II. 



i. Barbarea Barbarea (I,.) MacM. 



2. Barbarea stricta Amir/. Krect- 

 f ruited Winter Cress. ( Fig. 1710.) 



Barbarea stricta Andrz. in Bess. Kmim. PI. 



Volh. 72. 1821. 

 Rarbarea vulgaris var. stricta A. Gray, Man. 



Ed. 2, 35. 1856. 



Similar to the preceding species, about 

 equally tall. Lateral segments of the leaves 

 comparatively larger; pods obtusely or ob- 

 scurely 4-angled, about i' long, erect and ap- 

 pressed against the rachis of the raceme on 

 erect or ascending slender pedicels. 



In fields and waste places, Quebec to Minne- 

 sota and the Northwest Territory, south to 

 Florida and Nebraska. The plant is certainly 

 naturali/i-d from Europe in the Kast, but is im- 

 ported as indigenous in the Northwest. It is 

 very abundant in northern Europe and Asia. 

 Leaves shining above. April-June. 



Yellow Rocket or Cress. (Fig. 1709.) 



Erysimum Barbarea L. Sp. PI. 660. 1753. 

 Barbarea vulgaris R. Br. in Ait. Hort. Kew. Ed. 



2, 4: 109. 1812. 

 Barbarea vulgaris var. arcuala A. Gray, Man. 



Ed. 2, 35. 1856. 

 Barbarea Barbarea MacM. Met. Minn. 259. 1892. 



Tufted, stems erect, i-2 high. Lower 

 leaves petioled, 2 / ~5 / long, pinnatiful; ter- 

 minal division much larger than the 1-4 

 pairs of lateral ones, all oval or obovate, 

 repand-toothcd or sometimes entire; upper 

 leaves sessile or nearly so, sometimes clasp- 

 ing; flowers bright yellow, 3 // -4 // broad; 

 pods spreading or ascending, about i' long, 

 obscurely 4-angled; pedicels about 2" long. 



In fields and waste places, Labrador to south- 

 ern New York and Virginia and locally in the 

 interior. Also on the Pacific coast. Naturalized 

 from Europe. Leaves thickish, shining above. 

 April-June. Also called Bitter, Winter or 

 Rocket Cress. 



3. Barbarea praecox (J. E. Smith) 



R. Br. Early Winter or Belle 



Isle Cress. ( Fig. 1711.) 



imum praeco.v J. E. Smith, Fl. Brit. 2: 707. 



1800. 

 Barbarea praecox R. Br. in Ait. Hort. Kew. Ed. 



2, 4: 109. 1812. 



Closely resembles the last species. Divi- 

 sions of the leaves more numerous (4-8 

 pairs); pods sharply 4-sided, slightly com- 

 pressed, i^ / -3 / long, borne on stout pedicels. 



In waste places, southern New York, Penn- 

 sylvania and southward. Adventive from Eu- 

 rope. Sometimes cultivated for salad. Re- 

 ferred by Hooker and Thomson (Journ. Linn. 

 Soc. 5: 139) to a variety of B. vulgaris and so 

 regarded by Bentham and other English botan- 

 ists, but its characters appear to be constant. 

 In the Southern States called Scurvy-grass. 

 April-June. 



