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This genus is accepted, and its native range is Cosmopolitan.
Ludwigia (Onagraceae)

[FSOM]

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

Morphology General Habit
Mostly herbs, rarely shrubby
Morphology Leaves
Leaves alternate or opposite, mostly entire; stipules small or absent
Morphology Reproductive morphology Flowers
Flowers regular, (3–)4–5(–7)-merous, yellow
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens as many or twice as many as petals
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma capitate, often lobed
Morphology Reproductive morphology Fruits
Capsule elongate, with irregular dehiscence
Morphology Reproductive morphology Seeds
Seeds with the raphe sometimes much enlarged.
Distribution
Mainly tropical genus of some 85 species.
Note
For generic circumscription, see Raven in Reinwardtia 6: 327–427 (1963).

[FZ]

Onagraceae, P. H. Raven. Flora Zambesiaca 4. 1978

Morphology General Habit
The reasons for uniting Ludwigia, Jussiaea and Isnardia are reviewed in Reinwardtia 6: 327–427 (1963).

[FIQ]

Ghazanfar, S. A. & Edmondson, J. R (Eds). (2014) Flora of Iraq, Volume 5 Part 2: Lythraceae to Campanulaceae.

Morphology General Habit
Perennial or annual herbs, sometimes woody at base
Morphology Leaves
Leaves opposite or more commonly spirally arranged, simple, mostly entire
Morphology Reproductive morphology Flowers
Flowers axillary or in definite leafy racemes Flowers not epigynous
Morphology Reproductive morphology Flowers Calyx
Sepals 4 or 5, less commonly 3 or 6
Morphology Reproductive morphology Flowers Corolla
Petals equal in number to sepals or absent, yellow or white
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens equal in number to or twice as many as the sepals
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary usually with as many cells as there are sepals, usually many-seeded; stigma hemispherical-Fruit a capsule, indehiscent or apically, terminally or locudicidally dehiscent
Morphology Reproductive morphology Seeds
Seeds usually numerous, 1- or many-ranked in each cell of capsule.
Note
Ludwigia (commemorating the German physician Christian Gottlieb Ludwig (1709-1773) of Leipzig.) The genus Jussiaea, formerly recognized, comprised those species with the stamens twice as many as the sepals, but the genera as thus delimited are clearly artificial groupings which should be abandoned (see Brenan in Kew Bull. 1953, 163‒173; Hara in Journ. Jap. Bot. 238: 289‒294, 1953).
Distribution
About 81 species of marsh plants with a predominantly tropical distribution.

[FTEA]

Onagraceae, J. P. M. Brenan. Flora of Tropical East Africa. 1953

Morphology General Habit
Mostly annual or perennial herbs, rarely becoming shrubby, or very rarely even a small tree
Morphology Leaves
Leaves alternate, entire in the African species
Morphology Leaves Stipules
Stipules very small or none
Morphology Reproductive morphology Flowers
Flowers regular
Morphology Reproductive morphology Flowers Calyx
Sepals mostly 4–5, rarely 3–7, persistent after flowering
Morphology Reproductive morphology Flowers Receptacle
Receptacle not or hardly prolonged beyond the ovary
Morphology Reproductive morphology Flowers Corolla
Petals as many as sepals, in our species always yellow (in others sometimes white)
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens as many as petals (Ludwigia L.) or twice as many (Jussiaea L., sens. strict.)
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma capitate, subentire or lobulate
Morphology Reproductive morphology Flowers Gynoecium Ovary Ovules
Ovules uniseriate or pluriseriate in each cell of the 3–7-celled ovary
Morphology Reproductive morphology Fruits
Fruit a capsule, normally elongate, sometimes short, septicidally dehiscent with the valve-midribs later splitting, or with the pericarp irregularly breaking, sometimes very slowly so or apparently not
Morphology Reproductive morphology Seeds
Seeds without hairs, free or surrounded by endocarp; raphe sometimes much enlarged.

