TETRADYNAMIA— SILICULOSA. Cochlearia. 177 



prostrate ; but its general size is scarcely half that of the Com- 

 mon Scurvy-grass. The stem-leaves are narrower, often almost 

 entire ; radical ones much smaller in proportion to the rest, 

 ovate, entire, rarely wavy, or slightly toothed. Fl. white or 

 faintly tinged with purple, often very little different from the 

 first species, though frequently larger. The pouches afford a 

 striking and essential distinction, being twice as large, ellipti- 

 cal, not globose, strongly marked with abundance of prominent 

 reticulated veins, and tipped with a much more elongated style. 

 Seeds large, oval, 4 or .5 in each cell. 



4. C. danica. Danish Scurvy-grass. 



Leaves all triangular and stalked. Pouch elliptical, reti- 

 culated with veins. 



C. danica. Linn. Sp. PL 903. Willd. v. 3. 449. Fl. Br. 689. Engl. 



Bot. V. 10. t. 696. Hook. Scot. 196. DeCand. Syst. v. 2. 366. 



Fl. Dan.t. 100. 

 C. marina, folio anguloso parvo. Rail S;/n. 303. 

 C. Aremorica. Barrel. Ic. t. 1305./. 1. 

 Thlaspi hederaceum. Loh.Ic.&\b.f. Ger. Em.27\.f. Bauh. Hist. 



V. 2. 933./. Dalech. Hist. 1420./. 

 Ivy Scurvy-grass. Petiv. H. Brit. t. 49./ 3. 



On the sea coast, in a muddy soil, but rare. 



IniWalney island, Lancashire; Mr. Lawson. Ray. Anglesea. 

 Mr. Lhwyd and the Rev. H. Davies. At Wells, Norfolk. Mr. 

 Crowe. On several parts of the south coast, from Portland 

 island to the Land's end. Mr. D. Turner and Mr. Sowerbij, 



Annual. May, June. 



Smaller than the last. Stems several, 3 or 4 inches long, spread- 

 ing, or prostrate, seldom divided, leafy throughout. Leaves all 

 on longer or shorter footstalks, uniform, thvee-lobed, entire j 

 heart-shaped at the base ; resembling Ivy, or Anemone Hepaiica, 

 in miniature. Fl. small, pure white. Pouches in rather lax, but 

 shortish, clusters, elliptical, most like those of C. anglica, though 

 smaller, and less strongly veined, with a shorter style. Seeds 

 6 in each cell. 



Certainly quite distinct from the last, and unchanged by cultiva- 

 tion, except becoming somewhat branched from luxuriance, but 

 the foliage never alters. I have not seen DeCandoUe's variety 

 /3, found by Dr. Hooker on the Giant's Causeway, whose radi- 

 cal Zeaties are described as kidney-shaped, those on the stem very 

 few, and all undivided. By the description it should seem rather 

 to belong to C. anglica, in a starved state. 



5. C. Armoracia. Horse-radish. 



Radical leaves oblong, crenate ; those of the stem lanceor. 

 late, either cut or entire. • 



VOL. III. N 



