1030 SGNCHUS. [CLASS XIX, ORDER I. 
2. S. palus'tris, Linn. (Fig. 1206.) Tall Marsh Sow-thistle. Stem 
above corymbose, and with the involucre clothed with glandular 
hairs ; leaves runcinato-pinnatifid and toothed, all the segments 
lanceolate, acuminate, the base arrow-shaped, upper leaves entire ; 
fruit striated, and rough. 
English Botany, t. 935.—English Flora, vol. iii. p. 341.—Hooker, 
British Flora, ed. 4. vol. i. p. 292.—Lindley, Synopsis, p. 156. 
Root fleshy, with long spreading branches. Stem erect, hollow, 
angular, and somewhat furrowed, leafy, from six to eight feet high, 
simple below, branched above. Leaves large, smooth, veiny, the 
margin copiously fringed with bristly teeth, runcinato-pinnatifid, the 
lobes all narrow, lanceolate, acuminate, mostly pointed downwards, 
all arrow-shaped at the base, the upper ones lanceolate, arrow-shaped. 
Inflorescence mostly of numerous flowers, in a terminal sub-corymbose 
panicle, the peduncles and involucre more or less profusely clothed 
with glandular tipped hairs. Jnvolucre erect, the outer scales short, 
the inner long, linear lanceolate. Florets linear, obtuse, finely 
toothed at the apex. /ruit oblong, striated, the stria transversely 
rugulose. 
Habitat.—Marshy places; rare. Isle of Ely, Greenwich, and 
Blackwall; Croydon, Wouldham, Kent. 
Perennial ; flowering in July and August. 
The Marsh Sow-thistle is the largest of our species, and, indeed, is 
one of our largest herbaceous plants. It is found more frequent on 
the Continent than with us, but does not appear to have been applied 
to any useful purpose. The S. tenerrismus is a common plant on 
ruins and old walls in Italy, and in some parts of the country is used 
as a spring salad. 
3. S. arven'sis, Linn. (Fig. 1207.) Corn Sow-thistle. Stem above 
corymbose, and with the involucre clothed with glandular hairs; 
leaves lanceolate, runcinate, cordate at the base, the upper ones 
entire ; fruit striated, and rough. 
English Botany, t. 674.—English Flora, vol. iii. p. 342.—Hooker, 
British Flora, ed. 4. vol. i. p. 292.—Lindley, Synopsis, p. 156. 
Root fleshy, creeping. Stem erect, from three to four feet high, 
leafy, round, hollow, but little branched, smooth below, rough at the 
top, with black glandular hairs. Leaves lanceolate, runcinate, finely 
toothed, smooth, shining, green above, pale and glaucous beneath, 
the lower leaves tapering into long footstalks, the upper heart-shaped 
at the base, and clasping the stem, the uppermost ones lanceolate, 
entire. Inflorescence cymose, of numerous large spreading flowers, 
the peduncles slender, mostly very hairy. Bracteas linear, lanceolate, 
smooth. JInvoluere with the outer scales small, spreading, the inner 
linear, with a membranous margin, nearly smooth. orets bright 
yellow, linear, obtuse, finely toothed at the end. Fruit ovate, com- 
