THLASPI Limwsi Gen. PI. T e t r a d y n a m i a S i l i c u l o s a .
Silicula emarginata, obcordata, polyfperma : valvulis navicularibus, marginato-catinatis.
• Raii Syn. Gen. 2 1 . H e r b æ T e t r a p e t a l æ S i l iq u o sæ e t S iu c u l o s æ .
THLASPI campefire filiculis fubrotundis, foliis fagittatis dentatis, incanis. Linn. S p .P l.^ .cp z. Syfi.
Vegetab. p. 491. F l. Suce. n. 575.
NASTURTIUM foliis imis petiolatis ovatis, caulinis fagittatis dentatis. Haller Hifi. n. 509.
THLASPI campefire. Scopoli Flor. Carn. n. 807.
THLASPI arvenfe, Veçcariæ folio majus. Bauh. Pin. 106.
THLASPI mithridaticum five vulgatiflimum Vaccariæ folio. Parkinf. p. 835.
THLASPI vulgatius. J . Bauh. II. p. 921.
THLASPI vulgatiflimum. G er. M p. 262. Ran Syn. 305. Mithridate Muftard, Baftard Crefles.
Hudfon Fl. Angl. p. 281. Lightfoot F l. Scot. p. 341.
BIADIX annua, fimplex, fibrofa.
■ CAULIS pedalis ad fefquipedalem, ere&us, teres, fub-
:•! angulofus, villofus, fuperne tantum ramofus.
■ FOLIA radicalia longe petiolata, oblongo-ovata, ob-
tufa, faepius fubintegra, interdum vero bafi
pinnatinda, cito marcefcentia ; caulina fagit-
tata, fparfa, conferta, fubereâa, villofa, den-
tata, amplexicaulia.
■ FLORES minimi, albi.
■ RACEMI longi, erefti.
■ PEDUNCULI teretes, villoli, patentes, filiculis paulo
longiores.
■ CALYX: P e r i a n t h iu m tetrap hy llum , fo lio lis o v a tis ,
obtufis, co n ca v is, ad lentem fubp ilo fis , mar-
ginibus e t apicibus alb idis, altéra is p a u lo bre-
vioribus e t anguftio ribus, f i g . 1.
■ COROLLA: Petala quatuor, alba, calyce paulo
longiora, limbo fubrotundo, urigue gracily,
jig. 2.
■ STAMINA : F i l a m e n t a fe x , qu o rum d u o p au lo
b revio ra. A n t h e r æ flavæ,- fig . 3.
■ P1STILLUM : G e r m e n ovale, compreflum, emargi-
natum. S t y l u s breviflimus. S t i g m a capitatum',
Jig. 4.
BPERICARPIUM : S i l i c u l a o v a ta , ob tu fa, em a r g inata
difperma, in ferne g ib b a , fuperne co n ca v a ,
feminibus p ro tub e rantibus , jig . 5 , 6 .
^ ROOT annual, fimple, and fibrous.
| STA LK a foot, or a foot and a half high, upright,
0 round, very flightly angular, villous, branched
at top only.
| LEAVES next the root, Handing on long foot-ftalks,
$ o f an oblong ovate Ihape, for the mod part
1 nearly entire, but fometimes pinnatifid at the
bafe, foon decaying, thofe of the ftalk arrow-
fhaped, placed irregularly, numerous, nearly
| upright, villous, toothed, and embracing the
f ftalk.
| FLOWERS very fmall and white.
$ RACEMI long and upright.
| FLOWER-STALKS round, villous, and fpreading,
% a little longer than the feed-pods.
C A L YX : a Perianthium of four leaves; the leaflets
ovate, obtufe, hollow, flightly hairy when
f magnified, the edges and tips whitifh, the
alternate ones ftiorter and narrower than the
$ others, fig. 1.
| COROLLA compofed of four white Petals, a little
| longer than the calyx, the limb roundilh, and
$ claw very (lender, jig . 2.
| STAMINA: fix Filaments, of which two are Ihorter
$ than the reft, jig . 3.
f PISTILLUM : G ermen oval, flat, emarginate.
| Sty le very fhort. Stigma forming a little
0 head, jig . 4.
| SEED-VESSEL : an ovate Pod, obtufe, emarginate,
containing two feeds, underneath gibbous,
I The Thlafii arvenfi filiquis latis of C. B a u h in e , and the prefent fpecies, are the two whole feeds have been
[felefted from this numerous genus for medicinal ufe. Thefe appear to have been ufed indiscriminately; and
fometimes the feeds of the common Crefs ( Lefiidium jativum ) have been fubftituted for both. Their virtues
[appear to be pretty fimilar: R u t t y prefers thofe of the arvenfe, as being the moft active : they certainly have
[much more or the alliaceous tafte than thofe o f the campejlre. _ 1 • u tt • t’ i a
[ In the prefent praftice they are rarely made ufe of any otherwife than as ingredients m the Venice Treaclie and
[Mithridate, though fome recommend them in different diforders, preferably to the common Muftard, with which
[they agree nearly in their pharmaceutic properties. Lewis's Mat. Med. p. 647.. . ,
r The prefent fpecies is not an unufual inhabitant of corn-fields ; neverthelefs it is rather a Tcarce plant with us.
[ We have noticed it in the greateft plenty about Coomb-Wood, near Kingfton. Dr. G o o d e n o u g h informs me,
; Jt is not uncommon in Gunnerfbury-Lane, near Ealing.
I It flowers in June, and ripens its feeds in July and Au^uft.