rather strongly ciliate in var. /?.; the margins frequently somewhat undulate
or remotely denticulate. Involucre equalling or rather shorter than the disk,
composed of numerous scales somewhat closely imbricated in several series,
rather rigid, often ciliate; the exterior shorter, almost wholly herbaceous; the
inner with more acute slightly spreading herbaceous summits. “ Rays rose-
purple, 30—40, Nutt.” Achenia rather broad, compressed, narrowed at the
base as if slightly stipitate, 4-nerved, resembling those of A. Amellus, but
smaller and minutely hairy. Pappus brownish.—The description of the
achenia is drawn from var. /3., which differs from Dr. Lindley’s plant only
in the particulars mentioned above.
15. A. Chiletisis (Nees): stem racemose-decompound, hairy above in
lines; the heads somewhat corymbose or racemose at the summit of the
branches; leaves lanceolate, acute, crenate-serrate, clasping, scabrous on
both sides; those of the peduncles small, oblong, squarrose; scales of the
broadly obovate involucre closely imbricated, oblong, with obtuse spatu-
late herbaceous summits; achenia pubescent-hirsute when young. Nees,
Ast. p. 123; DC. prodr. 5. p. 245. A. Radula, Less, in Linncea, 6. p. 125.
ft. leaves scarcely scabrous, except near the margins of the upper surface;
the cauline narrowed towards the base, partly clasping.—A. spectabilis?
Hook. 8f A m .! bot. Beechey, p. 146.
California, Chamisso. p. Monterey, California, Capt. Beechey /—The
plant collected in Capt. Beechey’s voyage is smoother than that described by
Nees, but it accords in other respects. It is possible that the specimen of
Haenke was also collected in California, instead of the mountains of Chili;
as great confusion with regard to the localities is said to exist in his collections
It has certainly much affinity with the Concinni, where Nees places
it, but apparently more with the Amelli. The heads are rather smaller
than in A. Amellus; the herbaceous tips of the involucral scales are loose or
somewhat spreading, with a slight membranaceous margin, somewhat ciliate,
otherwise glabrous; the innermost about the length of the disk, rather
acute. Young achenia compressed, clothed with a somewhat silky pubescence.
* * Heads (large) subglobose, terminating the leafy branches: scales of the involucre
(rather few and Urge), somewhat equal in length, imbricated in 3 or 4 series, folia-
ceous, except the base, and nearly similar to the (small) oval or lanceolate, usually
silky, sessile and entire raweronate leaves, both sides of which are similar in appearance
: achenia glabrous, angled or compressed, many ribbed.—Serieei.
16. A . sericeus (Vent.): stems slender, numerous from the same root,
glabrous below, branched; leaves silvery-canescent on both sides with a
dense Oppressed silky pubescence, lanceolate or oblong, closely sessile, mu-
cronulate, obscurely 3-nerved; heads mostly solitary terminating the short
canescent branchlets; scales of the involucre similar to the uppermost leaves,
silvery, squarrose-spreading, the coriaceous base appressed; achenia many-
ribbed, glabrous.— Vent. hart. Cels. t. 33; Pursh ! fi. 2. p. 548 ; Nutt. !
gen. 2. p. 155; Nees, Ast. p . 51 ; DC. ! prodr. 5. p. 233. A. argenteus,
Michx.! fi,. 2. p. 1 1 1 .
p. leaves and scales of the involucre rather narrowly lanceolate, less silvery.—
A. montanus, Nutt. ! gen. 1. c.
Prairies^ and dry banks of rivers, nearly confined to the valley of the
Mississippi and its tributaries: Arkansas! Mississippi! Missouri! Illinois!
to Wisconsin ! N. W. Territory ! Tennessee and N. Carolina near the mountains,
Nuttall! (var. p.) Schweinitz! Aug.-Oct.—Plant 10-20 inches high
(said to become a little shrubby at the base bv cultivation in Europe), very
elegant; the densely silvery-canescent leaves Iialf an inch to an inch long,
crowded on the branches; the radical ones oblanceolate, sessile, about 3
inches long, distinctly 3-nerved. Heads showy, but variable in size. Rays
20-25, half an inch or more in length, deep violet-blue. Achenia evidently
compressed when mature. Pappus tawny, equal.
