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This species is accepted, and its native range is Tropical & Subtropical America, Tropical & S. Africa to Sri Lanka.
A specimen from Kew's Herbarium

[FTEA]

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

Type
Type: Madagascar, Petit-Thouars s.n. (P, holo.)
Morphology General Habit
Slender but strong and wiry stemmed perennial 0.3–1 m long, with nodes in upper parts each with branches arranged subumbellately and subtended by greyish, pink or dark purple reduced leaves (scale-like bracts); each of the branches may have new whorls of branches, the branching repeated until nodes of the 4th order but the final subtending sterile culms or less often a stalked spikelet; branchlets filiform
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 8–12 mm long, 1.5–2 mm wide.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes green or greyish with a reddish brown central line, lanceolate, 8–12 mm long, the lower shorter, 3-veined the upper 1-veined
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens lateral.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 4 mm long
Morphology Reproductive morphology Fruits
Nutlets grey or pale brownish, obovoid, 2–2.5 mm long, 1.5–2 mm wide with darker tapering acuminate beak 2–3 mm long
Figures
Fig. 9, p48
Ecology
Lake, wholly submerged in 0.9–1.5 m of water; 2055 m
Distribution
Flora districts: T7 Range: Ivory Coast, S Nigeria, Congo-Kinshasa, Zambia;Madagascar, Sri Lanka, Malaysia, Cuba, Trinidad, Guiana, Paraguay, Venezuela, Guatemala, Florida and S Carolina

[FWTA]

Cyperaceae, Miss S. S. Hooper. Flora of West Tropical Africa 3:2. 1972

Morphology General Habit
A green, floating, alga-like plant, most closely resembling Eleocharis naumanniana in the single-flowered, soft, flattened spikelet
Ecology
In running water.

[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. 100 - 200 m.; Orinoquia.
Morphology General Habit
Hierba
Conservation
No Evaluada

Doubtfully present in:

Ecuador, Suriname

Native to:

Alabama, Argentina Northeast, Bolivia, Botswana, Brazil North, Brazil South, Colombia, Costa Rica, Cuba, Florida, French Guiana, Gabon, Georgia, Guatemala, Guyana, Honduras, India, Ivory Coast, Madagascar, Malaya, Nicaragua, Nigeria, Paraguay, Sri Lanka, Tanzania, Trinidad-Tobago, Venezuela, Zambia, Zaïre

Eleocharis confervoides (Poir.) Steud. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Hooker, J.D. [s.n.], Sikkim Rhynchospora ruppioides K000357822 Unknown type material
Oct 1, 2003 Luetzelburg, Ph.von [271], Bahia Websteria confervoides K000189212
Balansa, B. [2550], Paraguay Websteria confervoides K000632147 syntype
Ferguson, W. [3936], Sri Lanka Websteria confervoides K000881733 syntype
Ferguson, W. [3936], Sri Lanka Websteria confervoides K000881729 syntype
s.coll. [3936], Sri Lanka Websteria confervoides K000881732 syntype

First published in Syn. Pl. Glumac. 2: 82 (1855)

Accepted by

  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Jørgensen, P.M., Nee, M.H. & Beck., S.G. (eds.) (2013). Catálogo de las plantas vasculares de Bolivia Monographs in Systematic Botany from the Missouri Botanical Garden 127: 1-1741.
  • Lye, K.A. & Thery, P. (2012). Flore du Gabon 44: 1-230. Muséum National D'Histoire Naturelle, Paris.

Not accepted by

  • Govaerts, R. & Simpson, D.A. (2007). World Checklist of Cyperaceae. Sedges: 1-765. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Websteria confervoides.]
  • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Websteria confervoides.]

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/"

Kew Backbone Distributions

  • Bernal, R., Gradstein, R.S. & Celis, M. (eds.) (2016). Catálogo de plantas y líquenes de Colombia 1-2: 1-3068. Libro impreso.
  • Hammel, B.E. & al. (2003). Manual de Plantas de Costa Rica 2: 1-694. Missouri Botanical Garden Press, St. Louis.
  • Jørgensen, P.M., Nee, M.H. & Beck., S.G. (eds.) (2013). Catálogo de las plantas vasculares de Bolivia Monographs in Systematic Botany from the Missouri Botanical Garden 127: 1-1741.
  • Kral, R., Diamond, A.R., Ginzbarg, S.L., Hansen, C.J., Haynes, R.R., Keener, B.R., Lelong, M.G., Spaulding, D.D. & Woods, M. (2011). Annotated checklist of the vascular plants of Alabama: 1-112. Botanical reseach institute of Texas.
  • Lye, K.A. & Thery, P. (2012). Flore du Gabon 44: 1-230. Muséum National D'Histoire Naturelle, Paris.
  • Silveira, G.H. & Longhi-Wagner, H.M. (2008). Cyperaceae Juss. no Morro Santana - Porto Alegre e Viamåo, Rio Grande do Sul, Brasil Iheringia: Botânica 63: 295-320.

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

Flora of West Tropical Africa
Flora of West Tropical 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