SPECIES AND VARIETIES. 201 



toothed, on long stalks, those of the stem oblong or broadly 

 lanceolate, 2-3 inches long, the upper sessile, tapering at the 

 base ; flowers small, white ; pods with the valves scarcely 

 keeled, the style almost imperceptible. Salt-marshes. Fl. 

 July. 



(37) Capsella. 



C. Bursa-pastoris : annual ; root-leaves spreading, pinna- 

 tifid ; stem ^--1 foot high, rather rough, with a few oblong or 

 lanceolate, entire or toothed, clasping leaves, having projecting 

 auricles ; pods in a long, loose raceme, triangular, truncate at 

 the top, with the angles slightly rounded. Shepherd's Purse. 

 A common weed. Fl. nearly all the year. 



(38) Cochlearia. SCURVY GRASS. 



C. officinalis : annual or biennial ; stems seldom above six 

 inches long, diffuse, glabrous, and somewhat fleshy; leaves 

 stalked, orbicular or rernform, the upper ones ovate or oblong, 

 sinuate, sessile ; flowers white, in short racemes, the petals 

 obovate, spreading ; pods globular or obovate. Muddy or 

 sandy soils on the sea-coasts. Fl. June to August. 



Var. danica : leaves stalked, the lower cordate, lobed, the 

 upper 3-5-lobed, subdeltoid ; pods ovate. Sea-coast. 



Var. anglica : leaves ovate-oblong, entire, the upper oblong 

 often toothed, sessile ; flowers large ; pods ovate-oblong. Sea- 

 coast. 



(39) Armoracia. HORSE-RADISH. 



A. rusticana : stems 2-3 feet high, erect ; leaves on long 

 stalks, J-l foot long, and 4-6 inches broad, sinuate and 

 toothed at the edges, glabrous but rough, the lower stem- 

 leaves often deeply toothed, almost pinnatifid ; flowers small, 

 white, in numerous racemes, forming a terminal panicle; 



