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This genus is accepted, and its native range is Cosmopolitan.

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Small to large annual or perennial glabrous blade-less herbs; stems usually terete or triangular, hollow or pith-filled, sometimes with transverse septa
Morphology Leaves Leaf sheaths
Leaf-sheaths usually pale brownish, but often purple at the base, tubular, truncate above and ending in a short triangular or lanceolate lobe
Morphology Reproductive morphology Inflorescences
Inflorescence a single terminal ovate to lanceolate, rarely almost globose, spikelet; leafy involucral bracts absent
Morphology Reproductive morphology Inflorescences Bracts Glume
Fertile glumes spirally arranged and imbricate, usually numerous, pale grey to dark brown Lower 1–2 glumes of spikelet sometimes much stiffer than the fertile glumes
Morphology Reproductive morphology Flowers Perianth
Perianth of 3–9 bristles shorter or longer than the nutlet, or absent
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 1–3
Morphology Reproductive morphology Flowers Gynoecium Style
Style with 2–3 branches
Morphology Reproductive morphology Fruits
Nutlet obovate or urn-shaped, whitish, brown or black, smooth, reticulate, pitted or longitudinally grooved with transverse ridges, with the style base persistent as a conical or flattened appendage.
Distribution
About 300 species in all tropical and temperate parts of the world, but with most species in America.

[FTEA]

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

Note
Sometimes spelled Heleocharis, but this is not correct
Morphology General Habit
Annual or perennial herbs, glabrous.
Vegetative Multiplication Rhizomes
Rhizome often strong, horizontal, and often producing stolons
Morphology Culms
Culms green and photosynthesizing, hollow or filled with pith, rarely with transverse septa
Morphology Leaves
Leaves reduced to scarious scales on stem base and to tubular sheaths, truncate or ending in a short lobe
Morphology Reproductive morphology Inflorescences
Inflorescence a single terminal spikelet 0.1–50 mm long, or sometimes the spikelet aborted and only a scar present; lowest 1–2 glumes equal to or different from the upper.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes spirally arranged, imbricate, florets bisexual but the lowermost 1–2 glumes usually sterile, glabrous, often with pale border and midrib
Morphology Reproductive morphology Flowers Perianth
Perianth of 3–9 bristles, or reduced to a minute basal rim to the ovary/nutlet
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 1–3
Morphology Reproductive morphology Flowers Gynoecium Style
Style with swollen base, persistent in fruit, and with 2–3 branches, sometimes varying even within a single plant, the branches with beaded hairs (unicellular with annular constrictions)
Morphology Reproductive morphology Fruits
Nutlet obovoid or urn-shaped, with base of style persistent and often separated from main fruit body by a constriction, pitted or grooved longitudinally with transversal ridges.
Ecology
Mostly in the Americas. Wet or seasonally inundated habitats.

[FTEA]

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

Morphology General Habit
Submerged perennial aquatic plants rooting in mud.
Morphology Culms
Culms much-branched, many-noded with many sterile stems in successive whorls and only occasional fertile culms
Morphology Leaves
Leaves a tubular sheath
Morphology Reproductive morphology Inflorescences
Inflorescence a single spikelet
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets of 2 glumes and a single bisexual flower.
Morphology Reproductive morphology Flowers Perianth
Perianth-segments 6–11, filiform with many recurved spines.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 3 with large anthers
Morphology Reproductive morphology Flowers Gynoecium Style
Style 2-branched
Morphology Reproductive morphology Fruits
Nutlets broadly ovoid or round, flattened, with small persistent style-base

Native to:

