Cyperus laevigatus L.
  • Mant. Pl.


Cite taxon page as 'WFO (2020): Cyperus laevigatus L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000376262. Accessed on: 06 Jun 2020'

General Information

1. Cyperus laevigatus L., Mant. Pl. 179 (1771). Sintipo: Sudáfrica, König s.n. (LINN-70.13!).

Por C.D. Adams.

Cyperus mucronatus Rottb., Juncellus laevigatus (L.) C.B. Clarke.

Perennes. Tallos hasta c. 50 cm, próximos o remotos entre sí, brotando de un rizoma reptante cubierto de escamas, un tanto rígidos, marcadamente trígonos, lisos, estriados; vainas basales 2-3, pardo-amarillentas, terminando en un mucrón o en una lámina corta, rígida y convoluta. Brácteas 2, la inferior erecta, apareciendo como una continuación del tallo, superando a la inflorescencia, la superior mucho más corta, patente. Espiguillas 4-10 x 2 mm, 1-12 juntas en una cabezuela seudolateral densamente compacta, patentes, oblongo-lanceoladas, subagudas; raquilla recta, rígida, persistente, sin alas. Glumas 1.9-2(-2.2) x 1.7-1.8 mm, compactamente imbricadas, cimbiformes, ampliamente ovadas, obtusas, inconspicuamente mucronatas o enteras, blancas o pajizas, a veces ferrugíneo lineoladas, 3-5-nervias. Estambres 3. Estilo corto; brazos estilares 2. Aquenios 1.1-1.3(1.5) x 0.7-0.8 mm, ovados u obovados, cóncavo o plano-convexos con una superficie mirando a la raquilla, obtusos, densamente punteados, pardo-grisáceos. Playas marinas estables, planicies salinas lodosas, bordes de charcas salobres. G (Tucker, 1983: 5); N (Ramírez Goyena, 1911: 846); CR (León 204, F). 0-10 m. (SO. Estados Unidos a Mesoamérica, Perú, Bolivia, Argentina, Antillas.)

  • Provided by: [C].Flora Mesoamericana
    • Source: [
    • 1
    • ]. 

    Herbs, perennial, rhizomatous. Culms single or close together, trigonous to ± terete, (1–)8–30(–60) cm × (0.3–)0.6–1.5(–2.2) mm, glabrous. Leaves: blades present or reduced to sheaths, base of culm covered with reddish sheath 5–25 mm, distally short toothed 1–2 mm, or leaf blades involute, 1–7 cm × 0.3–1(–1.6) mm. Inflorescences: heads appearing lateral, spikes ± digitate, 5–15 × 5–15 mm; rays absent, sometimes 1, to 2 mm; bracts (1–)2(–3), longer bracts erect, appearing as continuation of culm, shorter bract(s) horizontal or ascending, longer bracts (1–)2–8(–12) cm × 0.5–3 mm, shorter (0.3–)1–4.5 cm × 0.2–1 mm. Spikelets (1–)2–7(–14), whitish green to reddish, compressed-turgid, ellipsoid to oblong-lanceoloid, 4–7(–12) × (1.6–)2–3(–3.6) mm; floral scales (8–)12–22, off-white, whitish with red speckles, or with single red spot 0.5 mm wide, medially whitish, oblong-laterally ribless or weakly 2-ribbed, medially weakly 1–3-ribbed, obovate to orbiculate, 1.5–2 × (1.3–)1.6–2 mm. Flowers: anthers (0.5–)0.7–1 mm, connective apex reddish, 0.1–0.2 mm; styles 0.8–1.2 mm; stigmas 0.7–1 mm. Achenes gray, glossy, oblong-ellipsoid to ovoid, (1.2–)1.3–1.5(–1.8) × (0.7–)0.8–1(–1.2) mm, base cuneate to stipelike, apex apiculate, surfaces finely reticulate to papillate.

  • Provided by: [G].Flora of North America @ efloras.org
    • Source: [
    • 5
    • ]. 

