Cosmos Cavanilles (Q2582)
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Cosmos is a taxon with the rank genus within the tribe Coreopsideae
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Cosmos Cavanilles
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Cosmos is a taxon with the rank genus within the tribe Coreopsideae
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Statements
taxon/id/Cosmos Cavanilles
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Cosmos Cavanilles
Cosmos
Cavanilles
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 21: Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford University Press, New York.
accepted
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Stems usually 1, erect or ascending, branched distally or ± throughout.
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Leaves mostly cauline;
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petiolate or sessile;
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blades usually 1–3-pinnately lobed [undivided], ultimate margins usually entire, faces usually glabrous, sometimes glabrate, hispid, puberulent, or scabridulous.
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Heads radiate, borne singly or in corymbiform arrays.
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Calyculi of [5–] 8 basally connate, ± linear to subulate, herbaceous (striate) bractlets.
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Involucres hemispheric or subhemispheric [cylindric], 3–15 mm diam.
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Phyllaries persistent, [5–] 8 in ± 2 series, distinct, lanceolate, lance-oblong, lanceovate, or oblong, ± equal, membranous or herbaceous, margins ± scarious.
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Receptacles flat, paleate;
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paleae falling, linear, flat or slightly concave-convex, scarious (entire).
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Ray-florets [0, 5] 8 (more in “double” cultivars), neuter;
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corollas white to pink or purple, or yellow to red-orange.
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Disc-florets 10–20 [–80+], bisexual, fertile;
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corollas yellow [orange] (at least distally), tubes shorter than funnelform throats, lobes 5, ± deltate (staminal filaments hairy near anthers; style-branches linear, flattened, thicker distally, hirtellous, appendages relatively slender).
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Cypselae (dark-brown or black) relatively slender, quadrangular-cylindric or fusiform [outer somewhat obcompressed], sometimes slightly arcuate, attenuate-beaked, not winged [winged], faces glabrous or hispid to scabridulous or ± setose, sometimes papillate, usually with 1 groove;
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pappi persistent [falling], of 2–4 [–8] retrorsely [antrorsely] barbed awns, sometimes 0.
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branched
distally; distally; more or less throughout; throughout
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quadrangular-cylindric
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