1. Family: Poaceae Barnhart
    1. Genus: Andropogon L.
      1. Andropogon ternarius Michx.

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

    [GB]
    Habit
    Perennial; caespitose. Butt sheaths glabrous, or pilose, or villous. Culms erect; 70-120 cm long. Lateral branches ample. Ligule a ciliolate membrane. Leaf-blades flat, or conduplicate; 2-4 mm wide.
    Inflorescences
    Synflorescence compound; linear. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole. Spatheole linear. Racemes 2; paired; 3-6 cm long. Rhachis fragile at the nodes; plumose on surface; plumose on margins. Rhachis internodes filiform; 6-9 mm long. Rhachis internode tip transverse; cupuliform; with simple rim. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; 4-5 mm long; 0.9 length of fertile spikelet; plumose.
    Sterile
    Companion sterile spikelets represented by single glumes; linear; 1-2 mm long; shorter than fertile. Companion sterile spikelet glumes chartaceous; glabrous; acute.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 5-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; inserted. Companion sterile spikelets represented by single glumes; linear; 1-2 mm long; shorter than fertile. Companion sterile spikelet glumes chartaceous; glabrous; acute.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 5-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; inserted.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of spikelet; membranous; 2-keeled; keeled laterally. Lower glume intercarinal veins absent. Lower glume surface concave. Upper glume linear; membranous; 1-keeled. Upper glume muticous.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; 2 -veined; ciliate on margins. Fertile lemma lanceolate; hyaline; without keel. Lemma apex lobed; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 15-25 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
    Flowers
    Anthers 3.
    Distribution
    North America: north-central USA, south-central USA, and southeast USA.
    Reference
    Andropogoneae. Gr Tex 1993.

    Distribution

    Native to:

    Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Mexico Northeast, Mississippi, Missouri, New Jersey, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia

    Andropogon ternarius Michx. appears in other Kew resources:

    Date Identified Reference Herbarium Specimen Type Status
    Elliott, S. [s.n.], North Carolina K000974848
    Nash, G.V. [473], Florida K000974849

    First published in Fl. Bor.-Amer. 1: 57 (1803)

    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.
    • 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.
    • 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
    • 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.
    • 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
    [A] 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/
    [B] © 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/
    [C] © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0