892 COCHLEARIA. [class xv. order i. 



and more oblong siliquas, and by the back of the valves being marked 

 by numerous elevated netted veins. 



4. C. Dan'ica, Linn. (Fig. 1031.) Danish Scurvy Grass. Silicula 

 ovate, reticulated with prominent veins; leaves all petiolated, tri- 

 angular, lobate, smooth and fleshy. 



English Botany, t. 696. — English Flora, vol. iii. p. 177. — Hooker, 

 British Flora, ed. 4. vol. i. p. 249. — Lindley, Synopsis, p. 27. 



Root tapering, and with branched fibres. Stems mostly several, 

 spreading and erect, rarely branched, angular, smooth, slender. 

 Leaves all on slender channeled footstalks, smooth, dark green, fleshy, 

 the radical ones mostly heart-shaped at the base, and of three angular 

 lobes, the upper ones in three or five lobes, ovate. Lnfiorescence 

 terminal sub-corymbose racemes, of white flowers, becoming much 

 elongated when in fruit. Calijx of four ovate small purplish pieces, 

 with a narrow membranous margin. Petals four, rather small, white, 

 ovate. Fruit an ovate elliptical silicula, netted with somewhat elevated 

 veins. Style short. Stigma obtuse. Seeds small, ovate, brown, 

 about six in each cell. 



Habitat. — Muddy and stony places on the sea coast; less frequent 

 than the last species. 



Annual ; flowering in May and June. 



This is distinguished from the other species by its angular almost 

 deltoid leaves, and its elliptical silicula reticulated by slightly elevated 

 veins. 



5. C. Armora'cea, Linn. (Fig. 1032.) Horse Radish. Silicula 

 oblong ; stigma dilated, nearly sessile ; radical leaves oblong, crenated, 

 on long footstalks, the upper elongate, lanceolate, and linear. 



English Botany, t. 2323. — English Flora, vol. iv. p. 177. — Hooker, 

 British Flora, ed. 4. vol. i. p. 249. — Lindley, Synopsis, p. 27. 



Root long, cylindrical, white. Stem erect, about two feet high, 

 branched and spreading, smooth, furrowed. Leaves numerous, the 

 radical ones large, oblong, the margin waved and crenated, on long 

 thick stout channeled footstalks, those of the stem on shorter stalks, 

 the lower ones sometimes deeply cut in a pinnatifid manner, the upper 

 linear lanceolate, and crenated, or serrated, [sometimes entire. Lnfio- 

 rescence a large branched panicle, with sub-corymbose flowers, forming 

 in fruit elongated racemes. Calyx of four equal green pieces. 

 Corolla of four white ovate oblong petals, about as long again as the 

 calyx. Fruit an elliptic oblong smooth silicula, notched at the apex. 

 Style short. Stigma capitate, much dilated. Seeds seldom perfected. 



Llabitat. — In moist mountainous places in several parts of the 

 North of England and Scotland ; a doubtful native. 



Perennial; flowering in May. 



The root of Horse Radish is the well known condiment usually 

 brought to our tables with the national fare of roast beef. Jt has a 