17. A. phyllolepis : stems slender, loosely branched; leaves erect, lanceolate,
closely sessile, mucronulate, somewhat hairy or canescent when young;
those of the branches crowded, ovate-lanceolate, acuminate-cuspidate, appressed,
ciliate with long spreading hairs ; heads mostly solitary terminating
the branchlets ; scales of the involucre similar to the upper leaves, loosely-
imbricated in 2-3 series, glabrous except the fringed margins, reticulated,
conspicuously acuminate-mucronate, nearly equal in length; achenia linear,
angled, striate or ribbed, glabrous.—A. sericeus p. microphyllus, DC. I c. ?
A. ciliatus, Nutt, in trans. Amer. phil. soc. (n. ser.) 7. p. 295, not of Walt.
Texas, Berlandier? Drummond! Western Louisiana, Dr. Leavenworth!
Dr. Hale!__Plant 10-18 inches high, with virgate somewhat pubescent or
hairy branches. Leaves coriaceous, pale, scabrous, somewhat 3-nerved,
obscurely reticulated, gradually reduced in size from an inch or more to 4-5
or 6 lines in length; the upper ones more crowded, evidently reticulated, and
conspicuously ciliate with long spreading hairs, which are, however, somewhat
deciduous. Scales of the hemispherical involucre oval or ovate, or the
innermost lanceolate, few, as long as the disk. Heads as large as in the
preceding, or sometimes smaller. Rays about 25, elongated, purple. Achenia
scarcely compressed. Pappus nearly equal, reddish-brown.
* * * Heads (middle-sized) racemose; scales of the turbinate or obovoid involucre imbricated
in several series', rather rigid, silky, the exterior successively shorter, all with
short herbaceous tips: corolla of the disk as well as the (12—15) rays purple or violet:
achenia silky-villous: leaves small, lanceolate or oblong, entire, closely sessile, pale,
when young canescent, of the same color and appearance both sides.—Concolores.
18. A . concolor (Linn.): stem simple or sparingly branched, virgate;
leaves crowded, oblong-lanceolate, mucronulate, minutely silky both sides,
or sometimes nearly glabrous when old; the upper ones acuminate-mucronate,
appressed; heads in a simple or compound virgate raceme ; scales of
the involucre lanceolate, acute, somewhat appressed; achenia silky-villous.
—Linn. ! spec. (ed. 2) 2. p. 1228 ; Walt.! Car. p. 209 ; Michx.! fi. 2. p.
I l l ; Willd. spec. 3. p. 2029; Pursh ! fi. 2. p. 448; Nutt.! gen. 2. p. 115 ;
E ll.! sk. 2. p. 350 ; Nees, Ast. p. 115; DC. ! prodr. 5. p. 243. A. caule
simplicissimo, &c. Gronov.! fi. Virg. ed. 2. p. 123. A. foliis lanceolatis
sessilibus alternis, &c. Gronov. ! 1. c. p . 125.
Dry sandy soils, and in pine barrens, New Jersey! to Florida! and Louisiana
! Aug.-Nov.—Plant 1-3 feet high, with somewhat the habit of a Lia-
tris, sometimes with a tuberous root, often simple or branched only towards
the base, and bearing the heads in a long virgate raceme, on short (erect or
recurved) peduncles, which are furnished with minute bract-like leaves,
frequently branching above and bearing several shorter racemes or sometimes
solitary heads. Leaves 1-3 nerved, often obscurely reticulated, rather
rigid, grayish; the lower about an inch long, and partly clasping; the upper
successively reduced in size, oval or lanceolate, mucronate or cuspidate.
Pappus rusty or reddish.
19. A. Menziesii (Lindl.): leaves, as well as the stem, canescent with a
somewhat scabrous pubescence, lanceolate or oblong-linear, closely sessile,
acute; heads racemose ; scales of the involucre obtuse, somewhat squarrose.
—Lindl. ! in Hook. fi. Bor.-Am. 2. p. 12, &f DC. prodr. 5. p, 243.
Oregon, Menzies!—Leaves all slightly auriculate and clasping at the
von. II.—15