CLASS XV. ORDER u.J NASTUUTIUM. 927 



bourhood of London. It has long been esteemed for its antiscorbutic 

 properties, and its pleasant pungent bitter renders it very agreeable to 

 many persons. 



2. N. sylves'tre, Br. (Fig. 1072.) Creeping Nasturtium. Siliqua 

 linear, as long as the pedicle ; leaves pinnate, the lower ones with 

 lanceolate cut lobes, the upper with linear entire ones ; root with 

 creeping stems. 



English Flora, vol. iii. p. 193. — Hooker, British Flora, ed. 4. vol. i. 

 p. 253. — Lindley, Synopsis, p. 23. — Sisymbrium syhestre, Linn. — 

 English Botany, t. 2324. 



Root with long creeping underground stems. Stems erect, about a 

 foot high, angular, branched, waved, leafy, roughish, often purplish at 

 the base. Leaves numerous, pinnate, smooih, the lower ones with 

 lanceolate lobes, deeply cut or toothed, the upper leaves with linear 

 lanceolate entire lobes, or slightly toothed. Injloresccnce terminal and 

 lateral, sub-corymbose racemes, much elongated after flowering. 

 Calyx spreading, of four oblong smooth piece?, pale, yellowish. 

 Petals four, obovate, golden yellow, half as long again as the calyx. 

 Fruit linear spreading siliquas, about as long as the pedicles, seldom 

 perfected. Style short, crowned by the obtuse emarginate stigma. 



Habitat. — The margins of rivers and ditches, and wet gravelly 

 meadows ; but not very common. 



Perennial ; flowering in July and August. 



This is readily distinguished by its creeping perennial roots and 

 pinnate leaves, with narrow leaflets, especially the upper and entire 

 ones. 



3. N. terres'tre, Br. (Fig. 1973.) Marsh Nasturtium. Siliqua 

 oblong, linear, about as long as the pedicle; leaves lyrato-pinnatifid, 

 smooih, with unequally toothed lobes ; petals not longer than the 

 calyx ; root fibrous, simple. 



English Flora, vol. iii. p. 193. — Hooker, British Flora, ed. 4. vol, 

 i. p. 253. — Lindley, Synopsis, p. 23. —iV. anceps, Reicheubach. — 

 JV. paluslris, De Cand. — Sisymbriiim amphibium, var. terresire, 

 Linn. — S. terrestre. — English Botany, t. 1747. 



Boot simply fibrous, tapering. Stem erect, or ascending, from one 

 to two feet high, smooth, angular, furrowed, branched and leafy. 

 Leaves smooth, the lower ones lyrato-pinnatifid, with ovate toothed or 

 cut segments, the terminal lobe large, ovate, toothed or waved, the 

 upper leaves often simply pinnate, with equal ovate lanceolate lobes. 

 Inflorescence terminal and lateral sub-corymbose clusters, becoming 

 elongated racemes. Calyx of four oblong spreading smooth seg- 

 ments, yellow. Petals obovate, not longer than the calyx. Fruit a 

 spreading smooth turgid siliqua, linear, oblong, curved upwards on a 

 slender pedicle, about half as long as the pod, or longer. StTjle very 



