129 



ORDER 2. SILIQUOSA. 



Seed-vessel a long narrow pod. 



BITTER-CRESS, (Cardamine.) Pod long, thin ; valves flat, 

 without veins. 



WINTER-CRESS, (Barbarea.) Pod two-edged ; valves veined 

 or keeled. 



CRESS, (Nasturtium.) Pod round, sides hollow, neither valved 

 nor keeled. 



HEDGE^MUSTARD, (Sisymorium.) Pod rounded; calyx spread- 

 ing. 



TREACLE-MUSTARD, (Erysimum.) Pod four-sided ; calyx 

 erect. 



WALLFLOWER, (Cheiranthus.) Pod flattened or two-edged. 



CABBAGE, (Brassica.) Pod two-valved, rounded, with a long 

 beak ; calyx erect. 



MUSTARD, (Sinapis.) Pod two-valved, round ; calyx spreading, 



RADISH (Rhaphanus.) Pod without valves ; calyx erect. 



WART-CRESS. CORONOPUS. 



COMMON WART-CRESS. SWINE'S CRESS. C. Ruellii. 

 Plate 9, fig. 16. 



In dry places, such as in waste ground, brick-fields, chalky 

 road-sides, &c. It is a bushy and spreading plant, not 

 growing above a few inches in height. The flowers are very 

 small, white, and in thick bunches from the base of the stalk 

 of the leaf. The pouch which succeeds is large in proportion 

 to the flower, beautifully crested, and contains two seeds. 

 Leaves much cleft into narrow stripes. The whole plant is 

 smooth, and tastes warm, like the common Garden Cress ; thus 

 it is often called Pepper-wort. 



O. S. Smaller Wart-cress, which is not uncommon in the South of 

 England. 



SHEPHERD'S PURSE. CAPSELLA. 

 COMMON SHEPHERD'S PURSE. Capsella Bursa-pastoris. 



Plate 9, fig. 17. 

 By the sides of roads and on waste grounds everywhere, in 



