B. nudata (D C .! 1. c.)—Chrysocoma nudata, Michx.! jl. 2. p. 101;
Pursk ! jl. 2. p. 517 ; Ell. ! sic. 2. p. 309.
a. spathuleefolia: radical and lower leaves oblanceolate, 1- or obscurely
3-nerved, tapering into an attenuated base; the cauline ones scattered, often
very few, linear.—B. nudata, DC.! 1. c., mem. comp. t. 5. Chrysocoma
nudata, Nutt. gen. 2. p. 137.
/}. virgata: earliest radical leaves linear-spatulate; the others, and the
(often more numerous) cauline ones narrowly linear, 1-nerved.—B. virgata,
D C .! 1. c. Chrysocoma virgata, Nutt. 1. c.
Borders of swamps, and low pine barrens, New Jersey (Nuttall) and Virginia!
to Florida! Alabama! Louisiana! and Texas ! Aug.-Oct.—Stems
1-2 feet high, slender. Lower leaves 2-3 inches long ; the uppermost very
short, scattered. Scales of the involucre 1-nerved, with somewhat greenish
tips.—The habit is much that of the section Euthamia in Solidago, but the
stems are less inclined to branch. The B. virgata appears to be only a narrow
leaved state of the ordinary plant; but it may, perhaps, be a distinct
species.
41. LINOSYRIS. Lobel; DC. prodr. 5. p. 351, (& Bigelowia § 2. DC.)
Linosyris & Crinitaria, Cass.—Chrysothamnus, Nutt.
Heads 5—many-flowered ; the flowers all perfect and tubular. Involucre
campanulate, obovoid, or oblong, often shorter than the disk; the scales imbricated,
mostly concave or carinate, destitute of herbaceous tips ; the exterior
usually looser and bracteolate, passing into the leaves. Receptacle flat,
alveolate-toothed; the teeth fleshy or somewhat lacerate. Corolla with an expanding
5-cleft or 5-parted limb. Branches of the style with flat linear or
oblong stigmatic portions; the pubescent appendages various in form. Ache-
nia oblong, somewhat compressed, silky-villous. Pappus simple, of copious
scabrous capillary bristles.—Perennial herbs or suffruticose plants (natives
chiefly of Southern Europe, Northern Asia, and North America west of the
Mississippi), branched from the base, and bearing corymbose heads at the
summit. Leaves alternate, crowded, sessile, linear or oblong, mostly entire,
and 1-nerved. Flowers yellow.
§ 1. Involucre 20-30-jlowered, as long as the dish.
1. L . Texana: suffratescent at the base, glabrous, not glutinous; stems
and numerous branches strongly striate-angled ; leaves linear, carinately 1-
nerved, rather rigid; scales of the hemispherical involucre lanceolate, acute,
loosely imbricated in 2 or 3 series ; lobes of the deeply parted limb of the
corolla lanceolate-linear, as long as the tube ; appendages of the style lanceolate,
thicker than the stigmatic portion, and about its length; pappus as long
as the flowers.
Texas, Drummond ! Dr. Riddell!—Stems 1-2 feet high, much branched
at the summit. Leaves 1-2 inches long, less than 2 lines wide, acute, sometimes
with 2 slight undulate lateral nerves, and very minutely and obscurely
dotted. Heads all more or less pedicellate, with few bracteal leaves. Scales
of the involucre smooth, not rigid, strongly 1-nerved, with slight scarious margins,
obscurely ciliate near the apex. Receptacle alveolate-toothed; the
teeth somewhat fleshy. Pappus not very copious, very soft and slender.
Achenia unknown.
2. L. Drummondii : much branched from the suffrutescent base, glabrous,
the young heads and fastigiate branchlets somewhat glutinous ; stems terete;
leaves narrowly linear, tapering to the base, thickish, obscurely 1-nerved ;
scales of the obovoid involucre closely imbricated in 4-5 series, rigid, lanceolate
oblong ; the outermost passing into subulate bracts; corolla somewhat
exceeding the pappus, the slender tube longer than the cyathiform 5-cleft
limb; the triangular-lanceolate appendages of the style much shorter than
the stigmatic portion.
Texas, Drummond .'—Stems rigid, 8-10 inches high; the heads nearly
sessile and somewhat aggregated at the extremity of short terete branchlets.
Leaves an inch long and a line wide, crowded. Scales of the involucre either
glutinous, or slightly pulverulent at the apex, obtusish. Stamens inserted below
the middle of the tubular part of the corolla. Ovary silky-pubescent.—
The achenia are immature.—Another species of this continent, L. Mexicana,
is figured by Schlechtendal (Hortus Halensis, t. 4.), and is remarkable for
its toothed leaves.
§ 2. Involucre several-(6-10-20-) jlowered, mostly shorter than the disk ; the
. scales oval or oblong, concave or carinate : appendages of the style tricingu-
lar or deltoid-ovate, much shorter than the flat stigmatic portion.
This division includes the Siberian L. punctata, L. villosa, (in which the heads
are only 8-10-flowered), L. Tartarica, &c.; in our specimens of the latter the heads
are only 5-7-flowered.
' 3. L. pluriflora: frutescent ? -glabrous ; branches angular; leaves very
narrowly linear, somewhat attenuate towards the base, obscurely 1-nerved;
heads 15-18-flowered, crowded and. subsessile at the summit of the small
nearly leafless.- branchlets, forming a compound fasciculate corymb; scales
of the involucre smooth and shining, oblong-lanceolate, acute, closely imbricated,
very unequal; lobes of the corolla very much shorter than the tube;
appendages óf thé style lanceolate-ovate, obtusish.—Chrysocoma graveolens,
Torr.! in ann. lyc. New Hork, 2. p. 211, not of Nutt.
Upper Missouri or Platte? Dr. James /—The lower part of the stem is
wanting in our specimen. Leaves about 2 inches long, a line wide, obscurely
impressed punctate, and a little resinous. Heads densely clustered, one-third
of an inch long. Scales of the involucre small, coriaceous, with narrow scarious
margins. Pappus copious, unequal. Alveoli of the receptacle lacerate-
dentate.
4. L. lanceolata: shrubby, cinereous-puberulent; branches terete; leaves
linear-lanceolate, mucronate, 3-nerved, with scabrous margins; heads 6-8-
flowered, in clusters, forming a compound fastigiate corymb ; scales of the
involucre oval, obtuse, or abruptly somewhat acute, loosely imbricated in 3-4
series, the innermost glabrous, nearly the length of the disk ; lobes of the corolla
about half the length of the tubular portion ; branches of the style elongated
; the appendages lanceolate, acute— Chrysothamnus lanceolatus, Nutt.!
in trans. Amer. pint. soc. [n. ser.) 7. p. 324.
Rocky Mountains, on the sources of the Platte, and of Lewis River, Nuttall.
__“ A moderate-sized shrub.” Leaves 1— inch long, 3—4 lines broad. Heads
smaller than in the preceding.
§ 3. Involucre b-flowered, mostly shorter than the disk; the concave or
carinate scales oval or oblong-linear: appendages of the style linear-subulate,
longer than the linear flat stigmatic portion.—Chrysothamnus, Nutt.
(Bigelowia § 2. Spurise, DC.)
von. ii.—30