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This species is accepted, and its native range is Mexico to Tropical America. It is has environmental uses.
Cyperus laxus

[UPB]

The Useful Plants of Boyacá project

Ecology
Alt. 0 - 2200 m.
Morphology General Habit
Herb.
Distribution
Native from Colombia.

[FTEA]

Cyperaceae, K Hoenselaar, B. Verdcourt & H. Beentje. Hypolytrum, D Simpson. Fuirena, M Muasya. Flora of Tropical East Africa. 2010

Morphology Reproductive morphology Inflorescences Bracts
Involucral bracts leaf-like, erect or spreading, much overtopping the inflorescence, 5–8, lowermost 15.5–31 cm long
Morphology Reproductive morphology Inflorescences
Inflorescence simple to compound, primary branches 6–10, 2–7 cm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets in small digitate clusters at the end of primary, secondary and sometimes tertiary branches, 3–5 per cluster, 4–6 mm long, 1.6–2.4 mm wide.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes pale reddish-brown, ovate, 1.1–3 mm long, 0.6–1.6 mm wide, keel green, excurrent, apex mucronate, slightly recurved
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3.
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Filaments 1.3–1.9 mm long
Morphology Reproductive morphology Fruits
Nutlet reddish brown to black, ovoid to obovoid, 1.1–1.4 mm long, 0.6–1.1 mm wide, almost smooth to minutely papillose to minutely irregularly pitted.
Note
During examination of the specimens an obvious difference between specimens from Uganda and Kenya and specimens of Tanzania was observed. The latter show a much coarser habit, with wider leaves, a larger inflorescence and larger glumes. Lye described the subspecies buchholzii (Boeck) Lye and sylvestris (Ridl.) Lye in 1983, but both subspecies were put into synonymy later. After carefully examining the protologues of both subspecies, and comparing them to the studied material I feel strongly the subspecies should be recognized for the Flora area as the differences are considerable and the distribution is disjunct.
Type
Type: Brazil, E Cayenne, no collector indicated (BM, herb. Sloane, holo.)
Morphology General Habit
Perennial up to 124 cm tall, with short woody rhizome.
Morphology Culms
Culms tufted, 28–113 cm long, 1.1–4 mm wide, trigonous to triquetrous, smooth
Morphology Leaves
Leaf blade linear, flat, 25–53 cm long, 0.3–1.3 cm wide, scabrid on margins and veins, apex acuminate to acute, with 2 main veins next to primary vein Leaf sheath reddish-brown to purple, 4–9 cm long. Leaves up to 60 cm long.

[CPLC]

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution
Nativa en Colombia; Alt. 0 - 2200 m.; Amazonia, Andes, Guayana y Serranía de La Macarena, Llanura del Caribe, Orinoquia, Pacífico, Sierra Nevada de Santa Marta, Valle del Cauca, Valle del Magdalena.
Morphology General Habit
Hierba
Conservation
Preocupación Menor

[UNAL]

Bernal, R., G. Galeano, A. Rodríguez, H. Sarmiento y M. Gutiérrez. 2017. Nombres Comunes de las Plantas de Colombia. http://www.biovirtual.unal.edu.co/nombrescomunes/

Vernacular
chundul, coquito, cortadera, macano, paja cortadera

[UPB]
Use Environmental
Environmental uses (State of the World's Plants 2016).

Native to:

Argentina Northeast, Argentina Northwest, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Cuba, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Jamaica, Mexico Central, Mexico Gulf, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Paraguay, Peru, Suriname, Trinidad-Tobago, Venezuela, Venezuelan Antilles, Windward Is.

Introduced into:

Andaman Is., Assam, Bangladesh, Cambodia, Nicobar Is.

Cyperus laxus Lam. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Oct 1, 2003 Gardner, G. [s.n.], Pernambuco K000188780
Oct 1, 2003 Mori, S.A. [10539], Bahia K000188778
Oct 1, 2003 Santos, F.S. [389], Bahia K000188777
Oct 1, 2003 Noblick, L.R. [2699], Bahia K000188775
Oct 1, 2003 Noblick, L.R. [1805], Bahia K000188774
Oct 1, 2003 Salzmann, P. [s.n.], Bahia K000188779 isolectotype
Oct 1, 2003 Pernambuco K000188772
Khayota, B. [553], Cameroon K000518937
Groves, M. [217], Cameroon K000518932

First published in Tabl. Encycl. 1: 146 (1791)

Accepted by

  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Espejo Serna, A. & López-Ferrari, A.R. (1997). Las Monocotiledóneas Mexicanas una Sinopsis Florística 5: 1-98. Consejo Nacional de la Flora de México, México D.F.
  • Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • Hammel, B.E. & al. (2003). Manual de Plantas de Costa Rica 2: 1-694. Missouri Botanical Garden Press, St. Louis.
  • Hoenselaar, K., Verdcourt, B. & Beentje, H. (2010). Cyperaceae Flora of Tropical East Africa: 1-466.
  • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
  • Idárraga-Piedrahita, A., Ortiz, R.D.C., Callejas Posada, R. & Merello, M. (eds.) (2011). Flora de Antioquia: Catálogo de las Plantas Vasculares 2: 1-939. Universidad de Antioquia, Medellín.
  • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
  • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
  • Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India Journal of Economic and Taxonomic Botany 32: 403-500.
  • Sarmah, K.K. & Borthakur, S.K. (2009). A checklist of angiospermic plants of Manas national park in Assam, India Pleione 3: 190-200.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.

Literature

Catálogo de Plantas y Líquenes de Colombia

  • ColPlantA (2021). "ColPlantA. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://www.colplanta.org/"

Useful Plants of Boyacá Project

  • GRIN National Genetic Resources Program http://www.ars-grin.gov in The State of the World’s Plants Report–2016. (2016). Royal Botanic Gardens, Kew https://stateoftheworldsplants.org/2016/

Kew Backbone Distributions

  • Chou, S., Chhnang, P. & Kim, Y. (2016). A Checklist for the Seed Plants of Cambodia: 1-272. National Institute of Biological Resources, Korea.
  • Espejo Serna, A. & López-Ferrari, A.R. (1997). Las Monocotiledóneas Mexicanas una Sinopsis Florística 5: 1-98. Consejo Nacional de la Flora de México, México D.F.
  • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
  • Mostaph, M.K. & Uddin, S.B. (2013). Dictionary of plant names of Bangladesh, Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh.
  • Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India Journal of Economic and Taxonomic Botany 32: 403-500.
  • Sarmah, K.K. & Borthakur, S.K. (2009). A checklist of angiospermic plants of Manas national park in Assam, India Pleione 3: 190-200.

Flora of Tropical East Africa

  • Haines & Lye, Sedges & Rushes E. Afr.: 163 (1983).
  • Tabl. Encycl. 1: 146 (1791)

Catálogo de Plantas y Líquenes de Colombia
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Science Photographs
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Universidad Nacional de Colombia
ColPlantA database
http://creativecommons.org/licenses/by-nc-sa/3.0

Useful Plants of Boyacá Project
ColPlantA database
http://creativecommons.org/licenses/by-nc-sa/3.0