§ ? (an gun. ?) Silique nearly terete, somewhat torulose; valves very
abrupt or truncate at the sum mit: style thick •' stigma capitate :■ seeds
margined : sepals shorter than the claws o f the (violet-purple) petals ;
the inner ones slightly gibbous at the base.—Iodanthus.
3. C. hesperidoides: glabrous; lower leaves lyrate-pinnatifid ; tipper ones
ovatedanceolate, attenuate at the base, unequally and sharply serrate-toothed ;
pedicels as long as the calyx ; limb o f ‘the petals roundish-ohovate.—Hespe-
ris pinnatifida, Michx.! JL 2. p. 31; Nutt. gen. 2. p. 69; DC. prodr. 1.
p. 190.
0. limb of the petals spatulate.
Banks' of rivers, western part of Pennsylvania to Kentucky (Dr. Short /)
and Illinois, Mr. Buckley ! /?. Arkansas, Dr. Pitcher! May-July—If. Stem
1-3 feet high, angular and striate, simple or branched. Leaves 2-4 inches
long, thin and membranaceous; lower ones usually pinnatifid toward the
base, with winged petioles; middle ones sagittate-auricled at the base.—•
Flowers racemose, the racemes often panicled: pedicels spreading. Sepals
ovate-oblong, obtuse, tinged with purple., Siliques about an inch and a
half long, narrowly linear, curved upward. Style terete, aline or more in
length, in fruit thicker than the depressed-capitate stigma. Seeds roundish-
oblong, with a narrow border. Cotyledons o =
2. NASTURTIUM. R .B r .in h o r t. Kew. ,(ed. 2.) 4. p. 109; DC. syst.
2. p. 187.
Silique nearly terete, sometimes shortened so as to resemble a silicle, usually
curved upward. Stigma somewhat 2-Iobed. Sepals spreading, equal at
the base. Seeds small, irregularly disposed in a double series, not margined.
—Aquatic or subaquatic herbs. Leaves often pinnately divided. Flowers
yellow or white.
§ 1. Petals white: siliques linear: 4 conspicuous glands at the base o f
the stamens.—Cardaminum, DC.
1. N. officinale (R. Brown): leaves pinnately divided; segments ovate,
subcordate, repand ; petals white, longer than the. calyx.—DC. prodr. 1. p.
137; Hook. fl. Bor.-Am. 1. p. 39. Sisymbrium Nasturtium, L in n .; Pursh,
fl. 2. p. 440 7; Nutt. gen. 2. p. 67.
Along the Wahlamet River, and in ponds, Oregon,- Nutt all; North West
Coast, Scouler ; Southern States, “ introduced,” Elliott. New England to
Virginia, Pursh.—Certainly introduced and scarcely naturalized in the
United States.
§ 2. Petals - yellow (rarely white) : siliques commonly short: glands
at the base o f the stamens small.—Brachylobos, DC.
2. N. tanacetifolium (Hook. & Am.): leaves pinnately divided; segments
sinuate-pinnatifid or toothed; siliques oblong-linear, nearly erect,
acute ; style short.—Hook. <$■ A m .! in jour. hot. 1. p. 190. N, palustre S
tanacetifolium, DC. prodr. 1. p, 137. Sisymbrium tanacetifolium, Wait-
Car. p. 174. S . . Walteri, Ell. sk. 2. p. 146.
Damp soils, South Carolina, East Florida! Louisiana! and Arkansas!
March-May.-—@ Stem much branched and somewhat decumbent or diffuse,
6-12 inches long. Leaves smooth, the ultimate segments obtuse. Flowers
very small. Petals linear, scarcely as long as the calyx. Silique 6-8 lines
long, straight or a little incurved, pointed with a short but distinct style:
stigma capitate. Pedicels about one-third as long as the silique. Seeds very
numerous.
3; N. lyratum (Nutt.! mss.) : “ leaves pinnatifid or lyrate ; the segments
oblong-lanceolate, incisely serrate or angularly toothed; silique linear, compressed,
more than twice the length of the pedicel, somewhat spreading,
abrupt at the apex ; style very short; common peduncle flexuous.”
“ Banks of the Oregon,” Nuttall /—Scarcely a foot high, glabrous. Leaves
somewhat variable in the toothing and serratures. Racemes paniculate
in fruit. Flowers minute. Siliques about three-fourths of an inch long,
slightly curved; the valves obtuse at the summit. Style scarcely half a line
long, not clavate. Pedicels 1-2 lines in length.
4. N. sessiliflorum (Nutt. ! mss.) : “ leaves cuneate-obovate, obtuse, re-
pandly toothed or nearly entire; siliques subsessile, linear-oblong, obtuse,
tipped with the nearly sessile stigma/’
“ Banks of the Mississippi,” Nutta ll; Kentucky? Rafnesque /—Glabrous.
Leaves 1-2 inches long ; those of the stem merely toothed, or almost
entire, attenuated at the base. Racemes in fruit elongated. Flowers minute.
Siliques nearly half an inch long on extremely short peduncles:
valves obtuse. Style very short and thick. Cotyledons o =
5. 'N. sinuatum (Nutt.! mss.): “ decumbent; leaves pinnatifid ; segments
lanceolate, subserrate or toothed on the lower margin ; pedieels spreading or
recurved, longer than the oblong acute silique; style nearly one-third the
length of the silique.
“ Banks o f the Oregon and its tributaries ; also in Arkansas.—Glabrous.
Leaves all equally pinnatifid ; the terminal segments more or less confluent.
Flowers rather large, bright yellow. Sepals ovate. Petals oblong-ovate.
Silique about one-third of an inch long, slightly curved.” Nutt. Cotyledons o =
6. N. curvisiliqua (Nutt, mss.) : erect, branching; leaves lanceolate, pinnatifid,
acute, somewhat clasping at the base ; lobes linear-lanceolate and
spreading, the uppermost nearly entire ; raceme in fruit elongated; siliques
linear, acuminate, falcate, twice as long as the pedicels. Hook. fl. Bor.-Am.
1. p. 61. (sub Sisymb.)
North West Coast; in sandy soil, near streams. Douglas ; on the Oregon,
Nuttall!—(l) Stem about a foot high, minutely pubescent. Flowers
small, corymbed. Silique smooth, about an inch long, somewhat torulose.
Seeds in a double series. Hook.—-Our specimen of this plant, from Mr. Nut-
tall, differs in several respects from the description of Hooker. The lobes of
the leaves are ovate-lanceolate. The siliques (not quite mature) are oblong,
arcuate, and rather shorter than the pedicels, which are recurved at the base,
and spreading. The flowers are larger than in any of the preceding species
of this section. Cotyledons o =
7. N. palustre (DC.): leaves pinnately lobed, clasping and ciliate at the
base; lobes confluent, toothed, glabrous ; root fusiform; petals as long as the
sepals; silique spreading, obtuse at each end, somewhat turgid.—DC. syst.
2. p. 191; Hook. fl. Bor.-Am. 1. p. 39; Cham,, f Schlecht. inLinncea, 1.
p. 15.
Wet places, Arctic America to New-Orleans! and west to Oregon! June-
Aug.—fl. Stem 1-2 feet high, erect, glabrous, branching above. Leaves 2-3
inches long; lobes oblong-lanceolate. Flowers very small. Peduncles of
the fruit 2-4 lines long, slender, spreading almost horizontally . Silique 3-4
lines in length, more or less ovate or ovate-oblong, slightly curved, crowned
with a very short style.
8. N. amphibium (R. Brown) : leaves oblong-lanceolate, pinnatifid or ser-
10