Artemisia Linnaeus (Q2037)
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Artemisia is a taxon with the rank genus within the subtribe Artemisiinae
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Artemisia Linnaeus
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Artemisia is a taxon with the rank genus within the subtribe Artemisiinae
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Statements
taxon/id/Artemisia Linnaeus
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Artemisia Linnaeus
Artemisia
Linnaeus
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
accepted
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Annuals, biennials, perennials, subshrubs, or shrubs, 3–350 cm (usually, rarely not, aromatic).
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Stems 1–10+, usually erect, usually branched, glabrous or hairy (hairs basi or medifixed).
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petiolate or sessile;
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blades filiform, linear, lanceolate, ovate, elliptic, oblong, oblanceolate, obovate, cuneate, flabellate, or spatulate, usually pinnately and/or palmately lobed, sometimes apically ± 3-lobed or toothed, or entire, faces glabrous or hairy (hairs multicelled and filled with aromatic terpenoids and/or 1-celled and hollow, dolabriform, T-shaped).
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Heads usually discoid, sometimes disciform (subradiate in A. bigelovii), in relatively broad, paniculiform arrays, or in relatively narrow, racemiform or spiciform arrays.
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Involucres campanulate, globose, ovoid, or turbinate, 1.5–8 mm diam.
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Phyllaries persistent, 2–20+ in 4–7 series, distinct, (usually green to whitish green, rarely stramineous) ovate to lanceolate, unequal, margins and apices (usually green or white, rarely dark-brown or black) ± scarious (abaxial faces glabrous or hairy).
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Receptacles flat, convex, or conic (glabrous or hairy), epaleate (except paleate in A. palmeri).
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Ray-florets 0 (peripheral pistillate florets in disciform heads usually 1–20, their corollas filiform; corollas of 1–3 pistillate florets in heads of A. bigelovii sometimes ± 2-lobed, weakly raylike).
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Disc-florets 2–20 (–30+), bisexual and fertile, or functionally staminate;
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corollas (glabrous or ± hirtellous) usually pale-yellow, rarely red, tubes ± cylindric, throats subglobose or funnelform, lobes 5, ± deltate.
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Cypselae (brown) fusiform, ribs 0 (and faces finely striate) or 2–5, faces glabrous or hairy (not villous), often gland-dotted (pericarps sometimes with myxogenic cells, without resin sacs; embryo-sac development monosporic);
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usually pinnately; pinnately; palmately
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3-lobed
sometimes apically more or less
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3-lobed
sometimes apically more or less
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