1028 P LACTUCA. PCLASS XIX. ORDER 1. 
compressed, five ribbed on each side, and terminating in a beak, 
white, and as long as itself. 
Habitat—Waste ground near Denny Abbey, Cambridgeshire ; 
Southend, Sussex. 
Perennial ; flowering in August. 
8. L. salig'na, Linn. (Fig. 1203.) Least Lettuce. Leaves linear, 
entire, eared at the base, the radical ones lanceolate, scarcely toothed, 
the mid-rib keeled, and scarcely rough, with spines; panicle of 
straight racemose spicate branches, leafy ; fruit compressed, each side 
five ribbed, terminated with a long white slender beak. 
English Botany, t. 707.—English Flora, vol. iii. p 346.—Hooker, 
British Flora, ed. 4. vol. i. p. 290.—Lindley, Synopsis, p. 432. 
fioot tapering, the whole plant slender, wand-like. Stem erect, 
round, smooth, pale brown, or whitish, leafy, simple, or with slender 
straight branches. eaves smooth, glaucous, green, the mid-rib 
somewhat prickly, the lower leaves long, narrow, linear, with linear 
lobes, the upper ones entire, linear, two lobed at the base, sessile, and 
clasping the stem. Inflorescence sub-spicate racemes. lowers 
small, yellow. Slorets few, linear, obtuse. Involucre of numerous 
linear smooth glaucous scales, of unequal lengths, erect, close pressed. 
Bracteas small, leafy. Fruit ovate, acute, compressed on both sides, 
five ribbed, roughish, terminated in a long slender white awn, pappus 
slender, rough, silky hairs. 
Habitat.—Chaiky waste ground, and salt marshes in the South-east 
of England. 
Biennial ; flowering in August. 
4. ZL. mura'lis, Less. (Fig. 1204.) Ivy-leaved Lettuce. Leaves 
petiolated, lyrato-pinnatifid, the lobes ovate, angular, toothed, the 
terminal one large; panicle with spreading branches; florets five in 
each head. 
Hooker, British Flora, ed. 4. vol. i. p. 290.—Lindley, Synopsis, p. 
157.—Prenanthes muralis, Linn.—English Botany, t. 457.—English 
Flora, vol. iii. p. 348. 
Root long branched fibres, the whole plant smooth and shining, 
very brittle, and abounding in a milky juice. Stem erect, slender, 
from one to two feet high, round, hollow, leafy, simple, auriculated at 
the base, and clasping the stem, rarely branched. Leaves spreading, 
the lower ones on longish footstalks, lobed and toothed, the lateral 
lobes ovate, the terminal one large, triangular, lobed, and toothed, 
the upper ones mostly with only a terminal lobe, all pale glaucous 
green beneath, and more or less of a purple tint. Inflorescence a 
slender branched spreading panicle. Bracteas small, ovate lanceo- 
late. Flowers small, slender, erect. Jnvolucre purplish, the outer 
scales small, the inner long, linear, obtuse. lorets pale yellow, five 
ineach head. Fruit ovate, acute, compressed, striated, and rough, 
