150 ENGLISH BOTANY. 
In waste places. Rather rare, and more partial to the sea- 
coast than the preceding species, with which, in other respects, its 
distribution coincides. The pinnatifid-leaved form in the marshes 
about Plumstead Butts. 
England. Annual or biennial. Late Summer 
and Autumn. 
This plant bears much resemblance (especially in the larger 
pinnatifid-leaved forms) to L. Scariola ; it has, however, a greater 
tendency to produce numerous branches at the base of the main 
stem. The leaves, even when runcinate, have the segments further 
apart and narrower ; the auricles are more diverging ; the margins 
and midribs of the leaves and the stems smooth, rarely with a few 
bristles or prickles ; the panicle has extremely short branches, and 
the anthodes have shorter stalks ; the fruit is similar, but smooth 
(not scabrous) towards the top, and the margin is scarcely broader 
than the ribs upon the face. 
The form with pinnatifid leaves I have gathered at Plumstead 
Marshes, and have seen also from Whitstable in Kent. It is appa- 
rently the L. saligna runcinata (Gr. & Godr. El. de Er. Vol. II. 
p. 319), where it is suggested that it is possibly a hybrid between 
L. saligna and L. Scariola. It seems, however, to be merely a 
luxuriant form of the former. 
Least Lettuce. 
French, Laitue Effilee. German, Weiden-bllitteriger Lattich. 
SPECIES IV— LAC TUC A MURALIS. Fresen. 
Plate DCCCVIII. 
Billot, Fl. Gall, et Germ. Exsicc. No. 407. 
lieich. Ic. Fl. Germ, et Helv. Vol. XIX. Tab. MCCCCXVII. 
Prenanthes muralis, Linn. Sm. Eng. Bot. No. 457. 
Mycelis muralis, Reich. Fl. Excurs. p. 272. 
Phccnixopus muralis, Koch, Syn. Fl. Germ, et Helv. ed. i. p. 430. 
Cicerbita muralis, Wallr. Sched. Crit. p. 436. 
Stem smooth. Leaves lyrate-pinnatiful, sub-runcinatc, with 
ihc lobes angular, not spiny on the margins or midrib ; stem- 
leaves (except the lowest) amplexicaul, with acute or blunt 
auricles. Panicle very lax, corymbose at the top, with slender 
divaricate branches. Achencs purplish-black, scarcely bordered ; 
beak white, about one-fourth the length of the achene. 
On rocks, old walls, and shady places in woods. Rather rare. 
but pretty generally distributed in England. It has also been 