Native to:

Afghanistan, Alabama, Albania, Algeria, Andaman Is., Angola, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Aruba, Assam, Austria, Bahamas, Bangladesh, 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, California, Cambodia, Cameroon, Cape Provinces, Cape Verde, Caprivi Strip, Caroline Is., Cayman Is., Central African Repu, Central American Pac, Chad, Chile Central, Chile North, Chile South, China North-Central, China South-Central, China Southeast, Colombia, Comoros, Congo, Connecticut, Corse, Costa Rica, Cuba, Czechoslovakia, Delaware, District of Columbia, Dominican Republic, East Himalaya, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Ethiopia, Fiji, Florida, France, Free State, French Guiana, Gabon, Galápagos, Gambia, Georgia, Germany, Ghana, Gilbert Is., Great Britain, Greece, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Haiti, Honduras, Hungary, Idaho, Illinois, India, Indiana, Inner Mongolia, Iowa, Iran, Iraq, Italy, Ivory Coast, Jamaica, Japan, Jawa, Kansas, Kentucky, Kenya, Khabarovsk, Korea, KwaZulu-Natal, Laos, Lebanon-Syria, Leeward Is., Lesotho, Lesser Sunda Is., Liberia, Libya, Louisiana, Madagascar, Maine, Malawi, Malaya, Mali, Maluku, Manchuria, Marianas, Marshall Is., Maryland, Massachusetts, Mauritania, Mauritius, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, 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, Nicaragua, Nicobar Is., Niger, Nigeria, North Carolina, North Caucasus, Northern Provinces, Northern Territory, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pakistan, Palestine, Panamá, Paraguay, Pennsylvania, Peru, Philippines, Poland, Portugal, Primorye, Puerto Rico, Queensland, Québec, Rhode I., Rodrigues, Romania, Rwanda, Réunion, Sardegna, Saudi Arabia, Senegal, Seychelles, Sierra Leone, Sinai, Solomon Is., Somalia, South Australia, South Carolina, Spain, Sri Lanka, Sudan, Sulawesi, Sumatera, Suriname, Swaziland, Switzerland, Tadzhikistan, Taiwan, Tanzania, Tennessee, Texas, Thailand, Tibet, Togo, Transcaucasus, Trinidad-Tobago, Tunisia, Turkey, Turkey-in-Europe, Uganda, Ukraine, Uruguay, Uzbekistan, Venezuela, Venezuelan Antilles, Vermont, Victoria, Vietnam, Virginia, Washington, West Himalaya, West Virginia, Western Australia, Windward Is., Wisconsin, Yemen, Yugoslavia, Zambia, Zaïre, Zimbabwe

Extinct in:

Socotra

Introduced into:

Cabinda, Christmas I., Cook Is., Hawaii, Line Is., Marquesas, Nauru, Ogasawara-shoto, Samoa, Society Is., Tokelau-Manihiki, Tonga, Tuamotu, Tubuai Is., Tuvalu, Wallis-Futuna Is.

Ludwigia L. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Feb 23, 2006 Wood [9849], Bolivia K000275725
Pires, J.M. [51211], Brazil K001077562
Guedes, M.L. [PCD248], Brazil K001077571
Ganev, W. [3914], Brazil K001077567
Guedes, M.L. [2953], Brazil K001077572
Hamilton, W.D. [85], Brazil K001077563
Lombardi, J.A. [4809], Brazil K001077570
Hind, D.J.N. [H50478], Brazil K001077566
Sellow [161], Brazil K001077573
Hunt, D.R. [6044], Brazil K001077568
Leeuwenberg, A.J.M. [8692], Cameroon K000050359
Giulietti, A.M. [s.n.], Brazil K001077569
Leeuwenberg, A.J.M. [8690], Cameroon K000050360
Hamilton, W.D. [132], Brazil K001077564
Harley, R.M. [54665], Brazil K001077565

First published in Sp. Pl.: 118 (1753)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Flora of Iraq

  • Linnaeus Gen. Pl. ed. 5, 153 (1754)
  • Linnaeus Sp. Pl. ed. 1, 118 (1753);

Flora Zambesiaca

  • Gen. Pl. ed. 5: 55 (1754).
  • Sp. Pl. 1: 118 (1753)

Flora of Somalia

  • Flora Somalia, Vol 1, (1993) Author: by M. Thulin [updated by M. Thulin 2008]

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Iraq
http://creativecommons.org/licenses/by-nc-sa/3.0

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/

Neotropikey
Milliken, W., Klitgard, B. and Baracat, A. (2009 onwards), Neotropikey - Interactive key and information resources for flowering plants of the Neotropics.
http://creativecommons.org/licenses/by/3.0