1. Family: Poaceae Barnhart
    1. Genus: Danthonia DC.
      1. Danthonia melanathera (Hack.) Bernardello

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

    [GB]
    Habit
    Perennial. Basal innovations intravaginal. Culms erect; 9-32 cm long; 1-3 -noded. Leaf-sheaths pilose. Leaf-sheath oral hairs ciliate; 4 mm long. Ligule a fringe of hairs; 0.5-1 mm long. Leaf-blades 4-8 cm long; 0.8-1 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy.
    Inflorescences
    Inflorescence a panicle, or comprising only a few spikelets; comprising 1-4 fertile spikelets. Peduncle glabrous. Panicle open; linear; 1.9-5.3 cm long; bearing few spikelets. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5-15 mm long; pubescent.
    Spikelets
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 18-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.5 mm long; glabrous. Floret callus evident; 0.9-1.2 mm long; pilose, or bearded. Floret callus hairs 0.4-3.5 mm long.
    Fertile
    Spikelets comprising 4-6 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 18-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 0.5 mm long; glabrous. Floret callus evident; 0.9-1.2 mm long; pilose, or bearded. Floret callus hairs 0.4-3.5 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear, or lanceolate; 15-30 mm long; 1 length of upper glume; membranous; without keels; 5-7 -veined. Lower glume apex acuminate. Upper glume linear, or lanceolate; 12-29 mm long; 1-1.6 length of adjacent fertile lemma; membranous; without keels; 7 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma elliptic; 14-18 mm long; chartaceous; without keel. Lemma surface pilose. Lemma margins ciliate. Lemma hairs 3-4 mm long. Lemma apex lobed; 2 -fid; with lobes 9-13 mm long; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; 13-18 mm long overall; with twisted column. Lateral lemma awns arising on apex of lobes; 4-7 mm long; shorter than principal. Palea lanceolate; 5.5-7.5 mm long; 2 -veined. Palea surface pilose; hairy on back. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; 0.5-1 mm long; fleshy; glabrous, or ciliate. Anthers 3; 0.8-2.3 mm long; retained within floret, or eventually exserted.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 2.2-3 mm long; light brown. Embryo 0.4-0.5 length of caryopsis. Hilum linear; 0.3 length of caryopsis.
    Cleistogene
    Cleistogenes present; in upper sheaths.
    Distribution
    South America: southern South America.
    Reference
    Arundineae. Baezu 1997.

    Distribution

    Native to:

    Argentina Northeast, Argentina Northwest

    Danthonia melanathera (Hack.) Bernardello appears in other Kew resources:

    First published in Kurtziana 10: 249 (1977)

    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