CRUCIFEROUS TRIBE 



29 



23. Brassica (Cabbage) 



1. B. tenuifolia (Wall Rocket). — Stem erect, slender, smooth, 

 leafy ; leaves narrow, smooth, deeply divided into narrow segments ; 

 pods lined, slightly heaked, erect. A slender, branched plant, 

 from 1-2 feet high, with a tough stem, woody below, scattered 

 foliage, and large light }?el]ow flowers ; it grows on old walls, 

 quarries, and waste places, principally in the neighbourhood ol 

 large towns. — Fl. all the summer. Perennial. 



2. B. niuyalis (Sand Rocket). — An annual, with a bristly stem, 

 is very like the last, but smaller, and grows in barren places near 

 the sea, but is not considered indigenous. 



3. B. Monensis (Isle of Man Cabbage). — Leaves glaucous, pinna- 

 tifid ; stem nearly leafless, and 6-12 inches high ; pods 4-angled ; 

 flowers bright lemon-coloured, veined with purple. Sandy sea- 

 shores on the western coast of Britain, rare. — Fl. summer. Per- 

 ennial. 



4. B. oleracea (Sea Cabbage). — Root stem-like, fleshy; stem 

 branched, T-2 feet liigh ; leaves perfectly smooth, glaucous, waved, 

 lobed ; stem-leaves oblong, obtuse ; flm&ers lemon-coloured and 

 large. The original of all the varieties of garden cabbage 

 growing on several parts of the sea-coast. — Fl. May to August. 

 Biennial. 



5. B. campestris (Common Wild Navew). — Root-leaves pinnate, 

 with rounded terminal lobe, toothed, rouglnsh ; 

 stem-leaves smooth, heart-shaped, tapering 

 to a point ; all somewhat glaucous ; stem 

 about 2 feet high, usually unbranchcd. 

 Borders of fields, common. Often con- 

 founded with Charlock, from which, how- 

 ever, it may readily be distinguished by 

 the smoothness and glaucous hue of its 

 upper leaves. — Fl. June, July. Annual. 



B. rapa, Rape or Colza ; B. rutabaga, 

 the Swedish turnip, commonly known as 

 Swede ; and B. napits, the Turnip, are all 

 varieties in cultivation. 



6. B. alba (White Mustard).— Po(^s bristly, 

 rugged, spreading, shorter than the flat two- 

 edged beak ; leaves pinnatifid ; flowers rather 

 large, yellow. The young leaves of this 

 I)lant are used as salad. Waste ground.— beassica Campestris 

 FL June, July. Annual. {Common Wild Navew] 



