quinate; _leaflets thin_, ovate-lanceolate (_1--3' broad), sharply and
irregularly toothed; fruit glabrous_, 11/2--3'' broad; oil-tubes mostly
one in the intervals (sometimes 2 or 3).--Along the Alleghanies from
Penn. to N. C. Aug.
2. A. hirsuta, Muhl. _Pubescent above_; leaves twice pinnately or
ternately divided; _leaflets thickish_, lanceolate to oblong (_5--10''
broad), serrate; fruit pubescent_, 2'' broad; oil-tubes 3--6 in the
intervals. (Archangelica hirsuta, _Torr. & Gray_.)--Dry ground, Conn. to
Minn., Tenn., and Fla. July.
[*][*] _Seed loose; oil-tubes indefinite (25--30); upper petioles not so
prominent._
3. A. atropurpurea, L. Very stout, glabrous throughout, with dark purple
stem; leaves 2--3-ternately divided, the pinnate segments of 5--7
lanceolate to ovate leaflets (1--11/2' broad), sharply mucronate-serrate.
(Archangelica atropurpurea, _Hoffm._)--River-banks, Lab. to Del., Ill.
and Minn. June.
4. CONIOSELINUM, Fisch. HEMLOCK-PARSLEY.
Calyx-teeth obsolete. Stylopodium slightly conical. Fruit oval,
flattened dorsally, glabrous, the dorsal ribs very prominent, the
lateral ones extended into broad wings; oil-tubes 1--4 in the intervals,
4--8 on the commissure; seed slightly concave on the inner face.--Tall
slender glabrous perennial, with finely 2--3-pinnately compound leaves,
few-leaved involucre or none, involucels of elongated linear-setaceous
bractlets, and white flowers. (Compounded of _Conium_ and _Selinum_,
from its resemblance to these genera.)
1. C. Canadense, Torr. & Gray. Leaflets pinnatifid; wings nearly as
broad as the seed; oil-tubes 2--3 in the intervals, sometimes 1 or
4.--Swamps and cold cliffs, from Maine to Minn., southward to N. C. (in
the higher mountains), Ind., Ill., and Mo. Aug.--Oct.
5. TIEDEMANNIA, DC.
Calyx-teeth evident. Fruit ovate to obovate, flattened dorsally; dorsal
ribs filiform, the lateral broadly winged, closely contiguous and
strongly nerved next to the body (giving the appearance of 5 dorsal
ribs); oil-tubes solitary in the intervals, 2--6 on the commissure;
stylopodium short, thick-conical.--Glabrous erect aquatic herbs, with
leaves reduced to petioles or of few narrow leaflets; involucre and
involucels present, and flowers white. (Dedicated to the anatomist
_Prof. Tiedemann_, of Heidelberg.)
1. T. teretifolia, DC. Stem hollow, 2--6 deg. high; _leaves reduced to
cylindrical hollow pointed nodose petioles_; oil-tubes filling the
intervals.--Ponds and swamps, Del. to Fla., and west to La. Aug., Sept.
2. T. rigida, Coult. & Rose. (COWBANE.) Stem 2--5 deg. high; _leaves simply
pinnate_, with 3--9 linear to lanceolate entire or remotely toothed
leaflets; oil-tubes mostly small. (Archemora rigida, _DC._)--Swamps,
N. Y. to Minn., south to the Gulf. Aug. Poisonous; roots tuberiferous.
6. HERACLEUM, L. COW-PARSNIP.
Calyx-teeth minute. Fruit broadly oval or obovate, like Pastinaca, but
with a thick conical stylopodium, and the conspicuous obclavate
oil-tubes extending scarcely below the middle.--Tall stout perennial,
with large ternately compound leaves, broad umbels, deciduous involucre,
and many-leaved involucels, white flowers, and obcordate petals, the
outer ones commonly larger and 2-cleft. (Dedicated to _Hercules_.)
1. H. lanatum, Michx. Woolly; stem grooved, 4--8 deg. high; leaflets broad,
irregularly cut-toothed.--Wet ground, Newf. to the Pacific, and
southward to N. C., Ky., and Kan. June.
7. PASTINACA, L. PARSNIP.
Calyx-teeth obsolete. Fruit oval, very much flattened dorsally; dorsal
ribs filiform, the lateral extended into broad wings, which are strongly
nerved toward the outer margin; oil-tubes small, solitary in the
intervals, 2--4 on the commissure; stylopodium depressed.--Tall stout
glabrous biennial, with pinnately compound leaves, mostly no involucre
or involucels, and yellow flowers. (The Latin name, from _pastus_,
food.)
