146 ENGLISH BOTANY. 
shire; but there is no recent authority for these latter places. It 
is said to have been particularly abundant on the ruins left by the 
Great Fire of London, but the only specimens I have seen are from 
Berwick-upon-T weed. 
England, Scotland, Ireland. Annual or Biennial. Summer. 
Stem erect, 1 to 2 feet high, branched. Leaves stalked, deeply 
pinnatifid or pinnatipartite with distant spreading or even reflexed 
lobes which are slightly toothed; terminal lobe a little larger than 
the rest, especié nye in the upper ‘leaves where it is usually hastate. 
Flowers about $ inch in diameter (considerably smaller than as 
represented in the Plate), pale ochreous yellow. Fruit pedicels 
ascending, + to $ inch long. Young pods much exceeding the 
flowers; mature pods 1} to 13 inch | long, smooth, very Slender! 
scarcely tapering, distinctly beaded ; valves with 3 distinct nerves; 
replum membranous, without a nerve. Plant dull green, glabrous, 
or slightly pubescent. 
The much longer and slenderer pods distinguish this from all 
the preceding species of the genus. 
London Rocket, or Broad-leaved Hedge Mustard. 
French, Sisymbre Trio. 
This name is derived from epvw (ervo), I cure. It is called London Rocket, from 
the fact of its having sprung up in great quantities on the ground which was laid waste 
by the Great Fire of London in 1666. 
Sus-Genus I].—ALLIARTIA. 
Seed-stalk (funiculus) dilated. 
SPECIES V—SISYMBRIUM ALLIARIA. Scop. 
Puate C.* 
Alliaria officinalis, Reich. Ic. Fl. Germ. et Helv. Vol. II. Zetr. Tab. LX. Fig, 4379. 
Alliaria officinalis, Andrz. in D.C. Bab. Man. Brit. Bot. ed. v. p. 27. Benth. Handbook 
Brit. Fl. p. 88. Hook. & Arn. Brit. Fl. ed. viii. p. 35. 
Erysimum Alliaria, Zinn. Sm. Eng. Bot. No. 796. 
Leaves rounded or deltoid, base deeply cordate, edges crenate 
or toothed. Pods shortly stalked, nearly straight, cylindrical but 
somewhat 4-angled, ascending-spreading, arranged in very lax 
leafless racemes terminating the stem and branches. 
In hedges and open places in woods. Common in England 
and the South of Scotland, but becoming rare in the North and 
* The Plate is E B. 796, unaltered. 
