Difference between revisions of "Cyperus articulatus"
Sp. Pl. 1: 44. 1753.
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|name=Cyperus articulatus var. multiflorus | |name=Cyperus articulatus var. multiflorus | ||
|authority=Kükenthal | |authority=Kükenthal | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Cyperus articulatus var. nodosus | |name=Cyperus articulatus var. nodosus | ||
|authority=(Willdenow) Kükenthal | |authority=(Willdenow) Kükenthal | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Cyperus corymbosus var. subnodosus | |name=Cyperus corymbosus var. subnodosus | ||
|authority=(Nees & Meyen) Kükenthal | |authority=(Nees & Meyen) Kükenthal | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Cyperus nodosus | |name=Cyperus nodosus | ||
|authority=unknown | |authority=unknown | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Cyperus nodosus var. subnodosus | |name=Cyperus nodosus var. subnodosus | ||
|authority=(Nees & Meyen) Boeckeler | |authority=(Nees & Meyen) Boeckeler | ||
− | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Cyperus subnodosus | |name=Cyperus subnodosus | ||
|authority=unknown | |authority=unknown | ||
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|elevation=0–100 m | |elevation=0–100 m | ||
|distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.;Tex.;Mexico;Central America;South America;Asia;Africa. | |distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.;Tex.;Mexico;Central America;South America;Asia;Africa. | ||
− | |discussion=<p>In habit, Cyperus articulatus is reminscent of larger plants of Juncus or Schoenoplectus and is the only North American Cyperus with such a reedlike appearance.</p> | + | |discussion=<p>In habit, <i>Cyperus articulatus</i> is reminscent of larger plants of <i>Juncus</i> or <i>Schoenoplectus</i> and is the only North American <i>Cyperus</i> with such a reedlike appearance.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1753 | |publication year=1753 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V23/V23_272.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Cyperus | |subgenus=Cyperus subg. Cyperus |
Revision as of 17:06, 18 September 2019
Herbs perennial; rhizomes to 200 cm. Culms to 25 cm apart, 1(–3) together, terete (scarcely compressed in drying), occasionally trigonous for apical 1/3, 40–140(–200) cm, 4–12 mm thick at base, (1.2–)1.5–2.5 mm thick at apex (with conspicuous transverse septa ca. 3 cm apart basally, to 3–5 mm apart apically), glabrous or infrequently scabrid on angles apically; sheaths at base of culm, 2–3, (5–)10–25 cm, loose, papery. Leaves usually bladeless, blades when present, cross ribs prominent, especially adaxially, (1–)10–20(–40) cm × 4–6(–9) mm. Inflorescences: spikes 1(–5), broadly ovoid to ± umbellate, 15–45 × 10–30 mm; rays 5–7(–10), 0.3–8(–12) cm; 2d order rays occasionally present, 5–20 mm; bracts 2(–4), erect, longest appearing to be continuation of culm, deltate to lance-linear, 0.2–2(–9) cm × 1.5–4.5 mm; rachilla persistent, wings translucent, whitish, or stramineous, 0.4 mm wide. Spikelets (1–)5–10, linear, compressed, 10–35(–45) × 1.1–2 mm; floral scales deciduous, 15–45, spreading or appressed, laterally light brown, medially green to brown, laterally 1–2-ribbed, medially 3-ribbed, oblong-elliptic to ovate, 2.9–3.7 × 1.1–1.6(–1.8) mm, apex acute. Flowers: anthers 1.7–2.4 mm; styles 1.2–3.6 mm; stigmas 1.7–6 mm. Achenes brown, stipitate, obovoid-ellipsoid, 1.2–1.6 × 0.4–0.6 mm, stipe 0.1 mm, apex markedly apiculate, surfaces puncticulate.
Phenology: Fruiting summer.
Habitat: Marshes, shallow water, ditches
Elevation: 0–100 m
Distribution
![V23 272-distribution-map.jpg](/w/images/4/4d/V23_272-distribution-map.jpg)
Ala., Fla., Ga., La., Miss., S.C., Tex., Mexico, Central America, South America, Asia, Africa.
Discussion
In habit, Cyperus articulatus is reminscent of larger plants of Juncus or Schoenoplectus and is the only North American Cyperus with such a reedlike appearance.
Selected References
None.