View source for Centaurea sulphurea

{{Treatment/ID
|accepted_name=Centaurea sulphurea
|accepted_authority=Willdenow
|publications={{Treatment/Publication
|title=Enum. Pl.,
|place=930. 1809
|year=1809
}}
|common_names=Sicilian star-thistle;sulphur-colored Sicilian thistle;sulphur knapweed
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Centaurea;Centaurea sulphurea
|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>[[Centaurea]]</div><div class="higher-taxon"><small>species</small>[[Centaurea sulphurea]]</div></div>
|volume=Volume 19
|mention_page=page 182, 183
|treatment_page=page 194
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 10–100 cm. <b>Stems</b> simple to openly branched, branches ascending, villous to hispid with septate hairs and loosely tomentose. <b>Leaves</b> ± villous to hispid with septate hairs, minutely resin-gland- dotted; basal winged-petiolate, blades oblong to oblanceolate, 10–15 cm, margins pinnately lobed, lobes acute, finely dentate; cauline sessile, long-decurrent with narrow wings, linear-oblong to oblanceolate, 1–6 cm, entire or distally serrate with short, spine-tipped teeth. <b>Heads</b> disciform, borne singly or in open, few-headed corymbiform arrays, long-pedunculate. <b>Involucres</b> ovoid, 12–30 mm, distally constricted. <b>Principal</b> phyllaries: bodies greenish or stramineous, ovate to elliptic, glabrous, appendages spreading to reflexed, brown to blackish purple, each with palmately radiating cluster of spines, central spine stout, 1–2.5 cm, base dark brown to black, distally stramineous. <b>Inner</b> phyllaries: appendages acute or spine-tipped. <b>Florets</b> many; corollas yellow, all ± equal, 25–35 mm; corollas of sterile florets slender, inconspicuous. <b>Cypselae</b> dark brown, 5–8 mm, glabrous; pappi of many, brown to blackish, unequal bristles 6–7 mm. <b>2n</b> = 24.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer (May–Jul).
|habitat=Disturbed sites, grasslands, woodlands, pastures, roadsides
|elevation=0–300 m
|distribution=Calif.;sw Europe.
|discussion=<p><i>Centaurea sulphurea</i> is considered to be a noxious weed by the state of California.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Centaurea sulphurea
|authority=Willdenow
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering spring–summer (May–Jul).
|habitat=Disturbed sites, grasslands, woodlands, pastures, roadsides
|elevation=0–300 m
|distribution=Calif.;sw Europe.
|reference=None
|publication title=Enum. Pl.,
|publication year=1809
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V19_227.xml
|tribe=Asteraceae tribe Cardueae
|genus=Centaurea
|species=Centaurea sulphurea
}}<!--

-->[[Category:Treatment]][[Category:Centaurea]]