Artemisia spp.
Family: Asteraceae
Artemisia image
Max Licher  
Annuals, biennials, perennials, subshrubs, or shrubs, 3-350 cm (usually, rarely not, aromatic). Stems 1-10+, usually erect, usually branched, glabrous or hairy (hairs basi- or medifixed). Leaves basal or basal and cauline; alternate; petiolate or sessile; 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). Heads usually discoid, sometimes disciform (subradiate in A. bigelovii), in relatively broad, paniculiform arrays, or in relatively narrow, racemiform or spiciform arrays. Involucres campanulate, globose, ovoid, or turbinate, 1.5-8 mm diam. 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). Receptacles flat, convex, or conic (glabrous or hairy), epaleate (except paleate in A. palmeri). 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). Disc florets 2-20(-30+), bisexual and fertile, or functionally staminate; corollas (glabrous or ± hirtellous) usually pale yellow, rarely red, tubes ± cylindric, throats subglobose or funnelform, lobes 5, ± deltate. 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); pappi usually 0 (coroniform in A. californica and A. papposa, sometimes on outer in A. rothrockii). x = 9.
Image of Artemisia alba
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Image of Artemisia albicerata
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Image of Artemisia aleutica
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Artemisia
Image of Artemisia arborescens
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Image of Artemisia argophylla
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Image of Artemisia armeniaca
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Image of Artemisia aromatica
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Artemisia
Image of Artemisia austriaca
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Image of Artemisia brittonii
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Image of Artemisia canadensis
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Artemisia
Image of Artemisia chamaemelifolia
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Image of Artemisia coloradensis
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Image of Artemisia commutata
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Image of Artemisia cuneata
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Image of Artemisia discolor
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Artemisia
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Image of Artemisia flava
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Image of Artemisia furcata
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Image of Artemisia glacialis
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Image of Artemisia gmelinii
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Image of Artemisia gnaphaloides
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Image of Artemisia gracilescens
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Image of Artemisia gracillima
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Artemisia
Image of Artemisia hillebrandii
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Artemisia
Image of Artemisia indica
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Image of Artemisia jacutica
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Image of Artemisia krushiana
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Image of Artemisia laciniatiformis
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Image of Artemisia lagocephala
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Image of Artemisia lercheana
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Image of Artemisia marschalliana
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Image of Artemisia microcephala
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Image of Artemisia mongolica
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Image of Artemisia parishii
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Image of Artemisia pattersoni
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Artemisia
Image of Artemisia petrophila
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Image of Artemisia porrecta
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Image of Artemisia potentilloides
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Image of Artemisia procera
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Image of Artemisia revoluta
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Image of Artemisia rhodantha
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Image of Artemisia richardsoniana
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Image of Artemisia rubripes
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Image of Artemisia rupestris
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Artemisia
Image of Artemisia sacrorum
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Image of Artemisia schmidtiana
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Image of Artemisia senjavinensis
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Image of Artemisia sericea
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Image of Artemisia sieversiana
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Image of Artemisia silvicola
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Image of Artemisia tanacetifolia
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Image of Artemisia taurica
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Image of Artemisia tenuis
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Image of Artemisia trifida
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Image of Artemisia trifurcata
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Image of Artemisia underwoodii
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Image of Artemisia vallesiaca
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Image of Artemisia wrightii
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