1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum oligosanthes Schult.

        This species is accepted, and its native range is N. America.

    [GB]
    Habit
    Perennial; caespitose. Culms 15-85 cm long. Culm-internodes distally glabrous, or pubescent, or hirsute. Culm-nodes glabrous. Lateral branches ample. Leaves heterophyllous with a basal winter rosette. Leaf-sheaths glabrous on surface, or hispid; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs; 1-4.2 mm long. Leaf-blades lanceolate; 3-14 cm long; 3-12 mm wide. Leaf-blade surface glabrous, or pubescent.
    Inflorescences
    Inflorescence a panicle; terminal and axillary (vernal and autumnal respectively). Axillary inflorescences different from terminal (linear, 1-9 spikelets); enclosed. Panicle open; ovate; 4-13 cm long. Panicle axis glabrous, or puberulous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or obovate; dorsally compressed; obtuse, or subacute; 2.9-4 mm long; 1.2-2.2 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or obovate; dorsally compressed; obtuse, or subacute; 2.9-4 mm long; 1.2-2.2 mm wide; falling entire.
    Glume
    Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.8-2.2 mm long; 0.25-0.5 length of spikelet; membranous; without keels; 1-3 -veined. Lower glume lateral veins absent, or obscure. Lower glume apex obtuse, or acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface glabrous, or pubescent. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 5 -veined; glabrous, or pubescent; obtuse. Palea of lower sterile floret 0.5 length of lemma. Fertile lemma ovate; dorsally compressed; 2.9-4 mm long; indurate; without keel. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, southeast USA, and Mexico.
    Reference
    Paniceae. Gr Texas 1993.

    Images

    Distribution

    Native to:

    Alabama, Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Masachusettes, Mexico Gulf, Mexico Northeast, Mexico Northwest, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Rhode I., Saskatchewan, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

    Introduced into:

    Czechoslovakia

    Panicum oligosanthes Schult. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hall, E. [830], Texas Panicum helleri K000674493
    Heller, A. A. [1759], Texas Panicum helleri K000674495 isotype
    Munro, W. [s.n.], Florida Panicum helleri K000674494
    Carey, J. [s.n.], Pennsylvania Panicum scribnerianum K000674492 Unknown type material

    First published in Mant. 2: 256 (1824)

    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.

    Literature

    Kew Backbone Distributions
    • Danihelka, J. Chrtek, J. & Kaplan, Z. (2012). Checklist of vascular plants of the Czech Republic Preslia. Casopsi Ceské Botanické Spolecnosti 84: 647-811.
    • 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
    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 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