48 CRUC1FER.E. 



smaller than either of the preceding. FL March June. 

 Annual. 



* The plants of this genus derive their English name 

 from the relief which they afford to persons suffering 

 from scurvy, a disease to which sailors are particularly 



COCHLEARIA DANICA (Danish Scurvy Gra. 



liable, in consequence of their being debarred from the 

 use of fresh vegetables. Many other plants of the same 

 tribe possess antiscorbutic properties to an equal de- 

 gree ; but these are particularly available from always 

 growing near the sea. The use of lime-juice in the 

 navy and merchant service has of late years rendered 

 the attacks of this dreadful disease much less frequent 

 than they used to be. 



7. ARMORACIA. (Water fiadish). 



I. A. amphibia (Amphibious Yellow Cress, Great Water 

 Eadish). Leaves pinnatifid or deeply serrated; roots 