P. SATIVA, L. Stem grooved; leaflets ovate to oblong,
cut-toothed.--Introduced everywhere. (Adv. from Eu.)
8. POLYTAENIA, DC.
Calyx-teeth conspicuous. Fruit obovate to oval, much flattened dorsally;
dorsal ribs small or obscure in the depressed back, the lateral with
broad thick corky closely contiguous wings forming the margin of the
fruit; oil-tubes 12--18 about the seed and many scattered through the
thick corky pericarp.--A perennial mostly glabrous herb, with 2-pinnate
leaves (upper opposite and 3-cleft), the segments cuneate and incised,
no involucre, narrow involucels, and bright yellow flowers in May.
(Named from [Greek: poly/s], _many_, and [Greek: taini/a], _a fillet_,
alluding to the numerous oil-tubes.)
1. P. Nuttallii, DC. Plant 2--3 deg. high; pedicels and involucels
pubescent.--Barrens, Mich, to N. Ala., west to the Rocky Mts.
9. PEUCEDANUM, L.
Calyx-teeth mostly obsolete. Fruit roundish to oblong, much flattened
dorsally; dorsal ribs filiform and approximate; the lateral extended
into broad closely coherent wings; oil-tubes 1--4 in the intervals, 2--6
on the commissure.--Dry ground acaulescent (or short caulescent) herbs,
with fusiform roots, dissected leaves, no involucre, yellow or white
flowers, and stylopodium depressed or wanting. (The ancient Greek name.)
1. P. nudicaule, Nutt. Pubescent, with peduncles 3--8' high; _leaves
bipinnate, the small oblong segments entire or toothed; involucels of
scarious-margined (often purplish) lanceolate bractlets; flowers white
or pinkish; fruit almost round_, emarginate at base, _glabrous_, with
wings hardly as broad as the body, and _indistinct or obsolete dorsal
ribs; oil-tubes solitary in the intervals_.--Minn. to Iowa and Kan.,
and westward. One of the earliest spring bloomers.
2. P. foeniculaceum, Nutt. Tomentose or glabrous, with peduncles 8--12'
long; _leaves finely dissected, with short filiform segments; involucels
gamophyllous, 5--7-cleft, with conspicuously hairy margins; flowers
yellow; fruit broadly oblong, glabrous_, with wings half as broad as the
body, and _prominent dorsal ribs; oil-tubes 1--3 in the
intervals_.--Minn. to Tex. March--April.
3. P. villosum, Nutt. More or less pubescent throughout, 3--8' high;
_leaves finely dissected, with very numerous narrow crowded segments;
involucels of ovate to linear bractlets; flowers yellow; fruit oval_,
with wings half as broad as the body, and _prominent dorsal ribs;
oil-tubes 3 or 4 in the intervals_.--Minn. to Neb. and Dak.,
southwestward to Ariz. Root much elongated.
10. CYMOPTERUS, Raf.
Calyx-teeth more or less prominent. Fruit usually globose, with all the
ribs conspicuously winged; oil-tubes one to several in the intervals,
2--8 on the commissure. Stylopodium depressed. Seed-face slightly
concave.--Mostly low (often cespitose) glabrous perennials, from a thick
elongated root, more or less pinnately compound leaves, with or without
an involucre, prominent involucels, and white flowers (in ours). (From
[Greek: ky~ma], _a wave_, and [Greek: ptero/n], _a wing_, referring to
the often undulate wings.)
1. C. glomeratus, Raf. Low (3--8'), with a short erect caudex bearing
leaves and peduncles at the summit, glabrous; rays and pedicels very
short, _making a compact cluster; involucre none; involucel of a single
palmately 5--7-parted bractlet_; fruit globose (3--4'' in diam.); wings
rather corky; _oil-tubes 4 or 5 in the intervals_.--Minn. and Wisc. to
Iowa and Ark., and westward.
2. C. montanus, Torr. & Gray. Of similar habit (1--6' high), glaucous
and mostly glabrous; _rays 3--9'' long_, pedicels very short; _involucre
and involucels of mostly broad membranaceous usually green-veined
bracts_ (more or less united); fruit oblong to orbicular in outline
(3--6'' long); wings thin; _oil-tubes 1--3 in the intervals_.--Neb. to
central Kan., Tex., and westward. April.
