IjO [ 1747 ]
SISYMBRIUM terrestre.
Annual Water Rocket.
TETRADYNAMIA Siliquosa.
Gen. Char. Pod cylindrical, bursting with nearly
straight valves. Cal. and Cor. spreading.
Spec. Char. Pods declining, turgid. Leaves pinna-
tifid, unequally toothed. Root simply fibrous.
Petals scarcely so long as the calyx.
Syn . Sisymbrium terrestre. Curt. Lond.fasc. 5 . t. 49.
Sm. FI. Brit. 701. With. 582. Hull. 150.
Relh. 257. Sibth. 207. Abbot. 143.
S. amphibium a. Huds. 296.
Raphanus aquaticus, foliis in profundas lacinias divisis.
Dill, in Raii Syn. 301.
G A T H E R E D in T o th ill fields last September. I t occurs in
several other parts o f E n g lan d , in wet places where the soil is
gra v elly.
R o o t annu al, tapering, sometimes soon div iding into several
bran che s, b u t not c re eping. Stem about a fo o t h ig h , nearly
erect, branched, le a fy , furrowed, sm oo th . Lea ve s alternate,
ly ra te , sm o o th , u nequ ally toothed or somewhat serrated.
F low e r s num erou s, small. Petals shorter than th e c a ly x ,
sometimes emarginate, y e llow . C a ly x -Reaves conca ve , obtuse,
tinged w ith red or b row n . N e c ta ry o f 4 large green glands
b e tw een the long er and shorter stamens. S tigm a capitate,
c lo v en . F ru it in v ery lo n g cylind rical clusters j the partial
stalks alternate, h o r izo n ta lly spreading, each bearing a sh or tish,
corrug ated , sw e llin g pod, w h ich g row s more up righ t as i t
rip ens, and is c row ned w ith a v ery short sty le. Seeds several.
LinnEeus appears n o t to have been acquainted with this
species. Hudson thought it a variety o f S. amphibium, which
has a perennial root, leaves sharply serrated or pinnatifid,
larger petals, smaller pods, and a longer style.
■ ■