Arnica Linnaeus (Q2823)
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Arnica is a taxon with the rank genus within the tribe Madieae
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Arnica Linnaeus
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Arnica is a taxon with the rank genus within the tribe Madieae
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Statements
taxon/id/Arnica Linnaeus
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Arnica Linnaeus
Arnica
Linnaeus
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 erect, simple or branched.
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petiolate or sessile;
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blades mostly cordate, deltate, elliptic, lanceolate, linear, oblanceolate, oblong, obovate, ovate, or spatulate, margins entire or toothed (usually dentate, denticulate, or serrate, sometimes crenate or slightly lobed), faces glabrous, hirsute, hispidulous, pilose, puberulent, scabrous, tomentose, villous, or woolly, often stipitate-glandular as well.
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Heads radiate or discoid, borne singly or in cymiform or corymbiform arrays.
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Involucres campanulate, hemispheric, or turbinate, mostly 6–20+ mm diam.
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Phyllaries persistent, 5–23 in (1–) 2 series.
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Receptacles convex, smooth or pitted, epaleate.
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Ray-florets 0, or 5–22, pistillate, fertile;
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corollas yellow to orange.
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Disc-florets 10–120, usually bisexual and fertile (functionally staminate in A. dealbata);
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corollas usually yellow, rarely cream, tubes shorter than funnelform throats, lobes 5, ± deltate (anthers usually yellow, purple in A. lessingii and A. unalaschcensis).
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Cypselae (gray or brown to black) ± conic, fusiform, or obovoid-cylindric, nerves 5–10 (–20), faces hairy, glandular, or glabrous;
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pappi usually persistent, of 10–50 white or stramineous to tawny, fine, barbellate or subplumose to plumose bristles (0 in A. dealbata).
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stipitate-glandular
often; well
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in cymiform or corymbiform arrays
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