CRUCIFEROUS TRIBE 21 



pouch nuc scaly ; style much longer than the notch ; anthers violet. 

 (These last two are common hedge plants, of erect growth and 

 downy habit, made more conspicuous by their hoary foliage and 

 numerous pouches than by their minute flowers. L. campestre is 

 an annual, and sends up a single stem. L. Smithii is perennial, 

 and sends up several stems, which are 

 woody near the base. The latter is the less 

 common of the two.) Fl. June to August. 

 Perennial. 



7. Cochlearia (Scurvy Grass) 



1. C . officinalis (Common Scurvy Grass). /' 

 Pouch nearly globose ; root-leaves heart- 

 shaped or kidney-shaped, stalked ; stem- 

 leaves oblong, sessile, slightly lobed, toothed 

 at the base, all fleshy and glabrous ; stem 

 often much branched ; flowers in rather 

 large corymbs, white. On the muddy sea- 

 shore, common. Fl. May. Annual. 



2. C. Anglica (English Scurvy Grass). 

 Pouch elliptical, inflated ; root-leaves oblong, 

 entire, stalked, not heart-shaped ; stem- 

 leaves oblong, toothed at the base, sessile. 

 Leaves more entire and pouches and flowers 

 larger than in the last. Seashores, common. Cochlearia Officinalis 

 Fl. May to August. Annual. {Common Scurvy Grass) 



3. C. Danica (Danish Scurvy Grass). 

 Smaller than either of the preceding ; 

 leaves all stalked, lobed, and nearly 

 triangular. Cliffs and hedges near the 

 sea, very common. Fl. March to June. 



^Annual. 



Two other forms are C. Alpina, not 



so large as C. officinalis, pods narrowing 



~ ~ at the ends ; and C. Grcenlandica. 



Cochlearia Danica ,, , . , T ' , ,, ,, , 



(Danish Scurvy Grass) Mountains, Northern Scotland. 



4. C. armor acia (Horse-radish). Root- 

 leaves stalked, toothed, often a foot long. Stem as much as 3 feet 

 high, stem-leaves almost stalkless ; flowers yellow, small. Remark- 

 able for its long, stringy roots, which have a pungent taste and arc 

 used in cooking. Really a garden plant, but has become established 

 in some places. Waste ground. Fl. June to August. Perennial. 



The plants of this genus derive their English name from the relief 

 the], afford to persons suffering from scurvy, a disease to which 

 sailors are particularly liable, in consequence of their being debarred 



