192 TETRADYNAMIA— SILIQUOSA. Nasturtium. 



hrium, with which its various species have long beeti 

 thought, by the most experienced botanists, to disagree, 

 as much as they agree among themselves. The accum- 

 bent cotyledons decide the question ; and the short, thick, 

 turgid liods afford a ready and obvious character. 

 The name is Latin, and, according to Pliny, belonged to 

 some stimulating plant, pungent to the nostrils. The 

 only objection to its present adaptation is, that it has been 

 applied so variously by botanists to many other herbs ; 

 but it well suits our first, or best-known, species. 



1. N. officinale. Common Water Cress. 



Leaves pinnate; leaflets roundish-heart-shaped, wavy. 



N. officinale. Br.m A'lL H. Keu\ v. A.W^. DeCand. Syst. v. 2. 

 1 88. Comp. ed. 4.112. Hook. Scot. 20 1 . 



Nasturtium, Dorsten. Botan. 197, 2./. 



N. aqualicum. Trag. Hist. 82./. Dod. Pempt. 592./. 



N. aquaticura supinum. Bauh. Pin. 104. Moris, v. 2. 223. sect. 3. 

 t.4.f.8. 



N. aquaticum, sive Cratevse Sium. Ger. Evt. 257. f. 



Sisymbrium Nasturtium. Linn. Sp. PI. 916. Willd. v. 3. 489. Fl. 

 Br. 700. Engl. Bat. v. 12. t. 855. Curt. Lond.fasc. 6. t. 44. 

 Woodv. t. 48. FL Dan. t. 690. Bull. Fr. t. 302. 



S. n. 482. Hall. Hist. v. 1 . 209. 



S. Cardamine. Fuchs. Hist. 723./. 7c. 419./. 



S. Cardamine, seu Nasturtium aquaticum. Raii Si/n. 300. Bauh. 

 Hist. V. 2. 884./. 



S. aquaticum. Matth. I'algr. v. 1. 442./. Camer. Epit. 269./. 



Water Cress. Petiv. H. Brit. t. 47./. 2. 



(5. Nasturtium aquaticum, foliis minoribus, praecocius. Raii Syn. 

 301. ed. 2. 172. 



Early Water Cress. Petiv. H. Brit. t. 47./ 3. 



y. Nasturtium aquaticum, pinnulis paucioribus. Dill, in Raii Syn. 

 301. 



In clear springs, rivulets and ponds, very common and abundant. 



Perennial. June, July. 



Roots of many crowded, long, simple, white fibres. Stems spread- 

 ing, for the most part floating, leafy, branched, round with se- 

 veral angles, mostly smooth, but occasionally, when out of the 

 water, a little downy or hairy ; they vary considerably in length. 

 heaves smooth, deep shining green, pinnate, or somewhat ly- 

 rate, the terminal leaflet being largest ; all wavy rather than 

 toothed. Siipulas none. Fl. white, or slightly purple, with a 

 purplish calyx. Pods barely an inch long, tumid and undulated 

 at the sides, smooth, curved upwards, each on a horizontal stalk, 

 variable in length. The two varieties are of no moment. 



