ciliate; the exterior with acute or acuminate herbaceous squarrose-spreading
tips; rays 5-6 ; pappus of 2 small subulate chaffy awns.—H. divaricatus,
Michx. ! fl. 2. p. 141; Ell. ! sic. 2. p. 428 ; not of Linn. H. strumosus,
var. pallidus, Ell. ! 1. c. p. 420. H. parviflorus, Bernh. in Spreng. syst. 3.
p. 617? but not of H. B. Sc K., (which apparently has the priority in
publication.)
/3. leaves more sharply serrate, the soft pubescence of the lower surface
turning brownish; heads rather larger.—H. divaricatus var. ferrugineus,
E ll .! 1. c.
y. upper leaves ovate ; heads rather larger ; involucre more squarrose.—
H. trachelifolius, Hook. ! comp, to hot. mag. 1 . p. 98.
Thickets, and in alluvial soil, Upper Canada! (Goldie, in kerb. Hook.)
Western Pennsylvania! Ohio! Indiana! and Kentucky! to the western
part of Georgia! and to Louisiana! y. Covington, Louisiana, Drummond!
July—Sept.—Stems growing usually in tufts, 3-6 feet high, 2-3-chotomously
branched. Leaves clothed beneath with a soft pubescence, and sprinkled
with minute resinous dots, very veiny, and somewhat reticulated, abruptly
contracted into distinct petioles an inch or less in length (it is evidently by a
misprint or error of the pen, that Elliott describes the petioles as 3 to 6 inches
long!): the lower 6 to 10 inches long, 2-3 broad at. the base, tapering to
a long acuminate point, the upper similar but smaller and often entire, or
frequently elongated lanceolate and slightly falcate. Heads somewhat oblong,
nearly half an inch long, about one-third of an inch in diameter. Chaff
of the receptacle oblong, pubescent at the apex, and more or less 3-toothed.
Rays nearly an inch long. Throat of the disk-corolla scarcely longer than
the lobes, pubescent towards the base, as well as the short tube. Pappus
shorter than the nearly glabrous achenia.—Somewhat variable in foliage, &c.;
but remarkable for its very few rays, which are large for the size of the head,
its smooth much-branched stems, and thin distinctly petioled leaves.
29. H. Schweinitzii: stem strigose-pubescent, branching above ; leaves
opposite (or those of the branches alternate), narrowly lanceolate, tapering to
a slender acute point, obscurely and sparingly serrulate, narrowed at the
base, nearly sessile, triplinerved, very scabrous above, densely tomentose
and canescent beneath ; heads on slender canescent peduncles terminating
the dichotomous branches ; scales of the involucre ovate-lanceolate, acute or
acuminate, hairy, the tips squarrose ; rays mostly 8; pappus of 2 lanceolate
or ovate-lanceolate chaffy scales.
Near Salem, North Carolina, Schweinitz ! and in Mecklenburg County,
Mr. M. A. Curtis !—Stem apparently 3 to 6 feet high. Leaves thickish;
the lower 6-10 inches long, and scarcely an inch wide near the base; the upper
3—5 inches long, half an inch wide, more closely sessile. Heads rather
larger than in H. microcephalus : involucre somewhat hirsute-canescent;
the scales rather shorter than the disk. Chaff of the receptacle more or less
3-toothed and hairy at the summit. Pappus shorter than the glabrous
achenia.
30. H.leemgatus: stem glabrous and glaucous, branching; leaves opposite,
.or the uppermost alternate, oblong-lanceolate, acute, sessile, entire or
obscurely serrulate, with scabrous margins, smooth and glabrous on both
sides, veiny, indistinctly triplinerved ; heads terminating the dichotomous
branchlets; scales of the involucre ovate, appressed, mostly with acuminate
spreading tips, nearly glabrous; rays 6-8 ; pappus of 2 lanceolate or ovate
concave chaffy scales, and usually of 2 to 4 intermediate squamellte.
Southern States ?—The ticket of our specimen having been lost, we are
uncertain as to its particular locality. It belongs to a plant 4 or 5 feet high,
branching after the manner of H. microcephalus; with somewhat coriaceous
smooth leaves, which are less veiny as well as more obscurely triplinerved
than in that species, pale beneath, acute at the base, but nearly or quite sessile.
