Bor.-Am. 2. p. 12, Sfin DC. prodr. 5. p. 241. A. ramulosus a.,
Lvndl.. in Hook. I. c. p . 13, Spin DC. I. c. p . 243. A. bracteoiatus, Nult,
m trans. Amer. phil. soc. I. c. ?
Arctic America, from Fort Franklin on the Mackenzie River, to Cumberland
House on the Saskatchawan, Richardson!—Stem 1-2 feet high.
Leaves very numerous, 3 4—2 inches long, 1-nerved or obscurely 3-nerved,
usually broadest at the base, abruptly acute or obtuse, but tipped with a mu-
cronate bristle. Heads in a simple or more or less compound narrow raceme,
larger than the ordinary states of A. multiflorus; the scales of the nearly
glabrous involucre more loose, equal, and acute.—The A. falcatus and the
typical A. ramulosus of Lindley (from Fort Franklin and Cumberland House)
appear to us entirely similar; and the affinity of the species is clearly with
A. multiflorus. J
41. ^4. Nuttallii: smooth and nearly glabrous; branches racemose, simple,
rather naked, bearing solitary or few heads ; leaves linear, rigid, entire, with
scabrous margins ; the upper sessile or somewhat clasping by a broad base ;
the radical and lowest cauline lanceolate, tapering into a petiole; scales of
the involucre unequal, closely imbricated, linear-oblong, with short herbaceous
tips; the exterior obtuse.—A. ramulosus, Nutt.! in trans. Amer. phil.
soc. («. ser.) 7. p . 293, not o£ Lindl.
Plains of Lewis River, near the Rocky Mountains (about lat. 42°), Nut-
tall /—Plant 6-12 inches high, nearly glabrous to the naked eye; the branches
mostly bearing single subglobose heads, of about the same size of those of
A. ramulosus. Leaves coriaceous, acute; those of the branches few and
small. Involucre hemispherical-campanulate, at length widely hemispherical,
nearly glabrous; the scales appressed, obtuse or abruptly acute; the
exterior successively shorter.—Allied to the preceding, but apparently quite
42. A . campestris (Nutt.): viscid-puberulent; cauline leaves oblong-linear,
entire, mostly obtuse, closely sessile, slightly clasping; the radical
ones oblanceolate, serrulate towards the summit, tapering into a petiole;
heads racemose or slightly panicled ; scales of the involucre lanceolate, very
acute, viscid, rather loosely imbricated in about 3 series, somewhat spreading.—
Nutt.! in trans. Amer. phil. soc. 1. c.
“ Plains of Lewis River, in the Rocky Mountain region : with A. ramulosus
[A. Nuttallii], which it closely resembles, but differs in being every
where somewhat pubescent and viscid, with a strong scent, &c. Stem
about a foot high.” Nultall!—Heads as large as in the preceding. Involucre
rather shorter than the ferruginous pappus. Ovary pubescent.
43. A. bracteoiatus (Nutt.): stem pulverulently pubescent; leaves linear
or oblong-linear, acute, sessile, entire; heads racemose-paniculate, mostly
solitary on the leafy branches; involucre smooth, spreading; the scales oblong,
somewhat acute ; the outermost similar to the branch leaves.—Nutt,
in trans. Amer. phil. soc. l. c.
“ With the preceding, to which it is nearly allied, but remarkable by the
smooth leaf-like involucrum. The radical leaves are unknown. Stem and
branches more leafy than in the two preceding; the leaves nearly all similar.
Flowers lilac-purple, rather large. Nuttall.—This species is unknown to
us : we introduce it here on account of the resemblance it is said to bear to
the preceding.
* * * * * * * * * Heads (middle-sized, or small) mostly racemose: scales of the involucre
imbricated and unequal in length, membranaceo-herbaceous, with short appressed
or somewhat spreading (not squarrose) greenish tips: achenia minutely pubescent
or nearly glabrous: rays (12-30) usually pale or white, often small: stems at
length much branched, racemose or paniculate, rarely corymbose: leaves serrate or entire
(the radical spatulate, obovate, or oblong); the cauline sessile, usually tapering at
the base.—Dumosi.
t Heads small: rays often short.
44. A . racemosus (Ell.) : scabrous-pubescent; stem racemosely much
branched; the heads spicate-racemose and mostly crowded towards the summit
of the long and slender erect branches; leaves rather rigid, linear, sessile,
entire, mucronulate, with minutely serrulate-scabrous margins; those
of the branches short and scattered, spreading, linear-subulate or lanceolate ;
scales of the glabrous involucre subulate-linear, very acute, imbricated in
4 or 5 series, somewhat spreading, the innermost fully as long as the disk;
rays very short.—Ell. ! sk. 2. p. 348.
Damp or dry soil, Paris Island, South Carolina, Elliott! Florida, Dr.
Leavenworth ! Sept.-Oct. (Ell.)—Stem 2-3 feet high, erect, producing very
numerous (rather strict ? and mostly simple) slender virgate branches, along
the upper part of which the small heads (scarcely as large as in'A. multiflorus)
are disposed, on peduncles 1 to 3 lines long, or seldom longer; forming
either crowded or often loose spicate racemes, 3-5 inches long; the lower
heads shorter than the leaves which subtend them. Lower leaves apparently
2-3 inches long, and 2-3 lines wide; those of the branches 4-2 lines long,
with somewhat hispidly scabrous margins (under a lens). Scales of the
involucre rather rigid, nearly glabrous, numerous; the exterior shorter;
the innermost somewhat membranaceous, in the young state manifestly
longer than the disk, spreading above. Rays very small, linear, pale purple,
scarcely exserted beyond the disk or the involucre. Achenia minutely
pubescent.—A very distinct species, which we have only seen from the
sources mentioned above.
45. A. B a ld im n ii: scabrous-pubescent throughout, stem paniculate-compound
; the heads solitary or loosely racemose on the branchlets; leaves
rigid, closely sessile, partly clasping, entire, very scabrous above, mucronulate
; the cauline ones oblong-linear; those of the branches and branchlets
short, erect, oblong-lanceolate or ovate-subulate, acuminate-mucronate;
scales of the involucre linear, acute, minutely pubescent, rather loosely
imbricated in 3 or 4 series.
a. leaves appressed and crowded on the branchlets; scales of the involucre
narrowly linear, very acute.
/J. leaves more scattered on the branchlets; scales of the involucre broader,
acute.—A. coridifolius, Hook.! compan. to hot. mag. 1. p. 97 (partly), not
of Michx.
Dry soil? a. Georgia, Baldwin! (v. sp. in herb. Schweinitz, now herb,
acad. Philad.; the specimens mixed with A. coridifolius and A. ericoides.)
18. Jacksonville, Louisiana, Drummond! New Orleans, Dr. Ingalls!—Plant
more closely allied to A. dumosus /J. coridifolius than to any other species,
nearly similar in habit, the size and disposition of the heads, &c.;
differing, however, in its rough or even minutely hispid pubescence, more
acute and cuspidate branch-leaves, and especially in the (fewer) acute scales
of the involucre. It may also be compared (especially var a.) with the species
of our section Brachyphylli), which it resembles in the short and nearly
uniform upper leaves, which are mostly broadest at the base and partly
clasping, and in the short rough pubescence; but the involucre, achenia, &c.
are abundantly different. The fully developed branches of A. azureus (without
the lower leaves) somewhat resemble var /3. of this species; but they
may be distinguished by their larger heads, with the scales of the turbinate
involucre much more numerous, broader, and appressed, &o. The radical
and lowest cauline leaves are unknown to us : those of the stem are an inch
to an inch and a half long ; those o f the branches gradually reduced to one