1. Family: Poaceae Barnhart
    1. Genus: Deschampsia P.Beauv.
      1. Deschampsia elongata (Hook.) Munro

        This species is accepted, and its native range is Alaska to Mexico, S. South America.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; slender; 25-80 cm long. Leaves mostly basal. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 3-9 mm long; pubescent on abaxial surface; acute, or acuminate. Leaf-blades filiform; conduplicate, or involute; 2-4 cm long; 0.5-1.5 mm wide. Leaf-blade surface smooth, or scaberulous.
    Inflorescences
    Inflorescence a panicle. Panicle open, or contracted; linear; 5-30 cm long. Primary panicle branches appressed, or ascending. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 3-5.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; pilose. Floret callus pilose. Floret callus hairs 0.5 length of lemma.
    Fertile
    Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 3-5.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; pilose. Floret callus pilose. Floret callus hairs 0.5 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; similar to fertile lemma in texture; shiny. Lower glume lanceolate; 3-5.5 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex acuminate. Upper glume elliptic; 3-5.5 mm long; 1.2-2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma oblong; 2.5 mm long; membranous; shiny; without keel; 5 -veined. Lemma surface smooth, or scaberulous. Lemma apex erose; obtuse; awned; 1 -awned. Principal lemma awn dorsal; arising 0.4-0.5 way up back of lemma; straight; 3-4 mm long overall. Palea 1 length of lemma.
    Flowers
    Lodicules 2; membranous. Anthers 3; 0.5 mm long. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    North America: Subarctic, western Canada, northwest USA, southwest USA, and Mexico. South America: southern South America.
    Reference
    Aveneae. Fl Pac NW 1993.

    Images

    Distribution

    Native to:

    Alaska, Alberta, Argentina South, Arizona, British Columbia, California, Chile Central, Chile South, Idaho, Maine, Masachusettes, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southwest, Montana, Nevada, New Mexico, Nunavut, Oregon, South Carolina, Utah, Washington, Wyoming, Yukon

    Introduced into:

    Colorado

    Deschampsia elongata (Hook.) Munro appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Douglas, D. [236], Northern America K000808941
    s.coll. [s.n.] K000808942
    s.coll. [s.n.], California K000808943

    First published in G.Bentham, Pl. Hartw.: 342 (1857)

    Accepted by

    • Ackerfield, J. (2015). Flora of Colorado: 1-818. BRIT Press.
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • 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.

    Literature

    Kew Backbone Distributions
    • Ackerfield, J. (2015). Flora of Colorado: 1-818. BRIT Press.
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • 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.

    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