View source for Centaurea iberica

{{Treatment/ID
|accepted_name=Centaurea iberica
|accepted_authority=Treviranus ex Sprengel
|publications={{Treatment/Publication
|title=Syst. Veg.
|place=3: 406. 1826
|year=1826
}}
|common_names=Iberian star thistle or knapweed
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Cardueae;Centaurea;Centaurea iberica
|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 iberica]]</div></div>
|volume=Volume 19
|mention_page=page 183
|treatment_page=page 192
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> biennials, or short-lived perennials, 20–200 cm. <b>Stems</b> 1–several, divaricately much branched, often forming rounded mound, puberulent to loosely tomentose. <b>Leaves</b> hispidulous to loosely tomentose, ± glabrate, minutely resin-gland-dotted; proximal leaves petiolate, blades 10–20 cm, margins 1–2 times pinnately lobed or dissected, rosette with central cluster of spines; mid sessile, not decurrent, blades ± lanceolate, shorter; distal blades linear to oblong, entire to coarsely dentate or shallowly lobed. <b>Heads</b> disciform, borne singly or in leafy cymiform arrays, sessile or short-pedunculate. <b>Involucres</b> ovoid to hemispheric, (10–)13–18 mm. <b>Principal</b> phyllaries: bodies greenish or stramineous, ovate, scarious–margined, appendages stramineous, spiny–fringed at base, each tipped by stout spreading spine (0.5–)1–3 cm. <b>Inner</b> phyllaries: appendages truncate, spineless. <b>Florets</b> many; corollas white, pink, or pale purple, those of sterile florets slender, 15–20 mm, those of fertile florets 15–20 mm. <b>Cypselae</b> white- or brown-streaked, 3–4 mm, glabrous; pappi of white bristles 1–2.5(–3) mm. <b>2n</b> = 16, 20.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer (Jun–Sep).
|habitat=Roadsides, pastures, fields
|elevation=0–1500 m
|distribution=Calif.;Kans.;Oreg.;Wash.;Wyo.;Europe;Asia.
|discussion=<p><i>Centaurea iberica</i> is native to southeastern Europe through central Asia.</p><!--
--><p>Iberian star thistle is considered to be a noxious weed in several states of the western United States. Weed control measures in Oregon and Washington have apparently eradicated the species in those states. <i>Centaurea iberica</i> is very similar to <i>C. calcitrapa</i>, from which it differs by its pappose cypselae and often more robust habit. The Kansas and Wyoming plants were originally reported as <i>C. calcitrapa</i> (R. L. McGregor 1986).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Centaurea iberica
|author=
|authority=Treviranus ex Sprengel
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Asteraceae
|phenology=Flowering summer (Jun–Sep).
|habitat=Roadsides, pastures, fields
|elevation=0–1500 m
|distribution=Calif.;Kans.;Oreg.;Wash.;Wyo.;Europe;Asia.
|introduced=true
|reference=None
|publication title=Syst. Veg.
|publication year=1826
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V19_222.xml
|tribe=Asteraceae tribe Cardueae
|genus=Centaurea
|species=Centaurea iberica
}}<!--

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