120 THE CABBAGE FAMILY. 



23. Navew — [Brdssica campisiris.) 

 Cultivated fields and waste places, common. Fl. June, July. 



Annual. 



E. B. xxxii. 22;i4. 



Often confounded with charlock, the Sinapis arvensis, from which, however, ii 

 may readily be distinguished by the smoothness and glaucous hue of its upper 

 leaves. 



24. Rape — {Brdssica Ndpus.) 

 Ploughed fields and waste places, a descendant of cultivation. 

 Frequent on the banks of the BoUin, below Bowdon. Fl. May, June. 



Biennial. • 



E. B. XXX. 2146. 



25. TtTRNip — {Brdssica Rdpa.) 

 In similar situations, and of corresponding origin. Fl. April, May. 



Biennial. 



E. B. xxxi. 2176; Baxter, vi. 458. 



26. Charlock — {Sinapis arvensis.) 



Common among corn and other field crops. Fl. May, June. Annual. 



Curtis, ii. 339; E. B. xxv. 1748. 



The purple colour of the stalks about the joints is often a ready mark of this 

 farmer's pest. 



27. Grocers' Mustard — {Sinapis nigra.) 

 Occasionally in waste places and by waysides, a runagate more or 

 less recent, from neighbouring gardens. Fl. June, July. Annual. 

 E. B. xiv. 969 ; Baxter, v. 336. 



The seeds supply the mustard of the cruet-stand. Salad-raustard is the 

 Sindpis dlba. (Curtis, ii. 338.) 



28. Wild Radish — {Rdphanus Raphanistrum.) 

 Among the crops on ploughed land, common, the lUac variety most 

 usual, though lilac, white, and yellow sometimes mingle in the same 

 field. Fl. June, July. Annual. 



Curtis, ii. 266 ; E. B. xii. 856 ; Baxter, v. 359. 



The ornamental Cruoiferee grown in gardens are as numerous as the wilU 

 species. Here we can only mention the white Arabis or mountain-snow, one of 



