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  1. Family: Poaceae Barnhart
    1. Genus: Polypogon Desf.
      1. Polypogon parvulus Roseng., B.R.Arrill. & Izag.

        This species is accepted, and its native range is Uruguay to NE. Argentina.

    [GB]
    Habit
    Annual; caespitose. Basal innovations intravaginal. Culms erect; 5-10 cm long; 2 -noded. Lateral branches lacking. Leaf-sheaths scaberulous; glabrous on surface. Ligule an eciliate membrane; 1.5-2.3 mm long; erose; truncate. Leaf-blades 2 cm long; 1 mm wide. Leaf-blade midrib indistinct. Leaf-blade surface scaberulous; glabrous.
    Inflorescences
    Inflorescence a panicle; embraced at base by subtending leaf. Panicle spiciform; linear; 3-5 cm long. Primary panicle branches 0.5-1 cm long. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform, or linear; 1.5-6 mm long; scaberulous.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 3.5-8 mm long; falling entire; deciduous with the pedicel. Floret callus glabrous.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets cuneate; laterally compressed; 3.5-8 mm long; falling entire; deciduous with the pedicel. Floret callus glabrous.
    Glume
    Glumes similar; exceeding apex of florets; firmer than fertile lemma; recurved at apex. Lower glume lanceolate; 3.5-8 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein spinulose. Lower glume lateral veins absent. Lower glume apex acute; awned; 1 -awned. Lower glume awn 3.5-4.5 mm long. Upper glume lanceolate; 3.5-8 mm long; 2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein spinulose. Upper glume lateral veins absent. Upper glume apex emarginate, or obtuse; awned; 1 -awned. Upper glume awn 3.5-4.5 mm long.
    Florets
    Fertile lemma oblong; 1.8 mm long; cartilaginous; without keel; 5 -veined. Lemma lateral veins excurrent. Lemma surface asperulous. Lemma apex dentate; 3 -fid; truncate. Palea 0.6 mm long; 0.33 length of lemma; hyaline; 0 -veined; without keels.
    Flowers
    Lodicules 2; 0.5 mm long; membranous. Anthers 3; 0.5-0.6 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: southern South America.
    Reference
    Aveneae. Rosengurtt 1996.

    Distribution

    Native to:

    Argentina Northeast, Uruguay

    Synonyms

    Other Data

    Polypogon parvulus Roseng., B.R.Arrill. & Izag. appears in other Kew resources:

    Bibliography

    First published in Gram. Urug.: 33 (1970)

    Accepted by

    • 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.
    • 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