1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis hieronymi Hack.

        This species is accepted, and its native range is Bolivia to N. Argentina.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 40-60 cm long. Culm-internodes scaberulous. Leaf-sheaths 15-25 cm long; glabrous on surface. Ligule an eciliate membrane; 1.5-2 mm long; erose; obtuse. Leaf-blades flat, or convolute; 20-60 cm long; 1-4.7 mm wide. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong; dense; 10-20 cm long. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.8-4.3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 3.8-4.3 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Glume
    Glumes persistent; similar; shorter than spikelet; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; 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; 3.5-4 mm long; 1.1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume surface asperulous. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; 3.8-4.3 mm long; membranous; without keel; 3 -veined. Lemma midvein ciliolate. Lemma surface pubescent. Lemma apex erose; obtuse; mucronate, or awned; 1 -awned. Principal lemma awn subapical; straight; 1 mm long overall. Palea 1 length of lemma. Palea keels scabrous. Rhachilla extension 1.5-2 mm long; pilose.
    Flowers
    Lodicules 2. Anthers 3; 1.8-2 mm long. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; lanceolate; 1.5-1.8 mm long. Hilum punctiform. Disseminule comprising a floret.
    Distribution
    South America: western South America and southern South America.
    Reference
    Aveneae. Turpe 1995.

    Distribution

    Native to:

    Argentina Northeast, Argentina Northwest, Bolivia

    Calamagrostis hieronymi Hack. appears in other Kew resources:

    First published in Oesterr. Bot. Z. 52: 109 (1902)

    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.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.

    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