View source for Cyperus erythrorhizos

{{Treatment/ID
|accepted_name=Cyperus erythrorhizos
|accepted_authority=Muhlenberg
|publications={{Treatment/Publication
|title=Descr. Gram.,
|place=20. 1817
|year=1817
}}
|common_names=Red-rooted flatsedge
|special_status={{Treatment/ID/Special_status
|code=W2
|label=
}}{{Treatment/ID/Special_status
|code=W1
|label=
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cyperus cupreus
|authority=J. Presl & C. Presl
|rank=species
}} {{Treatment/ID/Synonym
|name=Cyperus erythrorhizos var. cupreus
|authority=(J. Presl & C. Presl) Kükenthal
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cyperus occidentalis
|authority=Gandoger
|rank=species
}} {{Treatment/ID/Synonym
|name=Cyperus washingtonensis
|authority=
|rank=species
}}
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus erythrorhizos
|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 erythrorhizos]]</div></div>
|volume=Volume 23
|mention_page=page 147, 171, 184
|treatment_page=page 172
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual, cespitose. <b>Culms</b> trigonous to roundly trigonous, (0.5–)5–25(–105) cm × 1–2.5(–7.5) mm, glabrous. <b>Leaves</b> flat to inversely W-shaped, 5–25(–90) cm × 2–5(–11) mm. <b>Inflorescences</b>: spikes 1–3(–6), rather densely cylindric-ovoid, (4–)10–30(–45) × (6–)10–16(–23) mm; rays 2–6(–12), 1–8(–28) cm; bracts (3–)5–7(–11), horizontal to ascending at 30°, inversely W-shaped, (3–)10–20(–70) cm × 1–3(–12) mm; rachilla persistent, at maturity becoming laterally free, remaining firmly attached proximally, wings 0.3(–0.4) mm wide. <b>Spikelets</b> (20–)40–80, linear, quadrangular, 3–8(–11) × 1–1.5 mm; floral scales deciduous, 6–16(–30), appressed, laterally light brown with reddish speckles, medially greenish, laterally ribless, medially 3-ribbed, oblong-ovate to obovate, quadrangular to subterete, 1.3–1.5 × 0.8–1.2 mm, apex obtuse, mucronulate. <b>Flowers</b>: anthers 0.2–0.3 mm, connectives 0.1 mm; styles 0.7–0.8 mm; stigmas 0.4 mm. <b>Achenes</b> light grayish to brown, sessile, ovoid, (0.4–)0.7–1 × 0.4–0.6 mm, apex rounded, apiculate, surfaces glabrous.</span><!--

-->{{Treatment/Body
|phenology=Fruiting summer.
|habitat=Emergent shorelines
|elevation=0–1500 m
|distribution=Man.;Ont.;Ala.;Ariz.;Ark.;Calif.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Wash.;W.Va.;Wis.;Mexico (Baja California).
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Cyperus erythrorhizos
|authority=Muhlenberg
|rank=species
|parent rank=subgenus
|synonyms=Cyperus cupreus;Cyperus erythrorhizos var. cupreus;Cyperus occidentalis;Cyperus washingtonensis
|basionyms=
|family=Cyperaceae
|phenology=Fruiting summer.
|habitat=Emergent shorelines
|elevation=0–1500 m
|distribution=Man.;Ont.;Ala.;Ariz.;Ark.;Calif.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;Nev.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Wash.;W.Va.;Wis.;Mexico (Baja California).
|reference=None
|publication title=Descr. Gram.,
|publication year=1817
|special status=W2;W1;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V23/V23_285.xml
|genus=Cyperus
|subgenus=Cyperus subg. Cyperus
|species=Cyperus erythrorhizos
}}<!--

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