196 TETRADYNAMIA SILIQUOSA. Sinapis. 



shaped, or halbert-shaped. E. B. 1748. C. 5. 47- 

 Rapistrum arvorum. G. E. 233. 



Cornfields. 



An. Jtme. 



Root tapering, stiff. Stem one to two f., more or less branched, 

 slightly furrowed, leafy, rough. Ls. harsh, stalked ; upper ones 

 stalkless. Cal.-leaves linear, pale green. Cor. bright yellow, 

 rather large. Pet. always yellow, veinless. Siliq. about eight- 

 angled. 

 Seed mixed with, or instead of mustard. Anno^dng weed in the 



cornfields, of course, to be weeded early before seeding. Seed 



will vegetate after having lain many years deep in the ground. 



Young plant may be boiled and eaten. 



S. alba. Wliite M. Pods bristly, rugged, spreading, 

 shorter than their own broad and long sword-shaped 

 beak. Leaves lyre-shaped. E. B. 1677. C. 5. 46. 

 Sinapi album. G. E. 244. 



Cultivated, and waste ground. 

 An. June. 



Root small, tapering. Stem one to one ft. and a half, branched, 

 leafy, slightly furrowed, rough. Ls. rough, jagged, toothed, 

 lowest deeply wing-cleft, terminating segment very broad. CaL- 

 Is. linear, green, horizontal. Cor. yellow, claws long, rather 

 large. Fr.-stalks long, ascending. Seeds globose, yellow. Pod 

 beak rough. 



Young herb in salad, with cresses, Lepid. sativum. Seeds culi- 

 nary, medicinal. See Cidlen, ^c. 



S. nigra. Common M. Siliques four-cornered, smooth, 

 slightly beaked, close-pressed to the stalk. Lower 

 leaves lyre-shaped, wing-cleft ; upper linear-spear- 

 shaped. E. B. 969. Sinapi sativum pr. G. E. 244. 



Fields, waste ground. 

 An. July. 



Root small. Stem three to four f, upright, much branched, spread- 

 ing, smooth, leafy. Ls. lower, lobed and toothed, rough ; Is. of 

 the smaller branches hanging down. Fl. many, bright yellow. 

 Cal. somewhat yellow. Seeds round, smooth, brown. FL- 

 stalk short. 



Useful stimulant in cookery, and in medicine ; its continued use 

 not to be recommended. Powdered seeds, the common mustard 

 for the table. Yield an oil not of much acrimony. A table 

 spoonful of the whole seeds aperient : powdered, curdle milk, 

 bruised infused seeds emetic ; in cataplasm, as a stimulant applied 

 to the soles of the feet, in sinking stage of fever : topically, in rheu- 

 matic pains. Ls. in spring may be boiled, and eaten. See 

 Cullens Mat. Med. 



