conical. Corolla of the disk brownish-purple at the apex. Achenia minutely
pubescent. Lower leaves oblong, triplinerved, tapering to the base; the
upper lanceolate-linear, strongly decurrent.
H. Mexicanum (H. B. & K.) is said by Nuttall (in tram. Amer. phil. soc. 1. c.) to
have been collected in Louisiana by Mr. Teinturier. We have seen no specimens
which accord with the Mexican plant.
H. longifolium (Smith): leaves linear-lanceola,te, entire, very smooth ; peduncles
naked, elongated. Smith in Rees, crycl. H. autumnale, Mill. diet. ed. 8, ex Smith.
H. pmnilmn of Willd. (Ennrn. suppl. p. 60,) of unknown origin, is at present
not known either in the Berlin Garden or in the herbarium of Willdenow.
II. quadripartitum (Link, enum. 2. p. 338) is probably a state of H. quadri-
dentatum.
II. cdlissimum of Link, is described in the Index Seminum of the Berlin Garden
for 1840 (fide IAnncea, 15. suppl. p. 83)-from a plant raised from seeds sent by Dr.
Engelmann of St. Louis: we have not seen the description.
H. commutatum, Link, 1. c. is also said to be a new species from North America.
128. LEPTOPODA. Nutt. gen. 2. p. 174; Ell. sic. 2. p . 445.
Heads many-flowered, radiate ; the ray-flowers in one or more series, ligu-
late, cuneiform, 3-4-cleft at the summit, nearly or quite destitute of tube,
neutral. Scales of the involucre in 1-2 series, spreading or reflexed ; the
exterior numerous, fbliaceous, lanceolate-subulate ; the inner very short,
chaffy. Receptacle conical or hemispherical, naked, areolate; the areolse
becoming fleshy. Corolla with a short narrow tube, and an elongated cylin-
draceous 4-5-toothed throat; the teeth short and obtuse, glandular-bearded.
Branches of the style short, slightly dilated and truncate at the apex. Ache-
nia short, truncate at each end, somewhat cylindrical or turbinate, many-
striate. Pappus of 6-12 (rarely 5) membranous and silvery oblong
(mostly nerveless and awnless) scales, denticulate, lacerate, or fimbriate,
longer than the achenia.—Perennial (North American) herbs, with the habit
&c. of Helenium ; but usually with simple fistulous stems, naked above,
and terminated by a solitary large head. Flowers of the ray and disk yellow
or sometimes brownish-purple, sprinkled with resinous globules; the
former mostly pubescent externally.
The first section of the genus is somewhat peculiar in habit: the second is only
to be distinguished from Helenium by its neutral rays.
§ 1. Stems mostly simple, naked at the summit, and terminated by a single
large head: rays numerous (12-40), spreading: pappus aimless : peduncle
commonly dilated or obconical under the head.—L eptopoda proper.
* Achenia glabrous, glandular-dotted: scales of the pappus slightly thickened or obscurely
nerved at the base.
1. L . Helenium (Nutt.): glabrous, or when young sometimes pubescent
at the summit; leaves lanceolate or linear-lanceolate, elongated, entire, or
often denticulate, mostly decurrent; the radical and lowermost tapering into
petioles; scales of the pappus lacerate, especially near the summit, often
somewhat pointed with a central bristle; rays 20-30 in a single series.
Nutt. gen. 2. p. 174 ; DC. 1. c. L. Helenium & denticulata, Nutt, in trans.
Amer. phil. soc. (n. ser.) 7. p. 373. L. decurrens, Macbride, in Ell. 1. c.
South Carolina ! and Georgia! to Florida! Alabama! and Louisiana! in
wet soil, like all the species. March-April.—Stem 1-2 feet high. Lower
cauline leaves 4-7'inches long, 1-nerved ; the primordial small. Heads an
inch and a half in diameter, including the rays.
2. L. incisa: glabrous; leaves lanceolate, rather obtuse, sessile, not decurrent,
sinuate-pinnatifid or incised ; scales of the pappus lacerate or slightly
fimbriate at the summit; rays about 40 (always?) in a double or triple series.
Georgia, Mr. L. Le Conte!—Plant with the habit of L. puberula, and with
the incised or pinnatifid leaves so common in that species; but the achenia
perfectly glabrous, strongly striate; the pappus nearly as in L. Helenium.
Involucre glabrous, very short. The rays in the only specimen we possess
are in 2 or more series.
* * Achenia hairy on the angles: pappus nerveless.
3. Zr. finibriata: glabrous or nearly so; leaves lanceolate or linear-lanceolate,
acute, entire or remotely denticulate, often decurrent; the lower elongated
; the radical oblanceolale ; scales of the pappus deeply fimbriate-cleft
into capillary segments.—Galardia fimbriata, Michx. fl. 2. p. 142 ?
East Florida, Dr. Leave/riworth ! Texas, Drummond! Dr. Leavenworth !
growing in wet soil, and in pine barrens along streams, like all the other
species. April-May.—Stem occasionally forked above, 1-2 feet high.
Leaves resembling those of L. Helenium. Rays rather numerous, in a
single series. Receptacle oblong-conical. The scales of the silvery pappus
are fully half the length of the corolla, and beautifully dissected about to the
middle into a capillary fringe.—This is very probably not the Galardia fimbriata
of Michaux, although it best accords with his character; but, since that
name cannot properly be employed for either of the species already described,
it may in any case be adopted for the present very distinct species, for which
it is very appropriate.
4. L. puberula (Macbride): stem tomentose-pubescent and somewhat viscid
; leaves linear-lanceolate (thickish), often toothed ; the cauline not decurrent
; the radical sometimes obovate-lanceolate, often incised ; scales of
the pappus obtuse, lacerate-denticulate at the summit, or nearly entire.—
Macbride, in Ell. sk. 2. p. 445, (excl. syn. (Michx?) ; DC. 1. c. Helenium
vernale, Wall., fide Ell.
/?. pinnalifida: radical and lower cauline leaves incisely toothed or pinnatifid.—
L. pinnatifida, Schwein.J herb.; Nutt.! in trans. Amer. phil. soc.
(n. ser.) 7. p. 372. '
North Carolina! to Georgia! and Florida! April-May.—Stem 1-2 feet
high, usually fistulous. Head, including the 20-30 rays, often 2 inches in
diameter.
5. L. brevifolia (Nutt.): stem glabrous below, minutely pubescent at the
summit; leaves all entire or obscurely denticulate; the lower and radical
oblong-spatulate, obtuse ; the cauline more or less decurrent; the uppermost
lanceolate, often acute; scales of the pappus obtuse, slightly denticulate or
lacerate at the summit.—L. puberula, Ell. 1. c., partly.
/?. stem stouter and taller; leaves larger; the cauline more strongly de-
current.—L. integrifolia, M. A . Curtis! mss.
North Carolina! to Alabama! common. /3. Raleigh, N. Carolina, Mr.
Curtis ! May-June.—Stem 1-3 feet high, not unfrequently slightly branched