TETRADYNAMIA-SILICULOSA. Cochlearia. 175 



tical, turgid, rugged, veiny, tipped with the style, of 2 

 cells ; valves concave, rather thick, not bordered, scarcely 

 keeled; partition orbicular or elliptical, membranous, 

 generally as wide as the valves. Seeds several in each 

 cell, roundish ; cotyledons flat, accumbent. 

 Annual or perennial herbs, celebrated as antiscorbutic, 

 mostly smooth, and rather succulent, with branched 

 spreading stems; and simple leaves, the radical ones 

 stalked «nd most entire. Fl. white, or pale purplish, 

 never yellow. 



1. C. officinalis. Common Scurvy-grass. 



Radical leaves roundish ; those on the stem oblong and 

 ^ somewhat sinuated. Pouch globose. 



C. officinalis^ "^Linn. Sp. PL 903. Willd. v. 3. 448. Fl. Br. 688. 



En^,BQL.v^.Jj5 1 . Woodv.t. 29. Hook. Scot. 195. Land. 



t. 1 48. DeCan&rSyst. v. 2. 364. R. Dan. t. 135. 

 Cfthlearia. Rail Syn. 302. Bauh. Hist. v. 2. 942. /. Camer. 



Epit. 271 ./. Dod. Pempt. 594. f. 

 C. rotundifolia. Ger. Ein. 401. f. 

 GflBn Scurvy-grass. Petiv. H. Brit. t. 49. f. 1. 

 Njturtiur* ft..503. Hall. Hisi.v.\.2\S. 



chlearia minor rotundifolia nostras. Raii Syn. 303. 

 groenlandica With. 573 ; hut not of LinncEUS. 

 C. rotundifolia. Dill, in Raii Syn. 302. 



On the sea coast, in stony or muddy situations, abundantly ; some- 

 times, especially the varieties, in watery spots on the Welsh or 

 Scottish mountains. 



Annual. May. 



A smooth, sleek and shining herb, varying much in luxuriance, 

 and somewhat in the shape of its foliage. Stem angular, much 

 branched, usually a foot high ; in mountain specimens only 2 or 

 3 inches. Lower leaves on long stalks, roundish-heart-shaped, 

 wavy ; vpper sessile, smaller and more oblong, sinuated, or 

 deeply toothed, clasping the stem. Fl. pure white, in nume- 

 rous corymbose tufts. Pouches nearly globular, obscurely veiny, 

 tipped with the short style; partition broadly ovate. 



/S, sent by the late Rev. H. Davies from Beaumaris, has long 

 stalks to many of the stem-leaves, which are also more heart- 

 shaped than in the common kind. The flowers are small and 

 white. Pouches but slightly veiny. 



2. C. groenlajidica. Greenland Scurvy-grass. 



Leaves kidney-shaped, fleshy, entire ; uppermost oblong. 

 Pouch globose. 



