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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis breviligulata (Fernald) Saarela

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

    [GB]
    Habit
    Perennial; caespitose. Rhizomes elongated. Culms erect, or geniculately ascending; 70-100 cm long. Ligule an eciliate membrane; 1-3 mm long; scarious. Leaf-blades convolute; 20-60 cm long; 2-6 mm wide; stiff. Leaf-blade surface ribbed; scaberulous. Leaf-blade apex filiform.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear; truncate or rounded at the ends; 15-30 cm long. Primary panicle branches appressed. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 10-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 0.2 length of lemma (2mm).
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 10-15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 0.2 length of lemma (2mm).
    Glume
    Glumes persistent; similar; exceeding apex of florets, or reaching apex of florets. Lower glume lanceolate; 10-15 mm long; 1 length of upper glume; chartaceous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acuminate. Upper glume lanceolate; 10-15 mm long; 1-1.3 length of adjacent fertile lemma; chartaceous; 1-keeled; 3 -veined. Upper glume surface asperulous. Upper glume apex acuminate.
    Florets
    Fertile lemma lanceolate; 10-12 mm long; chartaceous; keeled; 5 -veined. Lemma surface scaberulous. Lemma apex acute. Palea 0.9 length of lemma; 2-4 -veined. Palea keels approximate. Rhachilla extension 0.25-0.33 length of fertile floret; pilose; hairy throughout but longer above.
    Flowers
    Anthers 3. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    North America: eastern Canada, north-central USA, northeast USA, and southeast USA.
    Reference
    Aveneae. WDC.

    Distribution

    Native to:

    British Columbia, California, Connecticut, Delaware, Illinois, Indiana, Labrador, Maine, Maryland, Masachusettes, Michigan, Minnesota, New Brunswick, New Hampshire, New York, Newfoundland, North Carolina, Nova Scotia, Ohio, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., South Carolina, Vermont, Virginia, Washington, Wisconsin

    Accepted Infraspecifics

    Synonyms

    Other Data

    Calamagrostis breviligulata (Fernald) Saarela appears in other Kew resources:

    Bibliography

    First published in PhytoKeys 87: 86 (2017)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

    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.

    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 2020. 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 2020. 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