MAY. 153 
TETRADYNAMIA. SILICULOSA. 
THALAMIFLOR®. CRUCIFERS. 
COCHLEARIA. (Scurvy-erass.) 
Generic Character. Seed-vessel oval or globular, having many 
seeds ; valves very convex, with a prominent rib at the back. 
The three following plants are often found on the sea 
coast, and particularly where the soil is muddy. Sand does 
not suit them. 
CocHLEARIA OFFICINALIS. (Plate X. Fig. 39.) Common 
Scurvy-grass. This species has the pouch globular; root- 
leaves stalked, kidney-shaped, and either entire or cut into 
lobes; those on the stem not stalked, and oblong; all 
fleshy. Flowers whitish. ' 
CocHLEARIA GREENLANDICA. Greenland Scurvy-grass. 
This is scarcely distinct from the last; the leaves are not 
notched at the edge, but the pouch is the same. It is fre- 
quent on the Highland mountains. 
Cocuiearta Anetica. Lnglish Scurvy-grass. Pouch 
elliptical and veiny. Lower leaves stalked, heart-shaped, 
and not cut. Upper ones oblong, a little toothed at the 
base. Smaller than officinalis. 
