View source for Cyclachaena

{{Treatment/ID
|accepted_name=Cyclachaena
|accepted_authority=Fresenius
|publications={{Treatment/Publication
|title=Index Seminum (Frankfurt)
|place=1836: 4. 1838
|year=1838
}}
|basionyms=
|synonyms=
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Ambrosiinae;Cyclachaena
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Ambrosiinae]]</div><div class="higher-taxon"><small>genus</small>[[Cyclachaena]]</div></div>
|etymology=Greek cyclo -, circular, and Latin achenium, achene; allusion uncertain, perhaps to the ring of cypselae in each fruiting head
|volume=Volume 21
|mention_page=page 9, 25
|treatment_page=page 28
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals,</b> 30–120(–200) cm. <b>Stems</b> erect, strictly, if at all, branched. <b>Leaves</b> cauline; mostly opposite (distal sometimes alternate); petiolate; blades (3–5-nerved) ± deltate, ovate, or rhombic (proximal 1–3 pairs, often 3–5-lobed), margins usually toothed, faces densely to sparsely scabrellous to strigillose (abaxial often canescent), both usually gland-dotted. <b>Heads</b> ± disciform, in (± ebracteate) paniculiform arrays. <b>Involucres</b> turbinate to hemispheric, 3–5+ mm diam. <b>Phyllaries</b> persistent, 10–12+ in 2+ series, distinct, outer 5 herbaceous, inner scarious to membranous. <b>Receptacles</b> convex to conic; paleae spatulate to linear, ± membranous, sometimes 0. <b>Pistillate</b> florets 5; corollas whitish, tubular, or 0. <b>Functionally</b> staminate florets 5–10(–20+); corollas whitish, funnelform, lobes 5, erect (filaments connate, anthers distinct). <b>Cypselae</b> plumply obovoid to obcompressed, finely striate, sparsely strigillose or hispidulous distally, little, if at all, gland-dotted; pappi 0. <b>x</b> = 18.</span><!--

-->{{Treatment/Body
|distribution=North America;introduced in Europe.
|discussion=<p>Species 1.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Cyclachaena
|author=John L. Strother
|authority=Fresenius
|rank=genus
|parent rank=subtribe
|synonyms=
|basionyms=
|family=Asteraceae
|illustrator=Marjorie C. Leggitt
|distribution=North America;introduced in Europe.
|reference=None
|publication title=Index Seminum (Frankfurt)
|publication year=1838
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_49.xml
|tribe=Asteraceae tribe Heliantheae
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ambrosiinae
|genus=Cyclachaena
}}<!--

-->[[Category:Treatment]][[Category:Asteraceae (tribe Heliantheae) subtribe Ambrosiinae]]