Afghanistan, Alabama, Alaska, Albania, Alberta, Aleutian Is., Algeria, Altay, Amur, Andaman Is., Angola, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Aruba, Assam, Austria, Azores, Bahamas, Baleares, Baltic States, Bangladesh, Belarus, Belgium, Belize, Benin, Bermuda, Bismarck Archipelago, Bolivia, Borneo, Botswana, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, British Columbia, Bulgaria, Burkina, Burundi, Buryatiya, California, Cambodia, Cameroon, Canary Is., Cape Provinces, Caroline Is., Cayman Is., Central African Repu, Central American Pac, Central European Rus, Chad, Chagos Archipelago, Chatham Is., Chile Central, Chile North, Chile South, China North-Central, China South-Central, China Southeast, Chita, Christmas I., Cocos (Keeling) Is., Colombia, Colorado, Congo, Connecticut, Cook Is., Corse, Costa Rica, Cuba, Cyprus, Czechoslovakia, Delaware, Denmark, District of Columbia, Djibouti, Dominican Republic, Dominican Republic, East Aegean Is., East European Russia, East Himalaya, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Ethiopia, Falkland Is., Fiji, Finland, Florida, France, Free State, French Guiana, Føroyar, Gabon, Galápagos, Gambia, Georgia, Germany, Ghana, Gilbert Is., Great Britain, Greece, Greenland, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Gulf States, Guyana, Hainan, Haiti, Hawaii, Honduras, Hungary, Iceland, Idaho, Illinois, India, Indiana, Inner Mongolia, Iowa, Iran, Iraq, Ireland, Irkutsk, Italy, Ivory Coast, Jamaica, Japan, Jawa, Juan Fernández Is., Kamchatka, Kansas, Kazakhstan, Kentucky, Kenya, Kermadec Is., Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kriti, Krym, Kuril Is., KwaZulu-Natal, Labrador, Laos, Lebanon-Syria, Leeward Is., Lesotho, Lesser Sunda Is., Liberia, Libya, Louisiana, Madagascar, Madeira, Magadan, Maine, Malawi, Malaya, Mali, Maluku, Manchuria, Manitoba, Marianas, Maryland, Massachusetts, Mauritania, Mauritius, Mexican Pacific Is., Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Mozambique, Myanmar, Namibia, Nansei-shoto, Nebraska, Nepal, Netherlands, Netherlands Antilles, Nevada, New Brunswick, New Caledonia, New Guinea, New Hampshire, New Jersey, New Mexico, New South Wales, New York, New Zealand North, New Zealand South, Newfoundland, Nicaragua, Nicobar Is., Niger, Nigeria, Norfolk Is., North Carolina, North Caucasus, North Caucasus, North Dakota, North European Russi, Northern Provinces, Northern Territory, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Nunavut, Ohio, Oklahoma, Oman, Ontario, Oregon, Pakistan, Palestine, Panamá, Paraguay, Pennsylvania, Peru, Philippines, Poland, Portugal, Primorye, Prince Edward I., Puerto Rico, Qinghai, Queensland, Québec, Rhode I., Romania, Rwanda, Réunion, Sakhalin, Samoa, Sardegna, Saskatchewan, Saudi Arabia, Senegal, Seychelles, Sicilia, Sierra Leone, Sinai, Society Is., Socotra, Solomon Is., Somalia, South Australia, South Carolina, South Dakota, South European Russi, Spain, Sri Lanka, Sudan, Sulawesi, Sumatera, Suriname, Swaziland, Sweden, Switzerland, Tadzhikistan, Taiwan, Tanzania, Tasmania, Tennessee, Texas, Thailand, Tibet, Togo, Tokelau-Manihiki, Tonga, Transcaucasus, Trinidad-Tobago, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Turks-Caicos Is., Tuva, Uganda, Ukraine, Uruguay, Utah, Uzbekistan, Venezuela, Venezuelan Antilles, Vermont, Victoria, Vietnam, Virginia, Wallis-Futuna Is., Washington, West Himalaya, West Siberia, West Virginia, Western Australia, Windward Is., Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yemen, Yugoslavia, Yukon, Zambia, Zaïre, Zimbabwe

Introduced into:

Nauru

Eleocharis R.Br. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Rico, L. [1632], Bolivia K000295247
s.coll. [Cat. no. 3454], India Elaeocharis K001119439
s.coll. [Cat. no. 3454] Elaeocharis K001119436
s.coll. [Cat. no. 3454] Elaeocharis K001119437
Wallich, N. [Cat. no. 3455], India Elaeocharis K001119442
s.coll. [Cat. no. 3450], India Elaeocharis K001119432
s.coll. [Cat. no. 3454] Elaeocharis K001119438
Blinkworth, R. [Cat. no. 3449], India Elaeocharis K001119431
Wallich, N. [Cat. no. 3454], India Elaeocharis K001119441
Bruce, H. [Cat. no. 3451], India Elaeocharis K001119433
s.coll. [Cat. no. 3454] Elaeocharis K001119435
Wallich, N. [Cat. no. 3452], Nepal Elaeocharis K001119434
s.coll. [Cat. no. 3454], India Elaeocharis K001119440
Wallich, N. [Cat. no. 3455], India Elaeocharis K001119443

First published in Prodr. Fl. Nov. Holland.: 224 (1810)

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.
  • Govaerts, R. (2004). World Checklist of Monocotyledons Database in ACCESS: 1-54382. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.

Literature

Catálogo de Plantas y Líquenes de Colombia

  • WCVP (2021). World Checklist of Vascular Plants, version 2.0. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://wcvp.science.kew.org/ Retrieved 28 April 2021

Flora of West Tropical Africa

  • F.T.A. 8: 404 (1902).
  • Prod. Fl. Nov. Holl. 224 (1810)

Flora of Somalia

  • Flora Somalia, Vol 4, (1995) Author: by K. A. Lye [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Prodr.: 224 (1810)

Flora of Somalia
Flora of Somalia
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/

Plants and People Africa
Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
© Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/