TETRADYNAMIA. 
■791 
Cardam'ine ama'ra. ( C. amara.') Leaves winged: radical leaflets 
roundish : those of the stem tooth-angular: style oblique: sum-* 
mit tapering to a point: stem radicating at the base. 
--..- praten'sis. ( C.pratensis .) Leaves winged: radical leaf¬ 
lets roundish; those of the stem spear-shaped: style straight: 
summit capitate. 
■-—--- impa'tiens. (C. impatiens.) Leaves winged: leaflets 
spear-shaped, somewhat snipt: stipules fringed: petals strap¬ 
shaped, or none. 
«-hirsu'ta. (C. hirsuta.) All the leaves winged, without 
stipulse: leaflets having leaf-stalks : the radical ones roundish : 
stamens four to six, as long as the petals : summit nearly sessile. 
A^rabis stric'ta. (A. stricta.) Leaves toothed, blunt, rough with 
bristly hairs; those of the root approaching to lyre-shaped : 
stems hirsute: petals erect. 
—- his'pida. (A. hispida.) Root-leaves indented, lyre-shaped, 
lengthened into foot-stalks; those of the stem mostly undivided, 
smooth: fruit-bearing peduncles spreading half the length of the 
pods. 
-- thalia'na. ( A. thaliana .) Leaves toothed, hairy; those of 
the root oblong: stamens nearly as long as the petals: pods 
ascending. 
-- cilia'ta. (Turritis alpina.) Leaves slightly toothed, oval, 
smooth, fringed: those of the root nearly sessile, blunt: stem- 
leaves half embracing the stem, which is undivided. 
*—- pursuit A. ( T. hirsuta.’) All the leaves rough with bristly hairs, 
toothed: stem-leaves half embracing the stem: pods straight. 
.- turri'ta. ( A . turrita.) Leaves embracing the stem, acumi¬ 
nate : pods pendant, two-edged: hractece leafy. 
Turri'tis glabra. (T. glabra.) Root-leaves toothed, hairy: stem- 
leaves embracing the stem, entire, smooth. 
Barba'rea vulga'ris. ( Erysimum harharea.) Lower-leaves lyre- 
shaped, red; the terminating lobe rounded: upper-leaves inversely- 
egg-shaped, toothed. 
-prze'cox. (E. prcecox.) Lower-leaves lyre-shaped: upper- 
leaves wing-cleft: segments strap-oblong, entire. 
Nasturtium officina'le. (Sisymbrium Nasturtium.) Leaves winged: 
leaflets egg-shaped, somewhat heart-shaped, waved. 
*--sylves'tre. (S. sylvestre.) Leaves winged: leaflets 
spear-shaped, serrated or snipt. 
---——— ter'restre. (S. palustre, v. terrestre.) Leaves wing- 
cleft, toothed, smooth: root spindle-shaped: petals not exceeding 
the calyx. 
— ■ " ■ - amphib'ium. (S. amphibium.) Leaves oblong-spear¬ 
shaped, wing-cleft or serrated : petals longer than the calyx : 
root fibrous. 
