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This genus is accepted, and is found in Europe, West Himalaya, Africa, Antarctic, South America, North America, Antipodean Island and Asia-Temperate.

[FTEA]

Scrophulariaceae, S.A. Ghazanfar, F.N. Hepper & D. Philcox. Flora of Tropical East Africa. 2008

Morphology General Habit
Small annual or perennial aquatic herbs, with slender stolons rooting to form new plants, glabrous
Morphology Leaves
Leaves fascicled or in rosettes, erect or floating, long-petiolate, cylindrical or with distinct lamina
Morphology Reproductive morphology Flowers
Flowers axillary, pedicels often deflexed in fruit
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate, (4–)5-toothed, teeth equal or calyx ± 2-lipped
Morphology Reproductive morphology Flowers Corolla
Corolla tube cylindrical, (4–)5-lobed, almost actinomorphic; lobes ovate or ovate-triangular to lanceolate, ± pilose on the upper side
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4 (2 short, 2 long)
Morphology Reproductive morphology Flowers Gynoecium
Ovary 2-locular; style variable in length; stigma capitate, papillose, ± 2 lobed
Morphology Reproductive morphology Fruits
Fruit capsular, dehiscing loculicidally by 2-valves
Morphology Reproductive morphology Seeds
Seeds few to numerous, minute, longitudinally multi-angular with fine transverse striations.
Note
All the species appear to be variable, and their taxonomy is imperfectly understood. Part of the problem lies is the presence of ecotypes found in deep water, shallow water and mud. This account basically follows the treatment by Glück (op. cit.), but a full revision of the genus is still required.

[FZ]

Scrophulariaceae, D. Philcox. Flora Zambesiaca 8:2. 1990

Morphology General Habit
Small, glabrous, tufted, creeping or floating, marsh or aquatic herbs.
Morphology Stem
Stemless or with slender stolon-like stems rooting at nodes.
Morphology Leaves
Leaves radical or fasciculate at nodes, rarely alternate on stems or branches, petiolate, erect or floating; lamina linear and petiole-like, spathulate or oblong-ovate.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles axillary, ebracteate, of ten shorter than leaves, frequently deflexed in fruit.
Morphology Reproductive morphology Flowers
Flowers small.
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate, thin, (4)5-lobed, persistent.
Morphology Reproductive morphology Flowers Corolla
Corolla tubular, campanulate, subrotate; limb 5-lobed, spreading, lobes subequal, rounded, ovate or oblong.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens four, didynamous, usually exserted; filaments filiform, inserted on corolla tube.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary shortly bilocular at base; ovules many; style short, incurved, apically thickened.
Morphology Reproductive morphology Fruits
Fruit capsular, ovoid to subglobose or spherical, bivalved, loculicidally dehiscent.
Morphology Reproductive morphology Seeds
Seeds numerous, striate, rugulose.

Native to:

Afghanistan, Alaska, Alberta, Aleutian Is., Altay, Amur, Angola, Antipodean Is., Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Austria, Baltic States, Belarus, Belgium, Bolivia, Botswana, Brazil South, British Columbia, Buryatiya, California, Cameroon, Cape Provinces, Central European Rus, Chile Central, Chile North, Chile South, China South-Central, China Southeast, Chita, Colombia, Colorado, Connecticut, Costa Rica, Crozet Is., Cyprus, Czechoslovakia, Denmark, Dominican Republic, East European Russia, Ecuador, Egypt, Eritrea, Ethiopia, Falkland Is., Finland, France, Free State, Germany, Great Britain, Greece, Greenland, Guatemala, Gulf of Guinea Is., Hungary, Iceland, Idaho, Ireland, Irkutsk, Italy, Kamchatka, Kazakhstan, Kenya, Kerguelen, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Krym, Kuril Is., KwaZulu-Natal, Labrador, Lebanon-Syria, Lesotho, Magadan, Maine, Malawi, Mali, Manchuria, Manitoba, Marion-Prince Edward, Maryland, Massachusetts, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Minnesota, Missouri, Mongolia, Montana, Morocco, Mozambique, Namibia, Nebraska, Netherlands, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Dakota, North European Russi, Northern Provinces, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Nunavut, Ontario, Oregon, Pennsylvania, Peru, Poland, Portugal, Primorye, Prince Edward I., Qinghai, Québec, Rhode I., Romania, Rwanda, Sakhalin, Saskatchewan, South Dakota, South European Russi, Spain, Sweden, Switzerland, Tadzhikistan, Tanzania, Tibet, Turkey, Uganda, Ukraine, Utah, Venezuela, Virginia, Washington, West Himalaya, West Siberia, Wyoming, Xinjiang, Yakutskiya, Yemen, Yugoslavia, Yukon, Zambia, Zaïre, Zimbabwe

Extinct in:

Delaware

Limosella L. appears in other Kew resources:

First published in Sp. Pl.: 631 (1753)

Literature

Flora of West Tropical Africa

  • Glück in Engl. Bot. Jahrb. 66: 488 (1934).
  • —F.T.A. 4, 2: 352

Flora Zambesiaca

  • Glück in Engl., Bot. Jahrb.66: 488–566, t. 6–8 (1934).
  • Sp. Pl. 2:631 (1753).

Flora of Tropical East Africa

  • E.J. 66: 488–566, t. 6–8 (1934)
  • N.B.G.B. 12: 77 (1934)
  • Sp. P1.: 631 (1753)

Flora Zambesiaca
Flora Zambesiaca
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

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