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This species is accepted, and its native range is Cosmopolitan.
Lemna trisulca

[FTEA]

Lemnaceae, F. N. Hepper. Flora of Tropical East Africa. 1973

Morphology General Habit
Submerged aquatic.
Morphology General Thallus
Thalli thin, oblong-lanceolate, 5–10 mm. long, with a stipe almost as long again, 2–4 mm. wide, margin ± toothed in the upper third, entire and undulate below. Fertile thalli few, non-stipitate, much smaller than non-fertile thalli, free-floating at water-surface:flowering pouch produced near base of thallus.
Growth
Daughter thallus budding in pouch situated in lower third, each remaining attached by stipe, thus forming a lattice.
Morphology Roots
Root, if present, solitary; cap acute.
Morphology Reproductive morphology Inflorescences Bracts
Spathe present, enclosing 2 male and 1 female flower.
Morphology Reproductive morphology Flowers
Staminate flowers protandrous, each with one curved stamen at different stages of development, making direct contact with style of another plant. Pistillate flower with 1 ovule.
sex Male
Staminate flowers protandrous, each with one curved stamen at different stages of development, making direct contact with style of another plant.
sex Female
Pistillate flower with 1 ovule.
Morphology Reproductive morphology Seeds
Seed oblong, ribbed.
Figures
Fig. 1/1.
Habitat
Freshwater lakes and pools; 500–1900 m.
Distribution
not recorded elsewhere in tropical Africa, mainly in northern temperate zones K3 K4 K5 K6 T2 T3 U2

[CATE]

CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

Distribution
Areas with temperate climates in the whole world except very dry, very humid regions and South America; also not found in most of the oceanic islands.
Vernacular
Star Duckweed
Diagnostic
Thalli submerged (except for occasional free floating fertile thalli); thalli forming branching chains, each thallus stalked, margins toothed.
General Description
FRONDS: Fronds 3-50 coher together and very often form branched chains, 3-15 mm long (without stalk), 1-5 mm wide, 2-3 1/2 times as long as wide; stalk 2-20 mm long; no distinct turions which sink individually to the bottom of the water present. INFLORESCENCE/INFRUCTESCENCE: Plants occasionally flowering and rarely fruiting. Fruit symmetrical, 0.6-0.9 mm long, 0.7-1.2 mm wide; winged margin about 0.15 mm wide; style about 0.15 mm long; seed 0.6-1.1 mm long, 0.5-0.8 mm thick, with 12-18 distinct ribs.
Habitat
Ponds and stagnant waters.

Native to:

Afghanistan, Alabama, Alaska, Alberta, Algeria, Altay, Amur, Arizona, Arkansas, Austria, Baltic States, Bangladesh, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Central European Rus, China North-Central, China South-Central, China Southeast, Chita, Colorado, Connecticut, Czechoslovakia, Delaware, Denmark, District of Columbia, East European Russia, Finland, Florida, France, Georgia, Germany, Great Britain, Greece, Hungary, Idaho, Illinois, Indiana, Inner Mongolia, Iowa, Iran, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kansas, Kazakhstan, Kentucky, Kenya, Khabarovsk, Kirgizstan, Krasnoyarsk, Krym, Kuril Is., Louisiana, Magadan, Maine, Manchuria, Manitoba, Maryland, Massachusetts, Mexico Central, Mexico Northeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Myanmar, Nebraska, Netherlands, Nevada, New Guinea, New Hampshire, New Jersey, New Mexico, New South Wales, New York, Norfolk Is., North Carolina, North Caucasus, North Dakota, North European Russi, Northern Territory, Northwest European R, Norway, Ohio, Oklahoma, Ontario, Oregon, Pakistan, Palestine, Pennsylvania, Philippines, Poland, Portugal, Primorye, Queensland, Québec, Rhode I., Romania, Sakhalin, Sardegna, Saskatchewan, Sicilia, South Australia, South Carolina, South Dakota, South European Russi, Spain, Sumatera, Sweden, Switzerland, Tadzhikistan, Taiwan, Tanzania, Tasmania, Tennessee, Texas, Transcaucasus, Turkey, Turkey-in-Europe, Tuva, Uganda, Ukraine, Utah, Uzbekistan, Vermont, Victoria, Virginia, Washington, West Siberia, West Virginia, Western Australia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yugoslavia, Yukon

Introduced into:

Cuba

Lemna trisulca L. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Turrill, W.B., United Kingdom 22462.000
Milne-Redhead, E. [2393], United Kingdom 23598.000
Summerhayes, V.S. [1344], United Kingdom 24322.000
Richards, H.M. [20226], Tanzania 34103.000
Melville, R. [2247], Australia 36850.000

First published in Sp. Pl.: 970 (1753)

Accepted by

  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Castroviejo, S. & al. (eds.) (2008). Flora Iberica 18: 1-420. Real Jardín Botánico, CSIC, Madrid.
  • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
  • Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Ito, Y. & al. (2014). New or noteworthy plant collections from Myanmar (8) Acta Phytotaxonomica et Geobotanica 65: 89-97.
  • Iwatsuki, K., Boufford, D.E. & Ohba, H. (2016). Flora of Japan IVb: 1-335. Kodansha Ltd., Tokyo.
  • Takhtajan, A.L. (ed.) (2006). Konspekt Flora Kavkaza 2: 1-466. Editio Universitatis Petropolitanae.
  • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.

Literature

CATE Araceae

  • Hepper, F.N. 1973. Lemnaceae Flora of Tropical East Africa.
  • Landolt, E. 1986. The family of Lemnaceae - a monographic study, 1. Veröff. Geobot. Isnt. ETH (Stift. Rübel). 71: 1-563

Kew Backbone Distributions

  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
  • Ito, Y. & al. (2014). New or noteworthy plant collections from Myanmar (8) Acta Phytotaxonomica et Geobotanica 65: 89-97.
  • Takhtajan, A.L. (ed.) (2006). Konspekt Flora Kavkaza 2: 1-466. Editio Universitatis Petropolitanae.
  • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.

Flora of Tropical East Africa

  • Daubs, Monogr. Lemnac.: 32, t, 6 (1965).
  • Engl. in A. Engler & K. Prantl, Die Natürlichen Pflanzenfamilien 2, 3: 164, figs. 104, 106/A, B (1889).
  • Hegelm., Lemnac. Monogr.: 134, t. 5, 6, figs. 1–18 (1868).
  • L., Sp. Pl.: 970 (1753).
  • den Hartog in Gorteria 2: 68, fig. 1 (1964).

CATE Araceae
Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 17 Dec 2011.
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

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/