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AMMOBIÜM alatum.
Winged-stalked Ammobium.
Natural Order. Compositæ. Adanson fam. 2.103.
Sect. II. C a r d u a c b æ . Div. 5. Vernoniaceæ.
AMMOBIUM. Receptaculum paleis distinctis. Pappus;
margo dentatus. Anthera basi bisetæ. Involucrum imbrica-
íum, coloratum radians.
Herba erecta, tomentosa. Folia integerrima, radicalia lanceolata,
basi attenuata; caulina minora, decurrentia. Caulis
alatus, ramis unifloris. Involucra liemispharica laminis albis,
intimis patulis radium abbreviatum efformantibus. Corollulæ
uniformes, flava. Stigmata truncato-dilatata. Semina anci-
pitia. Receptaculum coMUÉOTJK. Brown in Botan, magaz. 2459.
Ammobium alatum. Brown loc. cit.
Stems from 18 inches to 2 feet in height, flexuose,
much branched, 4-winged ; branches corymbose, erect,
tomentose, each terminated with a single capitulum ;
wings more or less curled, or undulate. Leaves at
the root stellately spreading, oblongly lanceolate,
acute, tapering to the base, entire, tomentose ; those
on the stems short, lanceolate, taper-pointed, undulate,
broad at the base, clasping the stem, and decurrent,
or running down it in a leafy border, or wing.
Peduncle erect, also winged. Involucre many-leaved,
imbricate; sm/es white, scariose, oblong, blunt, more
or less wrinkled, radiate when the flower is expanded.
Receptacle chaffy. Chaff membranaceous, broadly
lanceolate, slightly toothed near the point, strongly
keeled at the back, mucronate. Rays none. Florets
tubular, 5-cleft, clothed here and there with small
glandular pellucid hairs. Stamens 5 ; filaments distinct;
anthers connected, but distinct at the points,
with 2 small bristle like spurs at the base of each.
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