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

        This species is accepted, and its native range is Canada to U.S.A.

    [GB]
    Habit
    Annual. Culms reed-like; 100-300 cm long; spongy. Culm-internodes distally glabrous. Leaf-sheaths glabrous on surface, or pilose; outer margin glabrous. Ligule an eciliate membrane; 3-16 mm long; entire, or erose; truncate. Leaf-blades 20-60 cm long; 3-40 mm wide. Leaf-blade surface glabrous. Leaf-blade margins smooth, or scaberulous.
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence. Inflorescence a panicle. Panicle open; ovate; 24-60 cm long; 20-40 cm wide. Primary panicle branches ascending, or spreading; 3-20 cm long. Sexes segregated; on unisexual branches; with male below. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled. Pedicels tip cupuliform.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 8-33 mm long; falling entire.
    Glume
    Glumes both absent or obscure.
    Florets
    Fertile florets female. Fertile lemma lanceolate, or oblong; 6-30 mm long; coriaceous; pallid; shiny; without keel; 3 -veined. Lemma surface smooth, or scaberulous; rough in lines. Lemma margins interlocking with palea margins. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 18-93 mm long overall. Palea 1 length of lemma; 3 -veined; without keels.
    Flowers
    Lodicules 2. Anthers 6.
    Fruits
    Caryopsis with adherent pericarp.
    Spikelets
    Male spikelets distinct from female; linear; 6-17 mm long. Male spikelet glumes absent. Male spikelet lemma 6-17 mm long; muticous, or awned; with 0-2 mm long awn. Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 8-33 mm long; falling entire.
    Male
    Male spikelets distinct from female; linear; 6-17 mm long. Male spikelet glumes absent. Male spikelet lemma 6-17 mm long; muticous, or awned; with 0-2 mm long awn.
    Distribution
    North America: eastern Canada, northwest USA, north-central USA, and northeast USA.
    Reference
    Oryzeae. Terrell 2002.

    Distribution

    Native to:

    Alabama, Arizona, Arkansas, British Columbia, California, Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Missouri, Montana, Nebraska, New Brunswick, New Hampshire, New York, North Carolina, North Dakota, Nova Scotia, Ohio, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Dakota, Tennessee, Vermont, Washington, West Virginia, Wisconsin

    Introduced into:

    Central European Rus, North Caucasus

    Zizania palustris L. appears in other Kew resources:

    First published in Mant. Pl. 2: 295 (1771)

    Accepted by

    • Seregin, A.P. (2014). Flora of Vladimir Oblast, Russia: grid data analysis: 1-441. KMK schientific press, Moscow.
    • 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.
    • Takhtajan, A.L. (ed.) (2006). Conspectus Florae Caucasi 2: 1-466. Editio Universitatis Petropolitanae.

    Literature

    Kew Backbone Distributions
    • Seregin, A.P. (2014). Flora of Vladimir Oblast, Russia: grid data analysis: 1-441. KMK schientific press, Moscow.
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • Takhtajan, A.L. (ed.) (2006). Conspectus Florae Caucasi 2: 1-466. Editio Universitatis Petropolitanae.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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