11. THASPIUM, Nutt. MEADOW-PARSNIP.
Calyx-teeth conspicuous. Fruit ovoid to oblong, slightly flattened
dorsally; carpel with 3 or 4 or all the ribs strongly winged; oil-tubes
solitary in the intervals, 2 on the commissure. Stylopodium wanting;
styles long.--Perennials (2--5 deg. high), with ternately divided leaves (or
the lower simple) and broad serrate or toothed leaflets, mostly yellow
flowers, and all the fruit pedicelled. (Name a play upon _Thapsia_, so
called from the island of Thapsus.)
1. T. aureum, Nutt. _Glabrous; root-leaves mostly cordate, serrate;
stem-leaves simply ternate_ (rarely biternate); leaflets ovate to
lanceolate, round or tapering at base, serrate; _flowers deep yellow_;
fruit globose-ovoid, about 2'' long, _all the ribs equally
winged_.--Thickets and woodlands, throughout the Atlantic States and
west into the Miss. Valley. Fl. in summer and maturing fruit in late
summer or autumn. Very variable, an extreme form being
Var. trifoliatum, Coult. & Rose. Leaves or leaflets crenate or crenately
toothed. (T. trifoliatum, _Gray_, Man., in part.)--Ohio to Ill.,
westward to Oregon. The common western form.
Var. atropurpureum, Coult. & Rose. Petals dark-purple. (T. trifoliatum,
var. atropurpureum, _Gray_, Man.)--Same range as the species.
2. T. barbinode, Nutt. Loosely branched, _pubescent on the joints_,
sometimes puberulent in the umbels; _leaves 1--3-ternate; leaflets ovate
to lanceolate_, acute, with cuneate base, coarsely cut-serrate, often
ternately cleft or parted; _flowers light yellow_; fruit broadly oblong,
about 3'' long and 2'' broad, _with mostly 7 prominent wings_.--Banks of
streams, N. Y. to Minn., and southward. May--June.--Var. ANGUSTIFOLIUM,
Coult. & Rose, has narrower, more sharply cut leaflets, and fruit more
or less puberulent.--Penn. to Ill.
3. T. pinnatifidum, Gray. Resembling the last, but _puberulent on the
branchlets, umbels, and fruit, with fewer leaves; leaflets
1--2-pinnatifid_, the lobes linear or oblong; one or two leaves near the
base often very large and long-petioled; flowers light yellow; fruit
oblong, 11/2--21/2'' long and 1--11/2'' broad, _all the ribs winged_,
generally three of them narrowly so. (T. Walteri, _Shuttlew._ in
herb.)--Barrens and mountains, Ky. to Tenn. and N. C.
12. LIGUSTICUM, L. LOVAGE.
Calyx-teeth obsolete. Fruit oblong or ovate, flattened laterally if at
all, glabrous; carpels with prominent equal acute ribs and broad
intervals; oil-tubes 2--6 in the intervals, 6--10 on the commissure.
Stylopodium conical.--Smooth perennials, from large aromatic roots, with
large ternately compound leaves, mostly no involucre, involucels of
narrow bractlets, and white flowers in large many-rayed umbels. (Named
from the country _Liguria_, where the officinal _Lovage_ of the gardens
abounds.)
1. L. actaeifolium, Michx. (NONDO. ANGELICO.) Stem stout, branched above
(2--6 deg. high); _leaves very large, 3--4-ternate; leaflets broadly oblong
(2--5' long), coarsely serrate; fruit ovate (2--3'' long)_; seed with
angled back.--Rich ground, S. Penn. to Ky., southward to the Gulf.
2. L. Scoticum, L. (SCOTCH LOVAGE.) Stem simple (1--2 deg. high); _leaves
biternate; leaflets ovate (1--2' long), coarsely toothed; fruit narrowly
oblong (4--5'' long)_; seed with round back.--Salt marshes, along the
coast from Nantucket northward. Aug. (Eu.)
13. AETHUSA, L. FOOL'S PARSLEY.
Calyx-teeth obsolete. Fruit ovate-globose, slightly flattened dorsally;
carpel with 5 thick sharp ribs; oil-tubes solitary in the intervals, 2
on the commissure.--Poisonous annuals, with 2--3-ternately compound
leaves, divisions pinnate, ultimate segments small and many cleft, no
involucre, long narrow involucels, and white flowers. (Name from [Greek:
ai)/tho], _to burn_, from the acrid taste.)
AE. CYNAPIUM, L. A fetid, poisonous European herb, in cultivated grounds,
from N. Eng. and Penn. to Minn. June--Aug.
