certainly that of Asteroidese, although the appendages are unusually narrow
and prolonged.
Subdiv. 4. H e t e r o t h e c e j e , DC.—Rays in a single series. Pappus of the
disk and ray dissimilar.
53. BRADBURIA. Torr. Of Gray; not of Raf.
Heads many-flowered ; the ray-flowers ligulate, pistillate, fertile, in a single
series; those of the disk perfect hut infertile. Involucre hemispherical-
campanulate; the scales oblong-lanceolate, mucronate, membranaceous,
shining, with broad scarious margins, imbricated in 3 or 4 series, appressed.
Receptacle flat, areolate, nearly naked. Corolla of the ray linear, twice the
length of the involucre ; of the disk tubular, slender, 5-toothed, about the
length of the involucre. Branches of the style in the ray-flowers included in
the tube of the corolla, narrowly linear, glabrous, stigmatose to the summit;
in the disk filiform, elongated, barbellate throughout. Achenia of the ray
short, triangular, turgid, villous ; of the disk very short, villous, rudimentary.
Pappus of the ray double ; the exterior of few unequal short squamellate
bristles; the interior of numerous rather rigid barbellate-seabrous capillary
bristles, somewhat longer than the achenium: pappus of the disk of 2 awnlike
bristles, nearly the length of the corolla, somewhat dilated and chaffy
towards the base.—An annual herb, sparsely hispid with rigid spreading
hairs, and glandular-scabrous, with numerous slender and elongated branches.
Leaves linear, very narrow, short, entire, involute when dry; the uppermost
setaceous. Heads solitary, terminating the branchlets. Flowers apparently
yellow.
B. hirtella.
Texas, Drummond!—Stem about 2 feet high, somewhat corymbosely
branched. Leaves rather rigid, numerous, the lower ones about an inch long,
apiculate, sparsely hispid, like the stem, with long bristly hairs arising from
a rigid somewhat dilated base, and minutely glandular-scabrous. Heads
pedunculate, as large as in Chrysopsis graminifolia. Involucre at length
spreading; the scales nearly glabrous, shining, remarkably membranaceous,
1-nerved. Ray-flowers about 12; the achenia slightly obovate, 3-sided,
rather large. Pappus of the disk-flowers of 2 (very rarely one) bristles or
awns resembling those of Agerktum conyzoides: in one of them the chaffy
base is occasionally wanting.—We are not sure that the ray is yellow: if it
prove otherwise, the plant would belong to De Candolle’s division Asterese,
subdivision Heteropappes. The" style is nearly the same with that of Ver-
noniacte.—We dedicate this remarkable genus to the memory of John Bradbury,
who in the year 1811 ascended the Missouri to the Mandan villages,
and made an interesting collection of plants, &c., a portion of which were
published by Pursh in the supplement to his Flora. “ In 1817, he published
in London a journal of his travels in America during the years 1809-
11, in which is contained a great deal of interesting information on the botany
of the Missouri country.” {Short, on Western Botany.) This work we
have never met with.—Bradbury a of Rafinesque’s Florula Ludoviciana, is
founded on Robins’ description of two species of Glycine, one of which appears
to be Centrosema Virginiana, the other perhaps a Galactia.
54. HETEROTHECA. Cass. bull, philom. 1817, diet. 21. p. 130 ; DC.
Calycium, Ell.—Diplocoma, Don.
Heads many-flowered; the ray-flowers ligulate, pistillate, in a single
series ; those of the disk tubular, perfect. Scales of the involucre linear, appressed,
or with somewhat spreading points, imbricated in few series. 1 Receptacle
alveolate, fimbrillate. Corolla of the ray with a slender tube and
an oblong or linear ligule; of the disk slender, somewhat dilated at the
throat, 5-toothed. Appendages of the style in the dislt-flowers lanceolate,
acute, or rarely triangular and obtuse, hispid. Achenia of the ray (sometimes
glabrous) oval, mostly triangular, destitute of pappus ; of the disk obovate
or cuneiform, compressed, hairy, with a double pappus; the exterior
of very short squamellate or somewhat chaffy bristles; the interior of numerous
capillary scabrous bristles mostly in a single series.—Perennial? (N.
American and Mexican) strigose or hirsute herbs, paniculately branched.
Leaves ovate or lanceolate, toothed or serrate, sometimes sprinkled with
resinous dots; the lower petioled and often furnished with a dilated auricu-
late or stipuliform base. Heads in terminal (and often also in smaller axillary)
corymbose panicles. Flowers yellow. Pappus usually reddish or
brownish.
1. H. scabra (DC.): stem hispid and scabrous; the branchlets glandular;
leaves strigose, veiny, dentate-serrate; the upper lanceolate, closely sessile
or partly clasping; the lower oval, coarsely and unequally serrate-toothed,
obtuse or subcordate at the base, petioled ; the petioles dilated at the base
into a roundish foliaceous toothed lamina resembling adnate stipules; heads
in a loose spreading or divaricate corymbose panicle; involucre somewhat
pubescent and glandular, shorter than the pappus; rays oblong-linear; achenia
of the ray glabrous; of the disk silky-villous; inner pappus reddish-
brown, in a single series; the exterior squamellate-setaceous, white.—DC. !
prodr. 5. p. 317. H. Lamarckii, Cass, in diet. sci. nat. 21. p: 131 (fide
descr.); DC.! 1. c. (excl. char. & syn. except Inula subaxillaris, Lam.)
Inula subaxillaris, Lam. diet. 3. p. 259, ex spec, in herb. Desf. (fide Cass.)
I. scabra, Pursh! Jl. 2. p. 531. I. punctata, Muhl. cat. Chrysopsis scabra,
Nutt. gen. 2. p. 151; E ll.! sic. 2. p. 339.
a. Calycium: achenia of the ray oblong, crowned with a manifest cupshaped
epigynous disk.—Chrysopsis scabra, Ell. ' l. c., Sfc. (Perhaps all the
above synonymy belongs here.) Calycium, Ell. 1. c., in a note.
/?. nuda : achenia of the ray broadly oval, the disk obscure.
Sandy soil and dry pastures, South Carolina! near the coast, to Western
Louisiana! and Texas ! Sept.-Oct.—All the specimens from South Carolina
which we have examined present tha “ marginal cup” crowning the ray-
achenia, as described by Elliott, to which his proposed generic name alludes;
and this disk is uniformly nearly obsolete or very inconspicuous in our specimens
from the Western States ! The H. Lamarckii of De Candolle, as to
the plant in his herbarium, we believe to be a state of the present species;
but the character appears to be taken from the Chrysopsis divaricata of Nut-
tall and Elliott; who do not describe the ray-flowers as destitute of pappus,
nor does the latter include that plant in his proposed genus Calycium, as
De Candolle seems to have supposed. The oldest specific name, that of
Inula subaxillaris, Lam., is by no means appropriate, except to a particular