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  1. Family: Zosteraceae Dumort.

    1. Zostera L.

        2. This genus is accepted, and its native range is Temp. & Subtropical to New Guinea.

    [FTEA]

    Zosteraceae, H. J. Beentje, M.Sc., Ph.D., F.L.S.. Flora of Tropical East Africa. 1999

    Habit
    Submerged marine plants; rhizome matted, orange-brown, creeping, monopodial, compressed, rooting at the nodes; erect stems annual, compressed, glabrous, the sterile stems short and arising from the axils of rhizomatous leaves, the floriferous stems terminal or lateral, sympodial, longer than the sterile stems, branched, each branch with an inflorescence
    Leaves
    Leaves distichous, linear; leaf-sheath compressed, amplexicaul, membranous, auriculate and ligulate, persisting longer than the leaf- blades; leaf-blade linear, with 3–11 nerves and accessory bundles in between, margins entire or somewhat denticulate distally
    Inflorescences
    Inflorescence terminal or lateral, forming erect annual branches, each terminating in a fertile leaf with the sheath containing a sessile, flattened, linear spadix with or without bract-like lobes (retinacula) that fold over one or more flowers
    Flowers
    Flowers in two lines of alternating staminate and pistillate flowers on one surface of spadix; anthers single, sessile, of (1–)2(–3) locules connected by a ridge-like connective; ovary uniovulate, with persistent style, the stigmas protruding from the sheath at anthesis
    Fruits
    Fruit membranous, cylindrical to ovoid, 1-seeded, indehiscent or irregularly dehiscent; pericarp scarious; seed ellipsoid or ovoid, smooth or ribbed; embryo grooved.

    Images

    Distribution

    Doubtfully present in:

    Albania

    Native to:

    Alaska, Aleutian Is., Algeria, Angola, Baleares, Baltic States, Bangladesh, Belgium, Bermuda, British Columbia, Bulgaria, California, Canary Is., Cape Provinces, Central American Pac, Chile Central, China North-Central, Connecticut, Corse, Delaware, Denmark, East Aegean Is., Egypt, Finland, France, Føroyar, Germany, Great Britain, Greece, Greenland, Honduras, Iceland, Iran, Ireland, Italy, Japan, Kamchatka, Kazakhstan, Kenya, Khabarovsk, Korea, Kriti, Krym, Kuril Is., KwaZulu-Natal, Libya, Madagascar, Magadan, Maine, Manchuria, Maryland, Masachusettes, Mauritania, Mexican Pacific Is., Mexico Northwest, Morocco, Mozambique, Myanmar, Nansei-shoto, Netherlands, New Brunswick, New Guinea, New Hampshire, New South Wales, New York, New Zealand North, New Zealand South, Newfoundland, Norfolk Is., North Carolina, North Caucasus, North European Russi, Northwest European R, Norway, Nova Scotia, Nunavut, Ontario, Oregon, Poland, Portugal, Primorye, Prince Edward I., Queensland, Québec, Rhode I., Romania, Sakhalin, Sardegna, Sicilia, Sinai, South Australia, South European Russi, Spain, Sweden, Taiwan, Tanzania, Tasmania, Thailand, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Ukraine, Uzbekistan, Victoria, Vietnam, Virginia, Washington, Western Australia, Western Sahara, Yugoslavia, Yukon

    Zostera L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Melville, R., New Zealand 37179.000

    First published in Sp. Pl.: 968 (1753)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of Tropical East Africa
    • den Hartog, Sea-grasses of the World: 42 (1970)
    • Setch. in Proc. Nat. Acad. Sci. 19: 810 (1933)
    • Graebn. in E.P. 4, 2: 27 (1907)
    • Asch. in E. & P. Pf. 2, 1: 201 (1889)
    • L., Gen. Pl. ed. 5: 415 (1754)
    • Sp. Pl.: 968 (1753)

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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