14. COELOPLEURUM, Ledeb.
Calyx-teeth obsolete. Fruit globose to oblong, with very prominent
nearly equal thick corky ribs (none of them winged); oil-tubes solitary
in the intervals and under the ribs, 2 on the commissure. Seed loose in
the pericarp.--Stout glabrous (or inflorescence puberulent) sea-coast
perennial, with 2--3-ternate leaves on very large inflated petioles,
few-leaved deciduous involucre, involucels of numerous small
linear-lanceolate bractlets (rarely conspicuous or even leaf-like), and
greenish-white flowers in many-rayed umbels. (From [Greek: koi~los],
_hollow_, and [Greek: pleuro/n], _a rib_.)
1. C. Gmelini, Ledeb. Stem 1--3 deg. high; leaflets ovate, irregularly
cut-serrate (2--21/2' long); fruit 2--31/2'' long. (Archangelica Gmelini,
_DC._)--Rocky coasts, Mass. to Greenland.
15. CRANTZIA, Nutt.
Calyx-teeth small. Fruit globose or slightly flattened laterally; dorsal
ribs filiform, the lateral thick and corky; oil-tubes solitary in the
intervals, 2 on the commissure.--Small perennials, creeping and rooting
in the mud, with hollow cylindrical or awl-shaped nodose petioles in
place of leaves, simple few-flowered umbels, and white flowers. (Named
for _Prof. Henry John Crantz_, an Austrian botanist of the 18th
century.)
1. C. lineata, Nutt. Leaves very obtuse, 1--3' long, 1--2'' broad; fruit
1'' long, the thick lateral wings forming a corky margin.--In brackish
marshes along the coast, from Mass. to Miss. July. Very widely
distributed.
16. FOENICULUM, Adans. FENNEL.
Calyx-teeth obsolete. Fruit oblong, glabrous, with prominent ribs and
solitary oil-tubes.--Stout glabrous aromatic herb, with leaves dissected
into numerous filiform segments, no involucre nor involucels, and large
umbels of yellow flowers. (The Latin name, from _foenum_, hay.)
F. OFFICINALE, All., the cultivated fennel from Europe, has become
naturalized along the shores of Md. and Va., and is a common escape.
17. PIMPINELLA, L.
Calyx-teeth obsolete. Fruit oblong to ovate, glabrous, with slender
equal ribs, numerous oil-tubes, and depressed or cushion-like
stylopodium.--Glabrous perennials, with ternately or pinnately compound
leaves, involucre and involucels scanty or none, and white or yellow
flowers. (Name said to be formed from _bipinnula_, referring to the
bipinnate leaves.)
1. P. integerrima, Benth. & Hook. Glaucous, 1--3 deg. high, slender,
branching; leaves 2--3-ternate, with lanceolate to ovate entire
leaflets; flowers yellow; fruit broadly oblong, 2'' long; stylopodium
small or wanting. (Zizia integerrima, _DC._)--Rocky hillsides, Atlantic
States to Minn., E. Kan., and Ark. May.
P. SAXIFRAGA, L., var. MAJOR, Koch. Leaves simply pinnate, with sharply
toothed leaflets; flowers white; fruit oblong, 1'' long; stylopodium
cushion-like.--Rocky shores of Delaware River; Sycamore, Ohio. (Nat.
from Eu.)
18. EULOPHUS, Nutt.
Calyx-teeth prominent. Fruit ovate or oblong, glabrous, with equal
filiform ribs; oil-tubes 1--5 in the intervals; stylopodium conical,
with long recurved styles; seed-face broadly concave, with a central
longitudinal ridge.--Glabrous perennials (3--5 deg. high) from deep-seated
fascicled tubers, with pinnately or ternately compound leaves,
involucels of numerous narrowly lanceolate acuminate bractlets, and
long-peduncled umbels of white flowers. (Name from [Greek: eu~)],
_well_, and [Greek: lo/phos], _a crest_,--not well applied to a plant
with no crest at all.)
1. E. Americanus, Nutt. Radical and lower stem-leaves large,
1--2-pinnately compound, with leaflets cut into short narrow segments;
upper stem-leaves ternate, with narrowly linear elongated leaflets;
fruit 2--3'' long.--Ohio to Ill. and Mo., south to Tenn. and Ark. July.
19. ANTHRISCUS, Hoffm. CHERVIL.
Calyx-teeth obsolete. Fruit linear, notched at base, long-beaked,
glabrous, without ribs (but beak ribbed); oil-tubes none, stylopodium
conical, seed-face sulcate.--Resembling _Chaerophyllum_ in vegetative
characters. (The ancient Roman name.)
