variety. The involucre, at first more or less turbinate, becomes somewhat
hemispherical when old.
2. D. ericoides: strigosely canescent; stems branching from near the
sufirutescent. base; leaves acerose-subulate, imbricated, mucronate-pilife-
rous; scales of the involucre lanceolate-linear, acute, 1-nerved, with scarious
margins, loosely imbricated in about 3 series ; exterior pappus very minute;
young achenia pubescent.—Inula ? ericoides, Torr.! in ann. lyc. New York,
. ■ Chrysopsis ericoides, Eaton, man. bot. Eucephalus ericoides,
Mutt. in trans. Amer. phil. soc. (n. ser.) 7. p. 299.
° 5 t},le ™nadian River? -Dr' James! (collected in Long’s expedition to
the Rocky Mountains.)—Plant apparently 6-8 inches high, clothed quite to
the summit of the branches with appressed strigose and hispidly-ciliate heath-
hke leaves; those near the base 2 or more lines long; those of the branches
scarcely a line long, thickened, concavo-convex, obscurely 1-nerved. Heads
solitary, rather small. Scales of the involucre rather few. Rays 10-15,
longer than the disk, apparently not yellow; the disk-flowers about 12. Appendages
of the style oblong, much shorter than the stigmatic portion. Pappus
ot rather few capillary bristles ; the exterior of about as many in proportion
to the inner as m D. linariifolius.
3. D. alpinus (Nutt.) :• stems several from the sufirutescent base, simple,
tomentose-pubescent, naked at the summit; leaves crowded, erect, liniar-
oblong, mucronulate, rather rigid, scabrous, villous-pubescent when young,
1-nerved, flat, with cartilaginous minutely serrulate-scabrous margins;
scales ot the hemispherical involucre linear, acute, 1-nerved, with scarious
margins, pubescent, imbricated in about 3 series ; exterior pappus of rather
numerous setaceous bristles; young achenia compressed, silky-villous.__
Nutt, in trans. Amer .p h il soc. (n. ser.) 7. p . 304. Chrysopsis alpina,
N u tt.! mjour. acad. Philad. 7. p. 34, t. 3 ,/. 2.
Rocky Mountains, near the Flat Head River, Mr. Wyeth! June— Plant
3-4 inches high. Leaves about 4 lines long and one in breadth. Heads as
large as in D. linariifolius ; the rays “ pale violet-purple,” 12-15, elongated.
Appendages of the style subulate-linear, as long as the stigmatic portion.
§ 2. Bristles o f the inner pappus unequal, some o f them (the innermost) cla-
vellate or slightly thickened at the summit; the exterior of copious short
slightly squamellate bristles: achenia (pubescent or glabrous) obovoid,
more or less compressed, 5-8-nerved: involucre shorter than the disk: leave's
scattered, membranaceous, veiny, entire: heads in compound corymbs:
corolla of the disk deeply 5-toothed: rays 8-12, white, or somewhat ochro-
leucous— T riplopapptjs. (Species o f Dcellingeria, Nees. Diplostephium
§ 1. Eudiplostephium, DC.)
* The longer bristles of the inner pappus with manifestly daveUate tips: appendages of
the style linear-subulate, elongated.
4. D. cornifolius (Darlingt.): stem slender, terete, pubescent-scabrous
above, sparingly corymbose-paniculate at the summit; leaves elliptical, or
broadly lanceolate, conspicuously acuminate at each end, ciliate, hairy’on
the veins beneath ; heads few, scarcely corymbose, on divaricate pedicels 1
achenia glabrous— Darlingt.! fi. Cest. p. 475.. Dcellingeria cornifolia,’
Nees, Ast. p. 181. Diplostephium cornifolium, DC.! prodr. 5. p. 273. Aster
Americanus latifolius albus, &c. P lu k .! aim. p. 56, t. 79, ƒ. 1. A caule
infirmo, foliis ovatis, &c. Gronov.! Virg. ed. 1. p. 99. A. divaricatus
L in n .! spec. 2. p. 873 (ex syn. Pluk. Sy Gronov. supr. cit.); not of herb
L in n .; Spreng. syst. 3. p . 529 ? A. cornifolius, Muhl. in Willd. spec. 3.
p . 2039 ; Bigel. jl. Bost. ed. 2. p. 3l3. A. infirmus, Michx. ! f . 2. p. 109.
