1. Family: Poaceae Barnhart
    1. Genus: Glyceria R.Br.
      1. Glyceria borealis (Nash) Batch.

        This species is accepted, and its native range is Subarctic America to NE. Mexico.

    [GB]
    Habit
    Perennial. Rhizomes elongated. Culms geniculately ascending, or decumbent; 60-100 cm long; rooting from lower nodes. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 5-10 mm long; acute. Leaf-blades flat, or conduplicate; 5-15 cm long; 3-5 mm wide. Leaf-blade surface scaberulous; glabrous. Leaf-blade margins scaberulous.
    Inflorescences
    Inflorescence a panicle. Panicle open; linear; 20-45 cm long. Primary panicle branches appressed; 5-10 cm long; bearing 3-12 fertile spikelets on each lower branch. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 6-11 fertile florets; with diminished florets at the apex. Spikelets linear; subterete; 10-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 6-11 fertile florets; with diminished florets at the apex. Spikelets linear; subterete; 10-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume oblong; 2-2.5 mm long; 0.66 length of upper glume; membranous; much thinner on margins; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume oblong; 3 mm long; 0.9 length of adjacent fertile lemma; membranous; with hyaline margins; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse.
    Florets
    Fertile lemma oblong; 3.5 mm long; membranous; much thinner above; without keel; 7 -veined. Lemma lateral veins prominent. Lemma surface scaberulous; rough on veins. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; united; oblong; fleshy; truncate. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; 1.5 mm long. Hilum linear.
    Distribution
    North America: Subarctic, western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, and Mexico.
    Reference
    Meliceae. Fl Pac NW 1994.

    Distribution

    Native to:

    Alaska, Alberta, Arizona, British Columbia, California, Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Labrador, Maine, Manitoba, Masachusettes, Mexico Northeast, Minnesota, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Dakota, Northwest Territorie, Nova Scotia, Ohio, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Dakota, Utah, Vermont, Washington, Wisconsin, Wyoming, Yukon

    Glyceria borealis (Nash) Batch. appears in other Kew resources:

    First published in Proc. Manchester Inst. Arts & Sci. 1: 74 (1900)

    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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.

    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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.

    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 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