A. CEREFOLIUM, Hoffm. Mature fruit smooth and shining. (Chaerophyllum
sativum, _L._)--Naturalized in E. Penn. (From Eu.)
20. BUPLEURUM, L. THOROUGH-WAX.
Calyx-teeth obsolete. Fruit oblong, with very slender ribs, no
oil-tubes, depressed stylopodium, and seed-face somewhat
concave.--Smooth annual, with ovate perfoliate entire leaves, no
involucre, involucels of 5 very conspicuous ovate mucronate bractlets,
and yellow flowers. (Name from [Greek: bou~s], _an ox_, and [Greek:
pleuro/n], _a rib_.)
B. ROTUNDIFOLIUM, L., is very common in fields and cultivated ground,
N. Y. to N. C., west to Mo. and Ark. (Nat. from Eu.)
21. CRYPTOTAENIA, DC. HONEWORT.
Calyx-teeth obsolete. Fruit linear-oblong, glabrous, with obtuse equal
ribs; oil-tubes solitary in the intervals and beneath each rib;
stylopodium slender-conical; seed-face plane.--A glabrous perennial,
with thin 3-foliolate leaves, no involucre, involucels of minute
bractlets or none, and white flowers. (Name from [Greek: krypto/s],
_hidden_, and [Greek: taini/a], _a fillet_, referring to the concealed
oil-tubes.)
1. C. Canadensis, DC. Plant 1--3 deg. high; leaflets large, ovate (2--4'
long), pointed, doubly serrate, often lobed; umbels irregular and
unequally few-rayed; pedicels very unequal; fruit 2--3'' long, often
becoming curved.--N. Brunswick to Ga., west to Minn., E. Kan., and Tex.
June--Sept.
22. SIUM, Tourn. WATER PARSNIP.
Calyx-teeth minute. Fruit ovate to oblong, glabrous, with prominent
corky nearly equal ribs; oil-tubes 1--3 in the intervals; stylopodium
depressed; seed-face plane.--Smooth perennials, growing in water or wet
places, with pinnate leaves and serrate or pinnatifid leaflets,
involucre and involucels of numerous narrow bracts, and white flowers.
(From [Greek: si/on], the Greek name of some marsh plant.)
1. S. cicutaefolium, Gmelin. _Stout_, 2--6 deg. high; _leaflets 3--8 pairs_,
linear to lanceolate, sharply serrate and mostly acuminate, _2--5' long_
(lower leaves sometimes submersed and finely dissected, as in
the next); _fruit 11/2'' long_, with prominent ribs. (S. lineare,
_Michx._)--Throughout N. America.
2. S. Carsonii, Durand. _Weak_, 1--2 deg. high; _leaflets 1--3 pairs_,
linear, sharply serrate, _1--2' long; when submersed or floating, very
thin, ovate to oblong, usually laciniately toothed or dissected_, the
leaf sometimes reduced to the terminal leaflet; _fruit about 1''
long_.--Mass., R. I., Conn., and Penn.
23. BERULA, Koch.
Calyx-teeth minute. Fruit nearly round, emarginate at base, glabrous;
carpels nearly globose, with very slender inconspicuous ribs and thick
corky pericarp; oil-tubes numerous and contiguous about the seed-cavity;
seed terete.--Smooth aquatic perennial, with simply pinnate leaves and
variously cut leaflets, usually conspicuous involucre and involucels of
narrow bracts, and white flowers. (The Latin name of the Water-cress, of
Celtic origin.)
1. B. angustifolia, Koch. Erect, 1/2--3 deg. high, leaflets 5--9 pairs, linear
to oblong or ovate, serrate to cut-toothed, often laciniately lobed,
sometimes crenate (1/2--3' long); fruit scarcely 1'' long. (Sium
angustifolium, _L_.)--Throughout the U. S. July, Aug.
24. ZIZIA, Koch.
Calyx-teeth prominent. Fruit ovate to oblong, glabrous, with filiform
ribs; oil-tubes large and solitary in the broad intervals, and a small
one in each rib; stylopodium wanting; seed terete.--Smooth perennials
(1--3 deg. high), with mostly Thaspium-like leaves, no involucre, involucels
of small bractlets, yellow flowers, and the central fruit of each
umbellet sessile. Flowering in early spring in open prairies and upland
meadows. (Named for _I. B. Ziz_, a Rhenish botanist.)
