792 
TETRA DYNAMI A. 
Sisym'brium officinale. ( Erysimum officinale.) Pods awl-shaped, 
pubescent, pressed to the stalk: leaves notched, hairy: stem 
hispid. 
. .. . I'mo. {S. Irio .) Leaves notched, toothed, and, as is the 
stem, smooth: pod expanding upwards. 
- - —-- So'piiiA. {S. Sophia .) Leaves doubly winged: leaflets 
strap-shaped, the terminal one longest: petals shorter than the 
calyx. 
Erys'imum cheihanthoides. {E. cheiranthoides.) Leaves spear- 
shaped, entire, or slightly toothed: hairs triply stellate: pods 
nearly upright: fruit-stalks expanding: summit undivided, nearly 
sessile. 
-- allia'ria. {E. alliaria.) Leaves heart-shaped, on leaf¬ 
stalks, sharply toothed. 
. —- orienta'le. {Brassic a orientalist) Leaves heart-shaped, 
embracing the stem, smooth : root-leaves scabrous, entire. 
Ciieiran'thus chei'ri. (C. cheiri.) Leaves spear-shaped, entire: 
pubescence adpressed: pod strap-shaped: lobes of the summit 
recurved. 
Mathi'ola inca'na. (Cheiranthus incanus.) Leaves spear-shaped, 
entire; pods cylindrical, without glands. 
..— ■ sinua'ta. {C. sinuatus.) Leaves cottony; the lower ones 
indented; pods compressed, prickly. 
Hes'peris matrona'lis. (H. matronalis.) Borders of the petals 
inversely egg-shaped: pods upright, protuberating, with a simple 
margin. 
Bras'sica napus. {B. napus.) Root caulescent, spindle-shaped: leaves 
smooth; the upper ones heart-spear-shaped, embracing the stem; 
lower ones lyre-shaped, toothed. 
--ra'pa. (B. rapa.) Root caulescent, orbicular, flatted, fleshy : 
root-leaves lyre-shaped, scabrous: those of the stem entire, 
smooth. 
■ - • olera'cea. (B. oleracea.) Root caulescent, cylindrical, fleshy: 
all the leaves smooth, glaucous, waved, and lobed. 
————— monen'sis. {Sisymbrium monense.) Leaves wing-cleft: stem 
nearly leafless, glabrous: pods smooth: beak one-seeded. 
*—- campes'tris. {B. campestris.) Root and stem slender: 
leaves heart-shaped, embracing the stem; lower ones lyre-shaped, 
toothed, rather hispid. 
SiNa'pis arven'sis. (aS', arvensis.) Pods with many angles, turgid, 
and protuberating, longer than the two-edged beak. 
r—— — ai/ba. {S. alba.) Pods hispid; beak slanting, very long, 
sword-shaped. 
