TETRADYNAMIA— SILIQUOSA. Nasturtium. 191 



About London in several places. Huds. and Curtis. Between Kew 

 and Mortlake. Bishop of Carlisle. Near Rippon. Mr.W.Brun- 

 ton. In King-street meadows, Norwich. 



Perennial. April, May. 



Root toothed, somewhat creeping. Stems 1 to 2 feet high, leafy, 

 a little zigzag, more or less hairy, their lower part creeping, 

 with several radicles, and sometimes a few slender scions. Leaf- 

 lets all dilated ; those of the upper leaves oblong or elliptical, 

 deeply and unequally wavy or notched ; those of the radical 

 ones more rounded, obtuse and entire. Fl. the size of the last, 

 but always white or cream-coloured, with violet anthers. Mr. 

 Curtis first pointed out the essential mark of this species, in the 

 slender, obliquely elongated, style, and minute stigma, which 

 seem to be deciduous, still leaving the pod with a sharp straight 

 point. 



C. hirsuta of Fl. Dan. t. 148, which Is any thing rather than real 

 hirsuta, is suspected by DeCandolIe to be a variety of amara, 

 and so it seems to me. 



C. amara, before it flowers, greatly resembles Water Cresses, but 

 the taste is bitter and nauseous. Nasturtium aquaticum of the 

 Hortus Eystettensis, with its double variety, evidently belongs not 

 to this, but to C. pratensis. 



333. NASTURTIUM. . Cress. 



Br. inAit.H.Kew.v. 4. 109. DeCand. Syst.v.2.]87. Comp.ed.4. 



108. 

 Radicula. Dill. Gen. 121. f. 6. 



Cal. equal at the base ; leaves ovate-oblong, obtuse, spread- 

 ing, somewhat coloured, deciduous. Pet. obovate, spread- 

 ing, undivided, tapering into short claws ; occasionally 

 wanting. Filam. awl-shaped, simple ; the 2 shortest each 

 with a gland at the base withinside. Anth. incumbent, 

 somewhat heart-shaped. Germ, cylindrical. Style erect, 

 short, cylindrical. Stigma obtuse, notched. Pod nearly 

 cylindrical, rather turgid, shortish ; valves concave, with- 

 out ribs or keel. Seeds roundish, flattened, without a 

 border, irregularly disposed, on slender stalks ; cotyle- 

 ' dons accumbent. 



Branching herbs, almost invariably smooth, throwing out 

 numerous radicles, and either altogether aquatic, or at 

 least growing in wet ground. Stem roundish, with slight 

 irregular angles. Leaves pinnate, or pinnatifid. Fl. co- 

 rymbose, numerous, white or yellow. Pods ascending, 

 on the long, horizontal, partial stalks of numerous long 

 clusters. 



Mr. Brown has happily separated this genus from Sisym- 



