Ceratophyllum L.
  • Sp. Pl. 2: 992. 1753. (1 May 1753)
  • Hornwort, cornifle [Greek ceratos, horn, and phyllon, leaf]


This taxon is accepted by Ceratophyllaceae
Notes: More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0

General Information

Morphological characters and geographical distribution are the same as those of the family.

  • Provided by: [F].Flora Of CHina @ efloras.org
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    Plants , submersed perennials. Stems suspended or anchored by branches buried in substrate; branches 0-3 per node. Leaves 3-11 per whorl, cauline; petiole inconspicuous. Leaf blade simple or forked into linear-filiform, denticulate segments. Inflorescences extra-axillary, alternating with leaves. Flowers: bracts basally connate, foliaceous; pedicel less than 1 mm or essentially absent. Staminate flowers: anther 2-locular, connective projecting as apical appendage. Pistillate flowers: ovary tapering to persistent, spinelike style; ovule pendulous. Achene ellipsoid, moderately compressed, surface smooth or tuberculate, basal or marginal spines (or both) present or absent, terminal spine present, marginal wing present or absent. x = 12, 19, 20.

  • Provided by: [D].Flora of North America @ efloras.org
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    CERATOPHYLLUM L.

    Características de la familia.

    1. Hojas maduras 1 ó 2 veces furcadas, gruesas, dentículos conspicuos; margen del aquenio sin alas ni espinas ... C. demersum

    1. Hojas maduras 3 ó 4 veces furcadas, textura fina, dentículos inconspicuos; margen del aquenio con un ala espinosa ... C. muricatum ssp. australe

  • Provided by: [I].Flora de Nicaragua
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    Submerged aquatic herbs; stems branching; roots wanting. Leaves verticil- late, flat, dissected, sometimes serrate. Inflorescences of solitary or clustered flowers in the leaf axils. Flowers unisexual, the calyx many segmented, the sepals basally united, the staminate flowers with about a dozen erect, subsessile sta- mens, the pistillate flowers with a single superior ovary, locule 1, ovule 1, the

  • Provided by: [C].Flora de Panama
    • Source: [
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    placentation parietal, the style slender. Fruit a nut exserted from the perianth, the style persistent.

  • Provided by: [C].Flora de Panama
    • Source: [
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    The only genus of the family.

  • Provided by: [J].New York Botanical Garden
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    Morphology

    Characters of the family.

  • Provided by: [H].Plants Of the World Online Portal - FWTA
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    • 2
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    Characters as for the family.

  • Provided by: [E].Plants Of the World Online Portal - FZ
    • Source: [
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    Characters of the family.

  • Provided by: [G].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
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    Habit

    herbs

  • Provided by: [C].Flora de Panama
    • Source: [
    • 13
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    Literature

    SELECTED REFERENCES

    Fassett, N. C. 1953. North American Ceratophyllum. Comun. Inst. Trop. Invest. Ci. Univ. El Salvador 2: 25-45. Herendeen, P. S., D. H. Les, and D. L. Dilcher. 1990. Fossil Ceratophyllum (Ceratophyllaceae) from the Tertiary of North America. Amer. J. Bot. 77: 7-16. Jones, E. N. 1931. The morphology and biology of Ceratophyllum demersum. Stud. Nat. Hist. Iowa Univ. 13: 11-55. Les, D. H. 1985. The taxonomic significance of plumule morphology in Ceratophyllum (Ceratophyllaceae). Syst. Bot. 10: 338-346. Les, D. H. 1986. The phytogeography of Ceratophyllum demersum and C. echinatum in glaciated North America. Canad. J. Bot. 64: 498-509. Les, D. H. 1986b. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), I. Fruit spine variation and relationships of C. demersum, C. submersum, and C. apiculatum. Syst. Bot. 11: 549-558. Les, D. H. 1988b. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), II. Fruit variation and systematics of the "spiny-margined" group. Syst. Bot. 13: 73-86. Les, D. H. 1988c. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), III. Relationships of the "facially-spined" group. Syst. Bot. 13: 509-518. Les, D. H. 1989. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), IV. Summary of proposed relationships and evolutionary trends. Syst. Bot. 14: 254-262. Lowden, R. M. 1978. Studies in the submerged genus Ceratophyllum L. in the neotropics. Aquat. Bot. 4: 127-142. Muenscher, W. C. 1940. Fruits and seedlings of Ceratophyllum. Amer. J. Bot. 27: 231-233.

  • Provided by: [D].Flora of North America @ efloras.org
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    Other Local Names

    NameLanguageCountry
    Hornwort, cornifle [Greek ceratos, horn, and phyllon, leaf]

     Information From

    Ceratophyllaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • B Missouri Botanical Garden
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • C Missouri Botanical Garden
    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
    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
    • E
    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.
    • F Missouri Botanical Garden
    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
    • G
    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
    • H The Trustees of the Royal Botanic Gardens, Kew
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • I Missouri Botanical Garden
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • J Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • K CC0 1.0 Universal (CC0 1.0).