1. Family: Poaceae Barnhart
    1. Genus: Muhlenbergia Schreb.
      1. Muhlenbergia cuspidata (Torr. ex Hook.) Rydb.

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

    [GB]
    Habit
    Perennial; caespitose. Rootstock evident. Culms erect, or geniculately ascending; 20-40 cm long; wiry. Culm-internodes solid; distally pubescent. Lateral branches sparse. Leaf-sheaths keeled; puberulous. Ligule a ciliolate membrane; 1 mm long; truncate. Leaf-blades 5-10 cm long; 1-1.5 mm wide. Leaf-blade surface puberulous; hairy adaxially. Leaf-blade margins scaberulous.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 5-12 cm long; 0.4 cm wide. Primary panicle branches appressed; bearing spikelets almost to the base. Panicle axis scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1.5 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 0.5 mm long. Upper glume ovate; 1.5 mm long; 0.5 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 0.5 mm long.
    Florets
    Fertile lemma lanceolate; 3 mm long; membranous; without keel; 3 -veined. Lemma midvein scabrous. Lemma surface puberulous; hairy below; hairy on veins. Lemma apex acuminate; mucronate, or awned; 1 -awned. Principal lemma awn 0.5 mm long overall. Palea 1 length of lemma; 2 -veined.
    Flowers
    Lodicules 2; cuneate; fleshy. Anthers 3; 1-1.2 mm long.
    Fruits
    Caryopsis with adherent pericarp; fusiform.
    Distribution
    North America: western Canada, northwest USA, north-central USA, northeast USA, south-central USA, and southeast USA.
    Reference
    Eragrostideae. Fl Pac NW 1994.

    Images

    Distribution

    Native to:

    Alberta, Arkansas, Colorado, Illinois, Indiana, Iowa, Kansas, Kentucky, Manitoba, Michigan, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Dakota, Ohio, Oklahoma, Pennsylvania, Saskatchewan, South Dakota, Tennessee, Virginia, Wisconsin, Wyoming

    Muhlenbergia cuspidata (Torr. ex Hook.) Rydb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Drummond, T [188], USA K000907294

    First published in Bull. Torrey Bot. Club 32: 599 (1905)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    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 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