TETRADYNAMIA. SILIQUOSA. Sinapis. 78? 
(S. tenuifo'lia. Leaves lanceolate, smooth; the lowermost once or 
twice pinnatifid; uppermost undivided: pods erect, strap-shaped, 
smooth, with short beaks : stem smooth. E.) 
E. Bot. 525 — Curt. — Pet. 468. E.) 
Stem one foot and a half high, upright, cylindrical, woody at the base. 
Leaves with winged-clefts and jagged, smooth, expanding, of a disagree¬ 
able scent. Calyx , two of the leaves almost upright; two gibbous at the 
ends, bent back; before the blossom is expanded appearing as if tipped 
with two horns from the projecting points of two of the leaves, which 
. are beset with one or two hairs. Petals of the larger size twice as large 
as the calyx, yellow, with claws. Style very short. Pods one and a half 
inch long, cylindrical, marked with a prominent line on each side. Seeds 
egg-shaped, slightly compressed. Curt. ( Root spindle-shaped, whitish, 
rather woody. Stem very much branched : herb glaucous. Seeds in two 
rows,* not always complete. E.) 
(Narrow-leaved Wall Mustard. Wild Rocket. Ray. Wall 
Rocket. Pet. S.tenuifolia. Br. Hook. Sm. Sisymbrium temiifolium. 
Linn. Willd. FI. Brit. With. Ed. 6. Brassica muralis. Huds. With. Ed. 
iii. Curt. Diplotaxis tenuifolia. De Cand. Grev. E.) Old walls 
and rubbish. Walls of Yarmouth. Mr. Woodward. Chester, Taunton 
Castle, Lichfield Close, Berwick, &c. Ray; and about London, Bristol, 
and Exeter. Hudson. London Bridge. Mr. Jones. Near Sunderland, 
and about Tynemouth castle, abundantly. Mr. Robson. (Carlisle castle 
and drawdykes; erroneously reported in Hutchinson as Brassica mura~ 
Us. Mr. Winch. Ludlow castle. Rev. T. Rufford, in Purt. Dover cliffs. 
Mr. G. E. Smith. Coast of Fife, between Burntisland and Queensferry. 
Dr. Greville. Hook. Scot. E.) July—Oct.f 
(S. mura'lis. Pods ascending, slightly beaked: leaves spear-shaped, 
sinuated, deeply serrated: stems spreading, roughish. 
B. Bot. 1090— Barr. Ic. 131— H. Ox. iii. 5. 9. 
when prompt relief of that kind may be requisite: E.) in smaller doses, it is an useful aperient 
and diuretic. Cataplasms, formed with crumb of bread, vinegar, and powdered mustard 
seed, (hence called sinapisms), are very commonly applied to the soles of the feet, as 
stimulants, in fevers that require such treatment; they are used with advantage, topically- 
applied, in fixed rheumatic and sciatic pains. Upon the whole, wherever we want a 
strong stimulus, that acts upon the nervous system, without exciting much heat, we know 
none preferable to mustard seed. (The plant is cultivated largely in Essex, and the seed 
sold to the manufacturers of flower of Mustard. It is prepared by drying the seeds on 
a kiln, and grinding them into powder. Mr. Salisbury states that in the Isle of Ely, 
wherever new ditches are thrown out, or the earth dug to any unusual depth, a crop of 
Black Mustard immediately appears; the seeds in some, instances having remained under 
ground for ages. See Osmunda regalis. With. vol. iii. E.) Its acrimony consists in an 
essential oil .~-Phalcena fidiginosa lives upon the different species : (and the caterpillar of 
Pontia Daplidice devours the seeds. Vid. Curt. Brit. Ent. vol. i. pi. 48.— Multvm ardet in 
Latin, or Moult arde in old French, (“ it b.urns much,”) might have been imagined tlie.real 
themu of the word Mustard, had not a whimsical history attached to its etymology. Ins 
13S2 Philip the Bold, Duke of Burgundy, granted to the town of Dijon armorial ensigns 
with the motto “ Moult me tarde, f> (“ I long, or wish ardently; ”) which, being sculptured 
over the principal gate, by some accident the middle word became effaced. The merchant 
dealers in Seneve, (Sinapi ), intending to ensign their pots with labels of the city arms, 
copied the imperfect motto as it then remained, “ Moult-tardc” and hence the name which 
the Sinapi composition has preserved to this day. E.) 
* (Whence Prof. De Candolle deduces his genus Diplotaxis. E.) 
f All the parts of this plant are considerably acrid, and have a rank disagreeable smell* 
