1. Family: Poaceae Barnhart
    1. Genus: Muhlenbergia Schreb.
      1. Muhlenbergia torreyana (Schult.) Hitchc.

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

    [GB]
    Habit
    Perennial; caespitose. Rhizomes short; scaly. Culms erect; 30-60 cm long. Culm-internodes distally glabrous. Culm-nodes pubescent. Lateral branches lacking. Leaf-sheaths keeled; smooth, or scaberulous; glabrous on surface. Ligule a ciliolate membrane; 1 mm long. Leaf-blades flat, or conduplicate; 1-3 mm wide. Leaf-blade surface scaberulous; rough on both sides.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong; 10-20 cm long. Primary panicle branches ascending; 5-10 cm long. Panicle axis scaberulous. Panicle branches capillary; scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 1.5-2 mm long; tip widened.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 2 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; 2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 1.5 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.8 mm long; 0.9 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 2 mm long; membranous; without keel; 3 -veined. Lemma surface scaberulous. Lemma apex acuminate; muticous. Palea 1 length of lemma; 2 -veined. Palea surface scaberulous.
    Flowers
    Lodicules 2; cuneate; fleshy. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp; fusiform.
    Distribution
    North America: southeast USA.
    Reference
    Eragrostideae. N Amer Fl 1994.

    Distribution

    Native to:

    Georgia, Maryland, New Jersey, New York, North Carolina, Tennessee

    Extinct in:

    Delaware

    Muhlenbergia torreyana (Schult.) Hitchc. appears in other Kew resources:

    First published in Amer. J. Bot. 21: 136 (1934)

    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

    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