    Plantas perennes, con rizoma reptante; culmos hasta ca. 50 cm, trígonos, estriados. Hojas 2 ó 3, la vaina ro-jiza, mucronada (cuando no hay lámina); lámina 1–7 cm × 0.3–1(–1.6) mm, rígida, o bien ausente. Infl. unacabezuela pseudolateral, con 2 brácteas, una corta y patente y otra que aparece como una continuación delculmo; rayos ausentes; espigas laxamente subdigitadas, 0.5–1.5 × 0.5–1.5 cm. Espiguillas 4–10 × ca. 2 mm,oblongo-lanceoladas, patentes; raquilla sin alas; glumas imbricadas, cimbiformes, ovadas, obtusas, 3–5-nervadas,pajizas. Fls. con 3 estambres. Aquenios 1.1–1.3 × 0.7–0.8 mm, ovados u obovados, cóncavos o plano-convexos,con una cara hacia la raquilla, punteada, pardo grisáceo.

  • Provided by: [F].Manual de Plantas de Costa Rica
    • Source: [
    • 6
    • ]. 

    Morphology

    A creeping, rush-like sedge, varying much in size

  • Provided by: [E].Plants Of the World Online Portal - FWTA
    • Source: [
    • 2
    • ]. 

    Constantly with an erect bract and a capitate, pseudo-lateral inflorescence of sessile, white spikelets

  • Provided by: [E].Plants Of the World Online Portal - FWTA
    • Source: [
    • 2
    • ]. 

    Rhizomatous to tufted perennial, 10-60 cm. Spikelets light brown or purplish.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 7
    • ]. 

    Rhizomatous or tufted, erect perennial, 100-600 mm tall. Leaf blades very short, rigid. Stem cylindrical, 2-3 mm diam. at middle. Inflorescence appearing lateral, ± 10-20(-30) x ± 8-20(-30) mm, a digitate cluster of (1-)several spikelets, overtopped by the largest, erect, and rigid basal bract. Spikelets 2-2.5 mm wide, light brown or purplish.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 8
    • ]. 

    A tufted, perennial herb, up to 0.6 m high. Culms crowded or solitary on a long, creeping rhizome. Inflorescence a solitary spikelet or a loose to crowded head of spikelets, lateral. Glumes pale yellowish grey.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 9
    • ]. 

    Ecology

    Damp sandy places, particularly on the margins of brackish pools.

  • Provided by: [E].Plants Of the World Online Portal - FWTA
    • Source: [
    • 2
    • ]. 

    Habitat

    Damp brackish areas, sea level to 1400 m.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 7
    • ]. 

    Margins of brackish pools and dune slacks, sea level up to 1400 m.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 8
    • ]. 

    Stream and river banks, moist soil around springs, pans, dams.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 9
    • ]. 

    Dry Grassland; Dwarf Karroid Shrubland. Stream and riverbanks, moist soil around springs, pans, dams.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 11
    • ]. 

    Distribution

    Clanwilliam to Humansdorp, widespread in southern Africa and worldwide.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 7
    • ]. 

    Sperrgebiet, northern bank of lower Gariep, Richtersveld, Spoegrivier Mouth, Calvinia, Sutherland and Prince Albert Districts, widespread in southern Africa and tropical regions worldwide.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 8
    • ]. 

    Synonyms

      Bibliography

     Information From

    Cyperaceae
    • A CC0 1.0 Universal (CC0 1.0).
    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • B Missouri Botanical Garden
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • C Missouri Botanical Garden
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • D All Rights Reserved
    Plants Of the World Online Portal - FWTA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • E The Trustees of the Royal Botanic Gardens, Kew
    Manual de Plantas de Costa Rica
    http://www.tropicos.org/Project/Costa%20Rica
    Hammel, B. E.; Grayum, M. H.; Herrera, C.; Zamora, N. Manual de Plantas de Costa Rica. Missouri Botanical Garden Press, 2003-2014
    • F Missouri Botanical Garden
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • G Flora of North America Association
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).
    International Union for Conservation of Nature
    https://www.iucn.org/
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
    • I All Rights Reserved
    International Union for Conservation of Nature v.3
    https://www.iucnredlist.org/
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • J See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use