Elatinaceae Dumort.
  • Anal. Fam. Pl. 44, 49. 1829.
  • Waterwort Family


Cite taxon page as 'WFO (2020): Elatinaceae Dumort. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-7000000211. Accessed on: 24 Nov 2020'

General Information

Herbs [subshrubs], annual [short-lived perennial], synoecious [polygamous]. Leaves opposite [whorled], simple; stipules present; petiole present or absent; blade margins entire or serrulate; venation pinnate. Inflorescences axillary, usually cymes or flowers solitary, sometimes 2[–3]-flowered clusters. Flowers bisexual [pistillate]; perianth and androecium hypogynous; hypanthium absent; sepals 2–5, distinct or connate basally; petals (0 or) 2–5, distinct; nectary absent; stamens [0–]1–10, distinct, free; anthers dehiscing by longitudinal slits; pistil 1, 2–5-carpellate, ovary superior, 2–5-locular, placentation axile; ovules 2–33[–44] per locule, anatropous; styles 2–5, distinct; stigmas 2–5, capitate. Fruits capsules, dehiscence septicidal or irregular. Seeds 2–33[–44] per locule.

  • Provided by: [D].Flora of North America @ efloras.org
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    Herbs annual, perennial, or subshrubs, semiaquatic or terrestrial, dwarf. Leaves opposite or verticillate, petiolate; stipules paired; leaf blade simple, margin entire or serrate. Flowers solitary, clustered, or in axillary cymes, bisexual, actinomorphic, small. Sepals 2-5, imbricate, free or slightly united, thinly membranous or with nearly pellucid margins. Petals 2-5, imbricate in bud, free, membranous. Stamens 1 or 2 × as many as sepals, free; anthers dorsifixed, 2-loculed. Ovary superior, 2-5-loculed, many ovuled; placentation axile; styles 2-5, free, short; stigmas capitate. Fruit a septicidal capsule, membranous, leathery, or crustaceous. Seeds numerous, straight or curved, small; testa often rugose; endosperm absent.

  • Provided by: [E].Flora Of CHina @ efloras.org
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    Morphology

    Fruit a septicidal capsule

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    • 1
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    Ovary superior, 3–5-celled; placentation axile; styles 3–5, free; ovules numerous

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    Stamens from as many to twice as many as the petals, free, hypogynous; anthers 2-celled, opening by longitudinal slits

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    Petals as many, hypogynous, imbricate, persistent

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    • 1
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    Seeds without endosperm, straight or curved; embryo with short cotyledons

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    • 1
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    Herbs or low shrubs

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    • 1
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    Leaves opposite or verticillate, simple; stipules present, paired

  • Provided by: [C].Plants Of the World Online Portal - FWTA
    • Source: [
    • 1
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    Flowers small, actinomorphic, hermaphrodite, axillary, solitary or cymose

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    • 1
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    Sepals 3–5, free, imbricate

  • Provided by: [C].Plants Of the World Online Portal - FWTA
    • Source: [
    • 1
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    Fruit a septicidal capsule

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    • 2
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    Seeds straight or curved, without or with very little endosperm; embryo straight or curved, with short cotyledons

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Ovary superior, (2–)3–5-locular, with axile placentation; ovules numerous; styles (2–)3–5, free

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
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    Stamens as many as and alternate to twice as many as the petals, free, hypogynous; anthers dithecous, opening by longitudinal slits

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
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    Petals (2–)3–5(–6), hypogynous, imbricate, persistent

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
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    Sepals (2–)3–5(–6), free, imbricate, not nerved or 1-nerved, mostly with pellucid margins

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Herbs or small shrubs, sometimes aquatic

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
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    Leaves opposite or verticillate, simple or submerged leaves sometimes much divided, entire or serrate; stipules present, paired

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
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    Flowers small, regular, hermaphrodite, axillary, solitary, cymose, fasciculate or in glomerules, occasionally cleistogamous

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
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    Herbs or low shrubs

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
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    Leaves opposite or verticillate, simple, entire or toothed; stipules present, paired

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 3
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    Flowers small, actinomorphic, bisexual, axillary, solitary or in small cymes, fascicles or verticillate clusters

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 3
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    Sepals 3–5, imbricate

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 3
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    Seeds without endosperm, straight or curved; embryo with short cotyledons

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 3
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    Fruit a septicidal capsule

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 3
    • ]. 

    Ovary superior, 3–5-locular, multiovulate; styles 2–5, free

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 3
    • ]. 

    Stamens as many, or twice as many as the sepals; anthers 2-thecous, opening by longitudinal slits

  • Provided by: [A].Plants Of the World Online Portal - FZ
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    • 3
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    Petals 3–5(6), imbricate, persistent

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 3
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    Herbes'annuelles, parfois aquatiques, sous-arbrisseaux à arbrisseaux.'Feuilles'opposées ou verticillées, généralement dentées à dents glanduleuses, parfois entières; stipules interpétiolaires.'Inflorescences'en cymes ou fascicules axillaires ou fleurs solitaires axillaires; bractées parfois présentes.'Fleurs'pédicellées ou sessiles, petites, ☿, régulières; sépales 2-5(6), imbriqués, libres ou soudés à la base; pétales en même nombre que les sépales, imbriqués, libres, persistants; étamines en nombre double ou égal par avortement à celui des pétales; filets libres, souvent élargis-ailés à la base; anthères dorsifixes, versatiles, introrses, 2-loculaires, à loges souvent divergentes, déhiscentes par fentes longitudinales; ovaire supère, 2-5-loculaire, à placentation centrale; ovules ∞, horizontaux ou ascendants, anatropes; styles 2-5, libres; stigmates ± renflés.'Fruits': capsules septicides.'Graines sans albumen; embryon droit ou courbé.\n\t\t\tFamille des régions tropicales, subtropicales et tempérées, comprenant 2 genres et 35-40 espèces; au Congo, 1 genre et 1 espèce.

  • Provided by: [F].Flore d'Afrique Centrale
    • Source: [
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    Literature

    SELECTED REFERENCES Davis, C. C. and M. W. Chase. 2004. Elatinaceae are sister to Malpighiaceae; Peridiscaceae belong to Saxifragales. Amer. J. Bot. 91: 262–273. Tucker, G. C. 1986. The genera of Elatinaceae in the southeastern United States. J. Arnold Arbor. 67: 471–483.

  • Provided by: [D].Flora of North America @ efloras.org
    • Source: [
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    Included Genus

    Other Local Names

    NameLanguageCountry
    Waterwort Family

     Information From

    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • A
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • B
    Plants Of the World Online Portal - FWTA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • C The Trustees of the Royal Botanic Gardens, Kew
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • D Flora of North America Association
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Missouri Botanical Garden
    Flore d'Afrique Centrale
    https://www.floredafriquecentrale.be
    • F http://creativecommons.org/licenses/by/4.0/ Attribution 4.0 International (CC BY 4.0)
    Elatinaceae
    World Flora Online Data. 2017.
    • G CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).