1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis violacea (Wedd.) Hack.

        This species is accepted, and its native range is Peru to NW. Argentina.

    [GB]
    Habit
    Perennial; mat forming. Culms erect; 6-25 cm long. Culm-internodes smooth. Leaf-sheaths smooth. Ligule an eciliate membrane, or a ciliolate membrane; 1.6-3.2 mm long; obtuse, or acute. Leaf-blades conduplicate; 1.5-13 cm long; 2-3 mm wide. Leaf-blade venation with subepidermal sclerenchyma attached to veins below. Leaf-blade surface scabrous; rough on both sides; glabrous, or puberulous. Leaf-blade margins scabrous. Leaf-blade apex acute, or acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 2-5.5 cm long; 0.5-0.8 cm wide. Primary panicle branches 0.8-1 cm long. Panicle axis smooth, or scaberulous; with scattered hairs, or glabrous. Panicle branches pilose. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.8-4.2 mm long; smooth, or scaberulous; pubescent.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5.5-6.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.8-1.6 mm long; 0.25 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5.5-6.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.8-1.6 mm long; 0.25 length of lemma.
    Glume
    Glumes persistent; similar; reaching apex of florets; firmer than fertile lemma. Lower glume lanceolate; 5.5-6.8 mm long; 1.1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface smooth, or scabrous. Lower glume apex obtuse to acuminate. Upper glume lanceolate; 5-6.2 mm long; membranous; purple; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume surface smooth, or scabrous. Upper glume apex obtuse to acuminate.
    Florets
    Fertile lemma lanceolate; 3.8-5.8 mm long; membranous; purple; without keel; 5 -veined. Lemma surface scabrous. Lemma apex dentate; 4 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.33 way up back of lemma; geniculate; 5-8.8 mm long overall; clearly exserted from spikelet; with twisted column. Palea 3-4 mm long. Rhachilla extension 1.4-2.2 mm long; villous; with 2-2.4 mm long hairs.
    Flowers
    Lodicules 2. Anthers 3; linear; 1.6-2 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    South America: western South America and southern South America.
    Reference
    Aveneae. Villav 1996.

    Images

    Distribution

    Native to:

    Argentina Northwest, Bolivia, Peru

    Calamagrostis violacea (Wedd.) Hack. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Mandon, G. [1307], Bolivia K000308432

    First published in O.Buchtien, Contr. Fl. Bolivia 1: 75 (1910)

    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.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    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.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    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 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