A. humilis, Pursh, fl. 2. p. 548 (excl. syn. Willd.) ; Ell. sk. 2. p. 366.
Chrysopsis humilis, Nutt. gen. 2. p. 153 ?
Woodlands &c. from (Canada, Michaux,) Massachusetts, New York!
and Pennsylvania! to Virginia! and the mountains and upper country of
the Southern States! Aug.-Sept.—Stem 1-2 feet high, sometimes flexuous.
Leaves somewhat rhombic-oblong or oval (the uppermost oblong-lanceolate),
tapering to the base and almost petioled, 2-4 inches long, 1-2 wide. Heads
larger and much fewer than in the following, 2-5 on the somewhat paniculate
branches; or very loosely corymbose at the summit. Scales of the
involucre oblong-lanceolate, obtuse, slightly pubescent; the innermost
shorter than the disk, the exterior very short. Achenia large, obovoid,
fuscous, turgid, but evidently compressed, 7-8-nerved, viz : with one nerve
on each margin, and 3.on one side and 2 or 3 on the other. Pappus reddish-
brown ; the exterior very copious; a large portion of the interior clavellate
and obtuse— A very distinct species.
* * The longer bristles of the inmer pappus slightly thickened towards the summit
(under a lens), but scarcely davellate: appendages of the style short, triangular-subulate
or oblong. *
5. D. amygdalinus: stem slightly striate, smooth, or scabrous above, co-
rymbosely branched at the summit; leaves ovate-lanceolate, oblong, or sometimes
oval, more or less acute or acuminate, scabrous-ciliolate, sessile, or
abruptly narrowed into a slight petiole; heads numerous, in loose corymbs ;
scales of the short involucre loosely imbricated, obtuse; achenia minutely
hairy.—Aster amygdalinus, Lam. diet. 1. p. 305 ? (excl. syn. Ast. Acadiensis,
&c. Town, herb.) ; E ll.! 1. c.. (partly.) A. humilis, Willd. spec. 3. p.
2038, 8f hort. Berol. t. 67, fide Nees. Chrysopsis amygdalina, Nutt. 1. c. ?
Diplostephium amygdalinum, Cass, in diet. sci. nat. 37. p . 486 ? Dcellingeria
amygdalina, Nees, Ast. p. 179.
/3. stem branching; heads rather large.—D. cornifolius, Lindl. ! in herb.
Torr. (partly.)
y. more scabrous and rigid; heads smaller. — Dcellingeria cornifolia,
Lindl.! in Hook.! compan. to bot. mag. 1. p. 98.
Moist places, New Jersey! Pennsylvania? and throughout the Southern
States! /3. Alabama, Dr. Gates ! Louisiana, Dr. Hale ! Arkansas, Dr.
Pitcher! y. Louisiana, Drummond! Dr. Leavenworth! Aug.-Sept.—Stem
1-3 feet high, often producing straggling branches. Leaves shorter and
broader than in the following, sometimes ovate or oval and obtuse, but usually
acute or acuminate. Scales of the involucre scarcely longer than the mature
achenia, nearly glabrous. Achenia and pappus nearly as in D.' umbellatus.
—Both this and the following species are subject to considerable variation,
and perhaps are not always readily discriminated, but we think they are distinct.
This species is nearly confined to the southern portion of the United
States, while the following abounds in the Northern States and Canada.
They are not satisfactorily distinguished by those who recognize two species,
and a portion of the synonymy is very uncertain. Perhaps the original A.
amygdalinus, as well as A. umbellatus, was founded on the present species
(as is certainly the case with the plant cited from Tournefort’s herbarium),
although Lamarck’s plant is said to have been derived from Virginia.
6. D. umbellatus: stem striate, smooth or somewhat scabrous, fastigiate-
corymbose at the summit; leaves elongated lanceolate, attenuate-acuminate,
tapering at the base usually into a slight petiole, the margins ciliate-scabrous;
heads numerous, usually in fastigiate corymbs; scales of the short involucre ob-
tusish, rather closely imbricated ; achenia minutely hairy.—D. umbellatus