1. Family: Poaceae Barnhart
    1. Genus: Zizania L.
      1. Zizania aquatica L.

        This species is accepted, and its native range is Central & E. Canada to N. Central & E. U.S.A.

    [GB]
    Habit
    Annual, or perennial; short-lived. Culms erect; reed-like; 90-300 cm long; spongy. Ligule an eciliate membrane; 0.3-20 mm long. Leaf-blades 10-40 mm wide. Leaf-blade surface scaberulous; glabrous.
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence. Inflorescence a panicle. Panicle open; ovate; 30-50 cm long. Primary panicle branches 15-20 cm long. Sexes segregated; on unisexual branches; with male below. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled. Pedicels bearing a few hairs; tip cupuliform.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 20 mm long; falling entire.
    Glume
    Glumes both absent or obscure.
    Florets
    Fertile florets female. Fertile lemma lanceolate; 20 mm long; chartaceous; pallid; without keel; 3 -veined. Lemma surface scaberulous; rough generally. Lemma margins interlocking with palea margins. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 10-20 mm long overall. Palea 1 length of lemma; 3 -veined; without keels.
    Flowers
    Lodicules 2. Anthers 6.
    Fruits
    Caryopsis with adherent pericarp; linear.
    Spikelets
    Male spikelets distinct from female; linear (1-1.4mm wide); 7-9 mm long. Male spikelet glumes absent. Male spikelet lemma 5 -veined; muticous. Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 20 mm long; falling entire.
    Male
    Male spikelets distinct from female; linear (1-1.4mm wide); 7-9 mm long. Male spikelet glumes absent. Male spikelet lemma 5 -veined; muticous.
    Distribution
    Europe: eastern. Asia-temperate: Caucasus. North America: western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, south-central USA, and southeast USA.
    Reference
    Oryzeae. Dore 1993.

    Images

    Distribution

    Native to:

    Alabama, Alberta, British Columbia, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, North Carolina, North Dakota, Nova Scotia, Ohio, Ontario, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Tennessee, Vermont, Virginia, Wisconsin

    Introduced into:

    Baltic States, Belarus, California, Central European Rus, East European Russia, Northwest European R, Ukraine

    Zizania aquatica L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Munro, Gen Wm. [s.n.], Canada K000307619
    Munro, Col Wm. [s.n.], Canada K000307618

    First published in Sp. Pl.: 991 (1753)

    Accepted by

    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Fedorov, A.A. (ed.) (1999). Flora of Russia. The European part and bordering regions 1: 1-546. A.A. Balkema, Rotterdam, Broekfield.
    • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.

    Literature

    Kew Backbone Distributions
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • Fedorov, A.A. (ed.) (1999). Flora of Russia. The European part and bordering regions 1: 1-546. A.A. Balkema, Rotterdam, Broekfield.
    • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.

    Sources

    GrassBase - The Online World Grass Flora
    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.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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 2019. 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