1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis velutina (Nees & Meyen) Steud.

        This species is accepted, and its native range is Chile to W. Argentina.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Culms 10-30 cm long. Leaf-sheaths 3.5-5 cm long; smooth; glabrous on surface. Ligule an eciliate membrane; 2 mm long; pubescent on abaxial surface; acute. Leaf-blades curved; filiform; conduplicate; 4-8 cm long; 1 mm wide; stiff. Leaf-blade surface glabrous. Leaf-blade apex pungent.
    Inflorescences
    Inflorescence a panicle. Panicle spiciform; linear, or lanceolate; 1.5-5 cm long; 0.7-1 cm wide. Spikelets solitary. Fertile spikelets pedicelled. Pedicels bearing a few hairs, or glabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-4.6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.33 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-4.6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.33 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; yellow; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acute. Upper glume lanceolate; 1.3 length of adjacent fertile lemma; membranous; yellow; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume surface asperulous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 3-3.6 mm long; membranous; without keel. Lemma surface scabrous; rough above and on veins. Lemma apex erose; truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.25-0.33 way up back of lemma; geniculate; 5-7 mm long overall; clearly exserted from spikelet; with twisted column. Palea 1 length of lemma. Rhachilla extension 1.1-1.5 mm long; pilose.
    Flowers
    Lodicules 2. Anthers 3; 2 mm long; purple. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; fusiform; 2.5 mm long. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    South America: southern South America.
    Reference
    Aveneae. Fl Pat 1995.

    Distribution

    Native to:

    Argentina Northwest, Argentina South, Chile Central, Chile North, Chile South

    Calamagrostis velutina (Nees & Meyen) Steud. appears in other Kew resources:

    First published in Nomencl. Bot., ed. 2, 1: 251 (1840)

    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
    • 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.

    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 2020. 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 2020. 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