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Helichrysum
Family: Asteraceae
Helichrysum image
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Guy L. Nesom in Flora of North America (vol. 19, 20 and 21)
[Annuals, biennials, perennials,] subshrubs, or shrubs (often aromatic), mostly 20-80 cm; taprooted. Stems usually 1, usually erect, sometimes decumbent to procumbent (± woolly-tomentose, usually stipitate- or sessile-glandular as well). Leaves cauline; alternate; petiolate [sessile]; blades ovate [spatulate to lanceolate or linear], bases cuneate to truncate [usually clasping and/or decurrent], margins entire (sometimes revolute), faces concolor [bicolor], usually gray to white and tomentose or sericeous [adaxial sometimes greenish and glabrescent], sometimes stipitate- or sessile-glandular as well. Heads disciform or discoid, in glomerules in corymbiform arrays. Involucres campanulate, 4-8 mm. Phyllaries in 3-5[-7] series, whitish [stramineous, orange, reddish, or pinkish] (opaque or hyaline, usually shiny; stereomes green, usually sessile-glandular distally). Receptacles flat, glabrous, epaleate. Peripheral (pistillate) florets 0 or 1-2 (fewer than bisexual): corollas yellowish. Inner (bisexual) florets 3-30[-50+]; corollas usually yellowish. Cypselae ± columnar, faces usually smooth, sometimes papillate (roughened by raised, imbricate tips of epidermal cells), sometimes with 4-6 longitudinal ridges, glabrous [± strigose or myxogenic, papilliform hairs]; pappi readily falling, of 12-20 distinct or loosely coherent basally, barbellate [subplumose] bristles in 1 series. x = 7.
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Helichrysum abbayesii
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Helichrysum abietinum
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Helichrysum acutatum
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Helichrysum adenocarpum
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Helichrysum adscendens
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Helichrysum albiflorum
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Helichrysum albo-brunneum
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Helichrysum allioides
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Helichrysum amblyphyllum
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Helichrysum angustifolium
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Helichrysum angustifrondeum
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Helichrysum anomalum
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Helichrysum appendiculatum
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Helichrysum arenarium
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Helichrysum argyranthum
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Helichrysum argyrophyllum
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Helichrysum armenium
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Helichrysum asperum
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Helichrysum aureonitens
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Helichrysum aureum
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Helichrysum bellidiastrum
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Helichrysum bellum
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Helichrysum benthamii
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Helichrysum bracteatum
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Helichrysum bracteiferum
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Helichrysum brownei
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Helichrysum buchananii
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Helichrysum buddleioides
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Helichrysum cephaloideum
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Helichrysum chilense
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Helichrysum chionoides
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Helichrysum chionosphaerum
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Helichrysum citrispinum
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Helichrysum collinum
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Helichrysum cooperi
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Helichrysum cordifolium
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Helichrysum coriaceum
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Helichrysum cryptomerioides
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Helichrysum dunense
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Helichrysum elephantinum
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Helichrysum ellipticifolium
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Helichrysum errerae
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Helichrysum faradifani
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Helichrysum felinum
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Helichrysum flagellare
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Helichrysum flanaganii
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Helichrysum foetidum
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Helichrysum formosissimum
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Helichrysum forskahlii
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Helichrysum forsythii
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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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