portion. Achenia oblong-cylindrical, slightly compressed, destitute of pappus.—
Suffruticose and fastigiately branched (American) plants, glabrous,
mostly glutinous or varnished, with the habit of Solidago § Euthamia.
Leaves alternate or sometimes opposite, oblong or linear, sessile, entire, punctate.
Heads small, ternate or aggregated at the summit of the branchlets,
usually corymbose-fastigiate. Flowers yellow.
1. G. corymbosum (DC.) : shrubby; branchlets somewhat angled, dichotomous
corymbose ; leaves alternate, oblong [or linear-lanceolate], tapering to
each end, somewhat viscid, 3-nerved, the iateral nerves slender; heads aggregated
three together at the summit of the branchlets, 8-flowered ; the ray-
flowers 5, those of the disk about 3. DC.! prodr. 5. p. 312.
Texas, Dr. Riddell!—Ligules not half the length of the tube. Achenia
minutely puberulent.—De Candolle describes the leaved as oblong, but mentions
at the same time their length as 12 to 15 lines, and their breadth 2 lines!
Subdiv. 2. A c h y s i b e i ;, DC.-—Pappus composed of several persistent chaffy
scales, or short and. coroniform, sometimes nearly obsolete in tire ray.
36. AMPHIACHYRIS. DC., (§ of Brachyris) notic. 7. pi. rar. Genev. p .
1,2.1, prodr. 5. p . 313; Nutt, in trans. Amer. phil. soc. (n. ser.) 7. p. 313.
Heads many-(20-40-) flowered ; the ray-flowers (8—10) ligulate, pistillate,
fertile, in a single series; those of the disk staminate and'pistillate, but by the
abortion of the ovary infertile. . Involucre obovoid, shining as if varnished ;
the scales 10-12, rigid, appressed, imbricated, often bracteolate at the base,
coriaceous, the summit abruptly somewhat foliaceous, mostly obtuse. Receptacle
alveolate. Corolla of the ray oblong, with a very short tube; of the
disk much smaller, infundibuliform, 5-toothed. Branches of the style (in the
disk-flowers) oblong-linear, rather acute, papillose-hispid quite to the base.
Achenia of the ray oblong or obconie, somewhat terete, with a minute coroniform
or nearly obsolete pappus ; of the disk none or a mere rudiment; the
pappus of 5-8 scarious very narrowly linear scales, slightly dilated towards
the summit, about the length of the corolla, united at the base into a campan-
ulate tube.—A perennial (or possibly sometimes annual) herb, or suffrutes-
cent glabrous plant, fastigiately much branched (in the manner of Solidago
§ Euthamia, with the involucre much as in Sericocarpus); with lanceolate or
narrowly linear and entire sessile (1-3-nerved) impressed-punctate leaves,
the margins scabrous. Heads terminating the numerous branchlets. Flow,-
ers deep yellow.
A . dracunculoides (D C .! 1. c.)—Nutt.! in trans. Amer. phil. soc. 1. c.
Brachyris ramosissima, Hook.! ic. pl. t. 142 ; DC. prodr. 7. p. 278.
Western Arkansas, Nuttall! Pour tales ! Texas, Drummond! Sept.-
Oct.—Stem 1-3 feet high; the branchlets angled. Leaves 1-2 inches long;
the lower often 3-4 lines wide ; or all narrow and only 1-2 lines in width
(var. angustissima, DC. ) ; the lower obscurely 3-nerved; Peduncles more
or less bracteolate. Achenia clothed with a very minute appressed pubescence.—
We have not observed so manifesto pappus in the ray as is represented
in Hooker’s figure; nor do we find more than the slightest rudiment
of an ovary in the disk-flowers.
37. GUTIERREZIA. Lagasca, nov. gen. Sfspec. (1816) p. 30; Don,
and Hook. 8f Arn. in compan. to hot. mag. 2. p . 51.
Brachyris, Nutt. (1818)—Brachyris § 1. (excl. no. 6.) & Hemiachyris, DC.
Heads 8-40-flowered; the ray-flowers ligulate, pistillate, fertile, in a single
series ; those of the disk tubular, perfect and fertile. Involucre campanulate
or turbinate ; the scales appressed and closely imbricated, rigid, with somewhat
foliaceous greenish tips. Receptacle naked. Corolla of the ray oblong
or oval, with a short tube ; of the disk infundibuliform, 5-toothed ; the teeth
short, recurved. Branches of the style in the disk-flowers linear, elongated,
obtuse, hairy down to the very short stigmatic lines at the base ; in the ray
glabrous, the stigmatic lines extending to the summit. Achenia somewhat
obconic and terete, pubescent or silky. Pappus of several linear or oblong
chaffy scales, mostly in a double series, persistent; that of the ray sometimes
obsolete or wanting.—Perennial or suffruticose plants (natives of the region
beyond the Mississippi,'and of Mexico and South America to the extremity of
the continent), glabrous, somewhat glutinous and balsamic, with linear or
lanceolate entire mostly impressed-punctate alternate leaves. Heads solitary,
or aggregated (about 3 together) at the summit of the corymbose or paniculate
branchlets. Flowers yellow.
§ 1. Pappus as long as the achenium, more or less distinctly in a double series
; that of the ray similar to the disk, or often shorter.—Gu t ie r r e z ia ,
Lag. (Brachyris, Nutt.)
1. G. Californica: stem terete, somewhat paniculate at the summit;
leaves linear, acute, attenuate at the base, scabrous, slightly ciliate, strongly
1-nerved ; heads few, sometimes glomerate, turbinate or obovate; flowers of
the disk and ray each 8-10 ; pappus of mostly 9 narrowly linear rather acute
chaffy scales, in the disk longer than the achenium.—Brachyris Californica,
DC.! prodr, 5. p. 313; Hook. A m .! bol. Beechey, suppl. p. 351.
California, Douglas !—Stem a foot high. Limb of the ligulate corolla
broadly oval. Achenia silky. Pappus manifestly in a double series.; that
of the ray shorter.—Hooker & Arnott consider this species not only identical
with the following, but also probably the same as G. linearifolia, Lag. In
G. Euthamiae, however, the scales of the pappus are shorter and broader,
the achenia less hairy, &c.; yet all these species are too closely allied.
2. G. Euthamice: stems woody and much branched at the base, angled ;
leaves crowded, narrowly linear, acute, attenuate at the base, 1-nerved,
slightly scabrous; corymb compound, fastigiate, contracted ; the heads
mostly glomerate, turbinate-cylindrical; flowers of the ray and disk each
about 5 ; pappus mostly of 9 oblong-linear obtuse chaffy scales, about the
length of the achenium.—Brachyris Euthamite, Nutt. | gen. 2. p. 163 ; Hook.!
Jl. Bor.-Am. 2. p. 23; DC. 1. c. Brachyachyris Euthamice, Spreng, syst.
3. p. 574. Solidago Sarothras, Pursh, Jl. 2. p. 540.
Arid hills of the Upper Missouri, &c., Lewis, Nuttall / to the Saskatcba-
wan, Drummond! “Douglas!—Stems numerous, 6-12 inches high. Ligulate
flowers spreading; the limb broadly oval. Pappus in a double series; that
of the ray mostly a little shorter, but otherwise similar,
von. n.—25