Heads about twice the size of those of H. microcephalus, of the same shape,
on slender peduncles; the scales of the involucre (all shorter than the disk)
slightly ciliate. Chaff of the receptacle linear, entire, obtuse. Corolla of
the disk with a long throat, and a very short proper tube. Achenia glabrous,
or with a few minute scattered hairs. Intermediate scales of the pappus
sometimes confluent with the larger ones, all deciduous, as usual in the
genus.
31. II. longifolius (Pursh) : very smooth and glabrous; stems slender,
often numerous from the same root; leaves opposite or rarely alternate,
linear-lanceolate, acutish, entire, obscurely triplinerved, sessile ; the lowermost
and radical tapering into slender margined petioles, rarely somewhat
serrate; heads few, terminating the simple or dichotomous branches; scales
of the involucre ovate-lanceolate; the exterior with lanceolate-subulate
spreading tips, as long as the disk ; rays about 10, narrow ; achenia hairy at
the summit; pappus of 2 ovate-lanceolate concave denticulate-fringed chaffy
scales, and usually with two intermediate squamell*.—Pursh, jl. 2. p. 571 ;
Ell. ! sk. 2. p. 417. Leighia longifolia, Nutt.! in trans. Amer. phil. soc.
(n. ser.) 7. p. 365.
Western part of Georgia! in wet soil. Sept.-Oct.—An anomalous species,
with the aspect of an aquatic Coreopsis, as Elliott remarks, very smooth
throughout. Stems 2 to 4 feet high, nearly simple. Leaves 3-8 inches
long, one-fourth to half an inch wide, thickish. Heads as large as in
H. microcephalus; the glabrous scales of the involucre somewhat fleshy,
appressed, except the slender herbaceous tips. Rays about half an inch
long. Chaff of the receptacle narrow, glabrous, 3-toothed. Achenia glabrous,
except the very summit. Pappus deciduous, as in the whole genus ;
the small intermediate scales frequently confluent with the larger ones.
t Obscure or little-known species.
32. II. pauciflorus (Nutt.): leaves opposite, linear-lanceolate, acuminate,
serrate, nearly smooth; stem naked, trichotomous, few-flowered ; scales of
the involucre closely imbricated, ovate. Nutt. gen. 2. p. 177.
Lower Louisiana.—Plant 4-5 feet high. Leaves sometimes ternately
verticillate, very long, paler beneath and somewhat pubescent. Ray and
disk nearly the same color. Nutt.—This species is unknown to us ; we find
no specimen in the herbarium of the Academy of Natural Sciences.
33. I t pumilus (Nutt.): hirsutely pilose and scabrous; leaves opposite,
ovate-lanceolate, attenuated below, subpetiolate, nearly entire, 3-nerved ;
upper leaves lanceolate, alternate ; involucrum hoary, hispid, the scales imbricated,
lapceolate, acute, as well as the receptacular pale*; achenium
smooth.—Nutt, in trans. Amer. phil. soc. (n. ser.) 7. p. 366.
/3. ? Nicolleti: somewhat strigose-canescent: stem simple; leaves (the
lowest wanting) lanceolate, 1-nerved, tapering to the base, sessile, obscurely
serrulate; the uppermost alternate; scales of the involucre lanceolate or subulate,
canescently pubescent; rays 14-20 ; pappus of 2 oblong-lanceolate
chaffy scales.
Rocky Mountains of the Platte, Nuttall; who describes it as a perennial,
single-stemmed species, about a foot highythe leaves 2-3 inches long, about
an inch wide. Heads 3-5, apparently sessile. Rays 16. Chaff of the
achenium rather large and wide.—The var. /3. ? collected near Devil’s Lake
in the N. W. Territory, by Mr. Nicollet, has scabrous hoary leaves, about
half an inch wide, and pretty large heads for the size of the stem. It is perhaps
different from Mr. Nuttall’s plant, which is unknown to us ; but the specimens
are insufficient. We have seen a fragment of the same species, col