View source for Cyperus aggregatus

{{Treatment/ID
|accepted_name=Cyperus aggregatus
|accepted_authority=(Willdenow) Endlicher
|publications={{Treatment/Publication
|title=Cat. Horti Vindob.
|place=1: 93. 1842
|year=1842
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Mariscus aggregatus
|authority=Willdenow
|rank=species
|publication_title=Enum. Pl.
|publication_place=1: 70. 1809
}} {{Treatment/ID/Basionym
|name=Cyperus cayennensis
|authority=(Lamarck) Britton
|rank=species
|publication_title=
|publication_place=1907
}} {{Treatment/ID/Basionym
|name=Cyperus flavus
|authority=(Vahl) Nees
|rank=species
|publication_title=
|publication_place=1847
}}
|synonyms={{Treatment/ID/Synonym
|name=Cyperus flavus var. aggregatus
|authority=(Willdenow) Kükenthal
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cyperus flavus var. laevis
|authority=Kükenthal
|rank=variety
}} {{Treatment/ID/Synonym
|name=Kyllinga cayennensis
|authority=Baldwin
|rank=species
}} {{Treatment/ID/Synonym
|name=Kyllinga squarrosa
|authority=Vahl
|rank=species
}} {{Treatment/ID/Synonym
|name=Mariscus flavus
|authority=Kunth
|rank=species
}} {{Treatment/ID/Synonym
|name=Mariscus laevis
|authority=
|rank=species
}}
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus aggregatus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cyperus]]</div><div class="higher-taxon"><small>subgenus</small>[[Cyperus subg. Cyperus]]</div><div class="higher-taxon"><small>species</small>[[Cyperus aggregatus]]</div></div>
|volume=Volume 23
|mention_page=page 188
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, cespitose, rhizomatous. <b>Culms</b> trigonous, 20–100 cm × 0.8–2.5 mm, glabrous. <b>Leaves</b> 5–10, V-shaped to flanged V-shaped, 10–70(–90) cm × 2–7 mm, margins and midribs scabridulous or glabrous. <b>Inflorescences</b>: spikes 1(–6), densely cylindric, 6–30 × 5–11 mm; rays 3–12, 0.4–5(–7) cm; rays and rachis glabrous; usually only 1–2 spikes of inflorescence on elongate rays, other spikes sessile or nearly so; bracts 4–7, horizontal to slightly ascending, 1–16 cm × 0.5–4 mm; rachilla deciduous, wings persistent, 0.5 mm wide. <b>Spikelets</b> 20–80, ellipsoid, roughly quadrangular, 3–5 × 1–1.4 mm; floral scales 1–2(–4), appressed, stramineous to golden brown, often red-speckled, medially greenish, 9-ribbed, elliptic to ovate, 2.4–3.4 × 1.8–2.6 mm, apex obtuse. <b>Flowers</b>: anthers 0.4–0.6 mm; styles 0.7–1.1 mm; stigmas 1.4–2.1 mm. <b>Achenes</b> dark brown to reddish brown, sessile, broadly ellipsoid, 1.8–2.1 × 0.8–1 mm, apex apiculate, surfaces glabrous to finely puncticulate.</span><!--

-->{{Treatment/Body
|phenology=Fruiting mid summer–fall (Jul–Oct).
|habitat=Dry roadsides, pastures, thickets
|elevation=0–500 m
|distribution=Ariz.;La.;Miss.;N.J.;N.Mex.;Oreg.;Pa.;Tex.;Mexico;Central America;South America;Australia.
|introduced=true
|discussion=<p>The records of <i>Cyperus aggregatus</i> in New Jersey, Oregon, and Pennsylvania represent introductions from ballast.</p><!--
--><p>The closely related Mexican and Central American <i>Cyperus</i> regiomontanus Britton has been collected once as an adventive or waif in southern California. It is distinguished from <i>C. aggregatus</i> by its silvery green, subulate-lanceolate spikelets and achenes that are only 0.4–0.6 mm wide.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Cyperus aggregatus
|authority=(Willdenow) Endlicher
|rank=species
|parent rank=subgenus
|synonyms=Cyperus flavus var. aggregatus;Cyperus flavus var. laevis;Kyllinga cayennensis;Kyllinga squarrosa;Mariscus flavus;Mariscus laevis
|basionyms=Mariscus aggregatus;Cyperus cayennensis;Cyperus flavus
|family=Cyperaceae
|phenology=Fruiting mid summer–fall (Jul–Oct).
|habitat=Dry roadsides, pastures, thickets
|elevation=0–500 m
|distribution=Ariz.;La.;Miss.;N.J.;N.Mex.;Oreg.;Pa.;Tex.;Mexico;Central America;South America;Australia.
|introduced=true
|reference=None
|publication title=Cat. Horti Vindob.
|publication year=1842
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_325.xml
|genus=Cyperus
|subgenus=Cyperus subg. Cyperus
|species=Cyperus aggregatus
}}<!--

-->[[Category:Treatment]][[Category:Cyperus subg. Cyperus]]