Sisymbrium sylvestre. Creeping Water-Rocket, 
SIS’VMBRIUM Gen, Plant. TeteadynamiA Siliciuosa,- 
SUiqua dehifans valvulis refliufculis. Cal. patens. Car. patens. 
Pali. Syn. Gen. 21. Heebje Teteapetaeas StLlctuos* et Siliculos.e, 
SISYMBRIUM fylveftre filiquis declinatis oblongo-ovatis, foliolis lanceolatis ferratis. Lin. Syjl. 
vegeiab. p. 497. 
SISYMBRIUM foliis pinnatis, pinnis dentatis diffitis Haller. Hiji. n. 485. 
SISYMBRIUM Roripa } Scopoli FI. CarnioL p. 823. 
SISYMBRIUM paluftre repens Nafturtii folio. I’ournefort piant aiitour de Paris p. 37. 
ERUCA fylveftris minor luteo' parvoque fiore Bauhin pin. 98. 
ERUCA quibufdam fylveftris repens, flofculo luteo Bauh. Hijl. 2 p. 866. 
ERUCA aquatica Ger. emac. 248. Park. 1242. Rail. Syn. 297. Water-Rocket. Rail. Jiiji. p. 808, 
Hudfon, FI. Angi. ed. 2. p. 296. 
Lightfoot FI. Scot p. 351. 
radix perennis, albida, tenuis, Infigniter repens, 
plurimis germinibus tuberculofa. 
CAULES plurimi, pedales, fuberefH, debiles, inter- 
dum purpurafcentes, glabri, angulato-ftriati, 
ramofi, ramis birfutulis. 
FOLIA radicalia pinnatifida, pinnis fubovatis, denta- 
to-ferratis, l^via, petiolo purpurafcente, cau- 
lina alterna, fubpinnatifida, pinnis lanceo- 
latis, ferratis, integrifve. 
PETIOLUS fuperne canaliculatus. 
FLORES parvi, lutei. 
PEDUNCULUS communis multiflorus, flexuofus, 
Pedunculi proprii alterni, patentes, aut furfum 
paululum curvati, filiquS plerumque longi- 
ores. 
CALYX : Periantium tretraphyllum, foliolis ovatis, 
concavis, eredis, aequalibus, flavefcentibus, 
fis- I- 
COROLLA : Petala quatuor, unguiculata, obtufa, 
patentia, calyce paulo longiora, Jig. 2. 
NECTARIUM: Glandulze quatuor, faturate virides, 
in circulum coadunatae. 
STAMINA; Filament lex, quorum duo breviora, 
fubulata, flava; Anthers incumbentes, 
fis- 3' 
PISTILLUAI: Germen oblongum, teres, longitudine ^ 
flaminum,/^. 5, Stylus breviffimus; Stig- ; 
MA capitatum, villofum. Jlg. 4. ; 
PERICARPIUM: Siliqua brevis, vix femuncialls, ■ 
teres, furfum curvata, plerumque abortiva, • 
fis- 6 . ^ 
ROOT perennial, _ whitifli, flender, remarkably cree- 
ping, thickly befet with germs which give 
it a knobbed appearance. 
STALKS numerous, a foot high, nearly upright, 
weak, lometimes purplilh, fmooth, fomewhat 
angular and finely grooved, branched, the 
branches very flightly hairy. 
LEAVES next the root pionatifid, the pinnje or Irnali 
leaves fomewhat oval, toothed or fawed, and 
fmooth, the leaf flalk purplilh, leaves on the 
ftalk alternate, ferrated or entire. 
FL 0 \VER-STALK hollowed above. 
FLOWERS fmall and yellow. 
FLOWER-STALK ; the general flower-flalk bent In 
and out and fupporting many flowers, the 
partial ones alternate, fpreadlng almoft ho- 
rizontally, orbent a little upwards, generally 
longer than the pod. 
CALYX: a Perianthium of four leaves, which are 
oval, hollow, upright, equal and yellowilh. 
fiS- I* 
COROLLA; four Petals each having a daw, and 
blunt at the point, fpreading and a little 
longer than the calyx, pd. z. 
NECTARY: four glands, of a deep green colour- 
united in a circle. 
STAMINA : fix filaments, two of which are Ihorter 
than the others, tapering, and yellow, An- 
thera: laying acrofs the Filaments, pg. 3. 
PISTILLUM : Germen oblong, round, the length 
of the ftamina pg. 3, Style very fliort ; 
Stigma forming a little head and villous. 
A- 4- 
SEED-VESSEL a Ihort Pod, fcarce half an inch 
long, round, bending upwards, g;enerally 
abortive, 6 . ^ > a j 
i OUR^EFORT in liis eles P/mtes dee environe ite Parie, has defcribed our plant with much acciiracv 
It appears from his acconnt to be plent, fnll not only along the banks, of the Seine, but in the the courts befoS 
Houfes, and in moll mo.ft f.tnations, ,t ,s a fo defcribed by Ray, in his HlJl. Piant ■, with us it is not of S 
m which It does occur we find it in great abundance ; the watery part of 
•TotbiU Fyde rnjlmmjter over run with it ; I foarcely know any plant that requires to be introduced into a Gar- 
den with more caution than this, efpecially if the ground be moifl. 
It continues to flower from June to September. Both Ray and Todknefort mention the feeds of this plant 
It is probable they found it growing m a dry lituation favourable to their ripening, the feed vefleils which I have 
Kad an opportunity of leeing have all proved abortive, which I fufped is natural to the plant as it encreaS 
confiderably by its root. ^ cutii.aic» xu 
This plant affords no llriking generic charaaer, but may be referred to almoft any Genus in the Order. 
