View source for Onopordum

{{Treatment/ID
|accepted_name=Onopordum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 827. 1753
|year=1753
}}, {{Treatment/Publication
|title=Gen. Pl. ed.
|place=5, 359. 1754
|year=1754
}}
|common_names=Cotton thistle;onoporde
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Onopordum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cardueae]]</div><div class="higher-taxon"><small>genus</small>[[Onopordum]]</div></div>
|etymology=Greek onopordon, name for cotton thistle
|volume=Volume 19
|mention_page=page 57, 66, 83, 96
|treatment_page=page 87
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials,</b> 50–400+ cm, coarse, prickly. <b>Stems</b> usually erect, ± branched, spiny-winged. <b>Leaves</b> basal and cauline; winged-petiolate (basal) or sessile (cauline); blade bases narrowing, margins pinnately lobed or divided and dentate, teeth and lobes tipped with stout spines. <b>Heads</b> discoid, borne singly or in corymbiform arrays; (peduncles 0 or spiny winged). <b>Involucres</b> hemispheric to ovoid or spheric. <b>Phyllaries</b> many in 8–10+ series, linear to ovate, entire, tapered to stiff spines, middle and outer often spreading or reflexed. <b>Receptacles</b> flat to convex, epaleate, not bristly, alveolate with apically fringed pits. <b>Florets</b> many; corollas white or purple, actinomorphic or weakly zygmorphic, tubes slender, throats cylindric or narrowly goblet-shaped, lobes linear; anther bases acute-tailed, apical appendages subulate; style branches: fused portions with minutely hairy nodes, long, cylindric, minutely papillate, distinct portions minute. <b>Cypselae</b> ± cylindric, 4–5-angled, usually ± transversely roughened, glabrous, attachment scars basal; pappi falling in ring, of many barbed or plumose bristles, basally connate. <b>x</b> = 17.</span><!--

-->{{Treatment/Body
|distribution=Eurasia.
|introduced=true
|discussion=<p>Species 25–60 (3 in the flora).</p>
|tables=
|references={{Treatment/Reference
|id=dress1966a
|text=Dress, W. J. 1966. Notes on the cultivated Compositae 9. Onopordum. Baileya 14: 74–86.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Herbage green, ± sticky-glandular
|[[Onopordum tauricum|Onopordum tauricum]]
|-id=key-0-1
|1
|Herbage ± canescent-tomentose
|[[#key-0-2| > 2]]
|-id=key-0-2
|2
|Leaves dentate to shallowly pinnatifid; phyllaries linear, bases 2–2.5 mm wide.
|[[Onopordum acanthium|Onopordum acanthium]]
|-id=key-0-2
|2
|Leaves shallowly to ± deeply 1–2 pinnatifid; phyllaries lanceolate to ovate, bases 3–8 mm wide
|[[Onopordum illyricum|Onopordum illyricum]]
|}
</div></div><!--

-->{{#Taxon:
name=Onopordum
|author=David J. Keil
|authority=Linnaeus
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Asteraceae
|distribution=Eurasia.
|introduced=true
|reference=dress1966a
|publication title=Sp. Pl.;Gen. Pl. ed.
|publication year=1753;1754
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V19_34.xml
|tribe=Asteraceae tribe Cardueae
|genus=Onopordum
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae tribe Cardueae]]