Halodule Endl.
  • Gen. Pl. 1368–1369. 1841.
  • [Greek halos, salt]


Cite taxon page as 'WFO (2020): Halodule Endl. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000016767. Accessed on: 03 Jun 2020'

General Information

Rhizomes branched, rooting at nodes. Shoots erect, with 2 scales at base. Leaves 1-4, alternate, flattened, linear, 3-veined, margin toothed at apex; sheaths compressed, auriculate, ligulate. Flowers solitary and terminal, enclosed in a leaf. Male flowers consisting of 2 unequally inserted anthers, without filament; pollen filiform. Female flowers subsessile; style simple. Fruitlet laterally subcompressed, with bony pericarp, beaked.

  • Provided by: [E].Flora Of CHina @ efloras.org
    • Source: [
    • 9
    • ]. 

    Stems erect, subtended by elliptic or ovate scales. Leaves 1--4; blade flattened, apex 2--3-toothed, lacunae absent; veins 3, midvein conspicuous, widened distally, lateral veins inconspicuous, each ending in tooth. Inflorescences solitary. Flowers axillary to leafy bract, inflated sheath absent. Staminate flowers: anthers attached to axis at different levels. Pistillate flowers nearly sessile, styles not divided into stigmas. Fruits achenelike, slightly compressed, nearly globose to ovoid.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 10
    • ]. 

    1. Halodule Endl.

    Diplanthera Thouars

    Por A. Novelo R. y A. Lot H.

    Tallos rizomatosos lisos, con 1-3(-5) raíces simples por nudo. Hojas 3-5; ápice de la vaina 2-auriculada; lámina acintada, el ápice 1,3-dentado, mucronato, redondeado, emarginado, obcordato, ciliado. Flores solitarias. Flores estaminadas pediculadas; anteras connatas en la base, una de ellas ligeramente más arriba y más grande que la otra. Carpelos con 1 estilo largo. Fruto ovoide, ligeramente comprimido lateralmente. Aprox. 8 spp. Ampliamente distribuidas en todos los mares tropicales y subtropicales del mundo.

    Bibliografía: Hartog, C. den Blumea 12: 289-312 (1964).

  • Provided by: [G].Flora Mesoamericana
    • Source: [
    • 11
    • 1
    • ]. 

    HALODULE Endl.; Diplanthera Thouars

    Rizomas con raíces en los nudos; tallos con 1–4 hojas y abrazados por escamas escariosas, elípticas u ovadas. Hojas sésiles; vaina 1–6 cm de largo; lámina comprimida, entera excepto en el ápice, frecuentemente adelgazada en la base, con 3-nervios, el principal conspicuo y ampliado en el ápice, los laterales inconspicuos, cada uno terminando en un diente, los ápices 2–3-dentados. Flores terminales, solitarias, cada una envuelta por una bráctea frondosa; flores estaminadas con anteras unidas dorsalmente en la base y unidas a los pedúnculos en niveles diferentes; flores pistiladas subsésiles, el estilo alargado. Fruto como aquenio, ligeramente comprimido, subgloboso a ovoide, con un rostro corto.

    Género con 6 especies ampliamente distribuidas a lo largo de las costas de los océanos tropicales y subtropicales de ambos hemisferios; 2 especies en Nicaragua.

    C. den Hartog. An approach to the taxonomy of the sea-grass genus Halodule Endl. (Potamogetonaceae). Blumea 12: 289–312. 1964.

  • Provided by: [F].Flora de Nicaragua
    • Source: [
    • 12
    • ]. 

    Plants herbaceous, glabrous, perennial, submersed in saline water, dioecious. Rhizomes creeping, simple or branched, with one or more roots and a short erect stem at each node. Stems with 1-4 leaves and subtended by scarious elliptic or ovate scales. Leaves alternate or appearing opposite because of reduced inter- nodes, sessile, divided into a blade and a sheath; sheath persisting longer than the blade, leaving a circular scar when shed; blades linear, compressed, terete, entire except apically, often narrowed at the base, 3-nerved, the midrib conspic- uous, the lateral nerves inconspicuous, each ending in a tooth, the apex 2-3 toothed. Flowers terminal, solitary, each enclosed in a leafy bract; perianth absent; staminate flowers stalked consisting of 2 anthers attached to the filament at different levels and joined dorsally at their base, the anthers 4-thecate, de- hiscing vertically; carpellate flowers subsesssile, consisting of two distinct uni- ovulate carpels, each carpel with a distinct style. Fruits achene-like with a stony pericarp, slightly compressed, subglobose to ovoid, with a short beak.

  • Provided by: [C].Flora de Panama
  • Morphology

    Submerse aquatic herbs; rhizome creeping, monopodial, with 2 vascular bundles; at each node 1-several roots and a short erect stem bearing 1– 4 leaves

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
    • ]. 

    Flowers solitary and terminal, enclosed in a leaf similar to others; bud in axil of penultimate leaf develops into prolongation of main axis giving rise to a sympodium; staminate flower subsessile, of 2 anthers attached at different levels, joined basally; carpellate flowers subsessile, of 2 free ovaries, each with a long style

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
    • ]. 

    Leaves with sheath 1– 6 cm long, semi-persistent, when shed leaving circular scar; blade linear, entire, narrowed at base, with 3 veins and conspicuous midrib which is widened or furcate at apex

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
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    Fruit subglobose-ovoid, shortly beaked, ± compressed, with stony pericarp.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
    • ]. 

    Habit

    herb

  • Provided by: [C].Flora de Panama
  • Distribution

    A genus of perhaps five species Halodule is widely distributed along the shores of tropical and sub-tropical oceans in both hemispheres.

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

    SELECTED REFERENCES

    Cox, P. A. 1988. Hydrophilous pollination. Annual Rev. Ecol. Syst. 19: 261--280. Cox, P. A. and R. B. Knox. 1989. Two-dimensional pollination in hydrophilous plants: Convergent evolution in the genera Halodule (Cymodoceaceae), Halophila (Hydrocharitaceae), Ruppia (Ruppiaceae), and Lepilaena (Zannichelliaceae). Amer. J. Bot. 76: 164--175. Hartog, C. den. 1964. An approach to the taxonomy of the sea-grass genus Halodule Endl. (Potamogetonaceae). Blumea 12: 289--312. Johnson, E. A. and S. L. Williams. Sexual reproduction in seagrasses: Reports for five Caribbean species with details for Halodule wrightii Aschers, and Syringodium filiforme Kutz. Caribbean J. Sci. Math. 18: 61--70. 1982. McMmillan, C. 1991. Isozyme patterning iin marine spermatophytes. In: L. Triest, ed. 1988+. Isozymes In Water Plants. Opera Bot. Belg. 1+ vols. Belgium, Meise. Vol. 4,: pp. 193--200. Phillips, R. C. 1967. On species of the seagrass, Halodule, in Florida. Bull. Mar. Sci. 17: 672--676.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 10
    • ]. 

    Other Local Names

    NameLanguageCountry
    [Greek halos, salt]

      Bibliography

     Information From

    Cymodoceaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    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.
    • B Flora of North America Association
    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
    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
    • D
    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
    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
    • F Missouri Botanical Garden
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • G Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).