PLATE LVII. 



TROP.EOLUM MrVJUS, 



GREATER NyVSTURTIUM. 



This genus liin)i^>lK's plants ol' the herbaceous, annual, and 

 perennial, iraihng and clin)l)ing kijuls. 



ll helon<Ts lo the class and order Odandria Monogyma, and ranks 

 in the natural order of Tri/iilata: 



The characters are: that the caljx is a one-leafed perianth, fivc- 

 cleft, from upright spreading, acute, coloured, deciduous; the two 

 lower segments narrower; horned al the back with an awl-siiaped, 

 straight," longer nectary: the corolla has five petals, roundisli, in- 

 serted into the divisions of the calyx; two upper sessile; the others 

 lower, with oblong ciliale claws: the stamina have eighl awl-shaped 

 filaments, short, declining, uneepud: anthers erect, oblong, rising: 

 the pislillum is a roundish germ, ihree-lobed, striated: style simple, 

 erect, length of the stamens: stigma tritkl, acute: the i)ericar|)iun» 

 berries (or nuts) somewhat solid, three, on one side convex, grooved 

 and striated; on the other angular: the seeds three, gibbous on one 

 side, angular on the otiier, roimdish, grooved and striated. 



The'specics cultivated arc: I. T. iiiiiius. Small Indian Cress, or 

 Kasturlium; 2. T. mnjtts. Great Indian Cress, or Nasturtium. 



The first has an herbaceous, trailing stem: the leaves alnu)sL 

 circular, smooth, grayish: the lloweis axillary, on very long pedun- 

 cles; composed of five acute-pointed petals, the two upper large and 

 rounded, the three under narrow, jointed together at bolloin, and 

 lengthened out into a tail two inches long. . .. • 



There are varieties with deep orange-coloured flowers inclining 

 to red, Avitli pale yellow flowers, and with double flowers. 



