1. Family: Poaceae Barnhart
    1. Genus: Brachyelytrum P.Beauv.
      1. Brachyelytrum aristosum (Michx.) Trel., Branner & Coville

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

    [GB]
    Habit
    Perennial. Rhizomes short. Culms 28.5-96 cm long; 0.6-1 mm diam. Culm-internodes 3.9-15.5 cm long; distally glabrous, or pubescent. Culm-nodes pubescent. Leaves cauline. Leaf-sheaths 3.2-10.4 cm long; pubescent. Ligule an eciliate membrane; 1.8-2.5 mm long. Leaf-blades linear, or lanceolate; 6.9-16.1 cm long; 8-16 mm wide. Leaf-blade venation without cross veins, or with obscure cross veins. Leaf-blade surface pilose; sparsely hairy; hairy on both sides. Leaf-blade margins scabrous; ciliate.
    Inflorescences
    Inflorescence a panicle; comprising 8-55 fertile spikelets. Panicle open; linear, or oblong; 6.6-17.5 cm long; 0.4-0.8 cm wide; bearing many spikelets, or few spikelets. Primary panicle branches 1-7 in number; indistinct the panicle almost racemose, or simple, or sparsely divided. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 9-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pilose.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 9-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pilose.
    Glume
    Glumes persistent; dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.1-0.9 mm long; 0.15-0.3 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 0.6-3 mm long; 0.3-0.6 length of adjacent fertile lemma; membranous; without keels; 1(-3) -veined. Upper glume apex acute.
    Florets
    Fertile lemma elliptic; 9-10 mm long; 0.7-1.4 mm wide; herbaceous; without keel; 5 -veined. Lemma lateral veins obscure. Lemma surface scaberulous; glabrous. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 14-26 mm long overall. Palea tightly convolute around flower; 7.7-11.5 mm long; 2 -veined. Rhachilla extension 4-6.9 mm long.
    Flowers
    Lodicules 2. Anthers 2; 2-3.5 mm long. Stigmas 2.
    Fruits
    Caryopsis with tardily free pericarp; linear; 5.5-7.5 mm long; light brown, or dark brown.
    Distribution
    North America: north-central USA, northeast USA, and southeast USA.
    Reference
    Brachyelytreae. Saarela et al 2004.

    Distribution

    Native to:

    Connecticut, Georgia, Iowa, Maine, Masachusettes, Michigan, Minnesota, New Brunswick, New Hampshire, New Jersey, New York, Newfoundland, North Carolina, Nova Scotia, Ontario, Pennsylvania, Prince Edward I., Québec, Rhode I., Tennessee, Vermont, Virginia, West Virginia, Wisconsin

    Brachyelytrum aristosum (Michx.) Trel., Branner & Coville appears in other Kew resources:

    First published in Rep. (Annual) Arkansas Geol. Surv. 4: 235 (1888 publ. 1891)

    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.
    • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.

    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