TETRADYNAMIA— SILICULOSA. Cochleavia. 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 radicle ones 

 stalked and 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. irUld. v. 3. 418. Fl. Br. 688* 

 Engl.Bul.v.8.t.5^\. H'oodv. t.29. Houk. Scot.\9'). Lonch 

 t. 148. DeCand. Syst. v. 2. 364. Fl. Dan. t. 135. 



Cochlearia. Raii Sijn. 302. Bauh. Hist. v. 2. 942./. Corner. 

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



C. rotunditblia. Ger. Em. 401 ./. 



Garden Scuivy-arass. Petiv. H. Brit. t.49.f. 1. 



Nasturtium n. 503. Hall. Hist. v. 1.218. 



^. Cochlearia minor rotundifolia nostras. Raii Syn. 303. 



y. C. groenlandica. With. 573; but 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. Loicer leaves on long stalks, roundish-heart-shaped, 

 wavy; upper 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 /lowers are small and 

 white. Pouches but slightly veiny. 



2. C groenlandica, Greenland Scurvy-grass. 



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

 Pouch globose. 



