1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum leibergii (Vasey) Scribn.

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

    [GB]
    Habit
    Perennial. Culms erect; slender; 25-75 cm long. Culm-internodes antrorsely scabrous; distally glabrous, or pilose. Lateral branches sparse. Leaves basal and cauline; heterophyllous with a basal winter rosette. Leaf-sheaths hispid; with tubercle-based hairs. Ligule absent. Leaf-blades erect, or ascending; lanceolate; 6-15 cm long; 7-15 mm wide. Leaf-blade surface hispid; hairy on both sides; with tubercle-based hairs.
    Inflorescences
    Inflorescence a panicle. Panicle open; lanceolate; 8-15 cm long. Primary panicle branches appressed. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 3.7-4 mm long; falling entire. Rhachilla internodes elongated between glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 3.7-4 mm long; falling entire. Rhachilla internodes elongated between glumes.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 0.5 length of spikelet; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface hispid; with tubercle-based hairs. Lower glume apex acute. Upper glume oblong; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume lateral veins prominent. Upper glume surface hispid; with tubercle-based hairs. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; oblong; 1 length of spikelet; membranous; 7 -veined; prominently veined; hispid; with tubercle-based hairs; obtuse. Fertile lemma oblong; dorsally compressed; 3.7-4 mm long; indurate; without keel. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: western Canada, eastern Canada, north-central USA, northeast USA, and south-central USA.
    Reference
    Paniceae. Man US Gr 1997.

    Distribution

    Native to:

    Alberta, Illinois, Indiana, Iowa, Kansas, Kentucky, Manitoba, Michigan, Minnesota, Missouri, Nebraska, New York, North Dakota, Ohio, Ontario, Pennsylvania, Saskatchewan, South Dakota, Wisconsin

    Panicum leibergii (Vasey) Scribn. appears in other Kew resources:

    First published in Bull. Div. Agrostol. U.S.D.A. 8: 6 (1897)

    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.
    • Jones, R.L. (2005). Plant life of Kentucky. An illustrated guide to the vascular flora: 1-833. The universitry press of Kentucky.

    Literature

    Kew Backbone Distributions
    • Jones, R.L. (2005). Plant life of Kentucky. An illustrated guide to the vascular flora: 1-833. The universitry press of Kentucky.
    • 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 2019. 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 2019. 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