1. Z. aurea, Koch. _Leaves_ (except the uppermost) _2--3-ternate_ the
radical very long-petioled; leaflets ovate to lanceolate, sharply
serrate; rays 15--25, stout (1--2' long); _fruit oblong, about 2''
long_. (Thaspium aureum, var. apterum, _Gray_, Manual.)--Atlantic
States, west to Minn. and Tex.
Var. Bebbii, Coult. & Rose. A more slender mountain form, with leaflets
more coarsely serrate, the radical leaves smaller and more simple; rays
2--8, slender (2--3' long); fruit oval, 1--11/2'' long.--W. Va. and Va. to
Ga.
2. Z. cordata, DC. Radical leaves mostly long-petioled, _cordate or even
rounder, crenately toothed_, very rarely lobed or divided; _stem-leaves
simply ternate or quinate_, with the ovate or lanceolate leaflets
serrate, incised, or sometimes parted; _fruit ovate, 11/2'' long_.
(Thaspium trifoliatum, var. apterum, _Gray_, Manual.)--Same range as the
preceding, but extending farther westward.
25. CARUM, L. CARAWAY.
Calyx-teeth small. Fruit ovate or oblong, glabrous, with filiform or
inconspicuous ribs; oil-tubes solitary; stylopodium conical; seed-face
plane or nearly so.--Smooth erect slender herbs, with fusiform or
tuberous roots, pinnate leaves, involucre and involucels of few to many
bracts, and white (or yellowish) flowers. (Name perhaps from the
country, _Caria_.)
C. CARUI, L. (CARAWAY.) Leaves pinnately compound, with filiform
divisions.--Naturalized in many places, especially northward. (Nat. from
Eu.)
C. PETROSELINUM, Benth., the common PARSLEY, from Europe, with 3-pinnate
leaves, ovate 3-cleft leaflets, and greenish yellow flowers, is
occasionally found as an escape from cultivation. (Petroselinum sativum,
_Hoffm._)
26. CICUTA, L. WATER-HEMLOCK.
Calyx-teeth prominent. Fruit oblong to nearly orbicular, glabrous, with
strong flattish corky ribs (the lateral largest); oil-tubes conspicuous,
solitary; stylopodium depressed; seed nearly terete.--Smooth marsh
perennials, very poisonous, with pinnately compound leaves and serrate
leaflets, involucre usually none, involucels of several slender
bractlets, and white flowers. (The ancient Latin name of the Hemlock.)
1. C. maculata, L. (SPOTTED COWBANE. MUSQUASH ROOT. BEAVER-POISON.) Stem
_stout_, 2--6 deg. high, streaked with purple; leaves 2--3-pinnate, the
lower on long petioles; _leaflets lanceolate_ to oblong-lanceolate
(1--5' long), acuminate, coarsely serrate, the veins passing to the
notches; pedicels in the umbellets numerous, very unequal; fruit broadly
ovate to oval, 1--11/2'' long.--Throughout the U. S. Aug.
2. C. bulbifera, L. _Rather slender_, 1--3 deg. high; leaves 2--3-pinnate
(sometimes appearing ternate); _leaflets linear_, sparsely toothed
(1--2' long); _upper axils bearing clustered bulblets_; fruit (rare)
scarcely 1'' long.--Common in swamps, N. Scotia to Del., west to Minn.
and Iowa.
27. AEGOPODIUM, L. GOUTWEED.
Calyx-teeth obsolete. Fruit ovate, glabrous, with equal filiform ribs,
and no oil-tubes; stylopodium conical and prominent; seed nearly
terete.--A coarse glabrous perennial, with creeping rootstock, biternate
leaves, sharply toothed ovate leaflets, and rather large naked umbels of
white flowers. (Name from [Greek: ai)/x], _goat_, and [Greek: po/dion],
_a little foot_, probably from the shape of the leaflets.)
AE. PODAGRARIA, L., a common and troublesome weed in Europe, is reported
from R. I. to Del. and E. Penn.
28. LEPTOCAULIS, Nutt.
Calyx-teeth obsolete. Fruit very small, ovate, usually bristly or
tuberculate, with somewhat prominent ribs; oil-tubes solitary in the
intervals; stylopodium conical; seed-face plane or somewhat
concave.--Very slender smooth branching annuals, with finely dissected
leaves (segments filiform or linear), and small white flowers in very
unequally few-rayed pedunculate umbels. (Name from [Greek: lepto/s],
_slender_, and [Greek: kaulo/s], _a stem_.)