1. Family: Poaceae Barnhart
    1. Genus: Danthonia DC.
      1. Danthonia montevidensis Hack. & Arechav.

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

    [GB]
    Habit
    Perennial; caespitose. Basal innovations extravaginal. Culms erect, or geniculately ascending; 30-60 cm long; 3-7 -noded; disarticulating at the nodes. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs; 0.4 mm long. Leaf-blades filiform; convolute; 10-30 cm long; 1-3 mm wide.
    Inflorescences
    Inflorescence a panicle; comprising 5-30 fertile spikelets. Peduncle 6-28 cm long. Panicle open; elliptic; 4.5-13 cm long; bearing few spikelets. Panicle branches pubescent. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 16-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5-1.5 mm long; bearded. Floret callus hairs 1.5-3 mm long.
    Fertile
    Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 16-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5-1.5 mm long; bearded. Floret callus hairs 1.5-3 mm long.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 16-30 mm long; 1 length of upper glume; membranous; without keels; 5-7 -veined. Lower glume apex acuminate. Upper glume lanceolate; 16-30 mm long; 2.5-3 length of adjacent fertile lemma; membranous; without keels; 5 -veined. Upper glume apex acuminate.
    Florets
    Fertile lemma elliptic; 6.7-10.6 mm long; chartaceous; without keel; 7-9 -veined. Lemma surface pilose; hairy below. Lemma hairs 3.5-4.5 mm long. Lemma apex lobed; 2 -fid; incised 0.5 of lemma length; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; 15-22 mm long overall; with twisted column. Column of lemma awn 0.25 length of limb. Lateral lemma awns arising on apex of lobes; 2-7 mm long; shorter than principal. Palea oblanceolate, or obovate; 3.6-5.5 mm long; 2 -veined. Palea keels 1.3-2 mm apart; ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; 1.5-3.2 mm long; fleshy; glabrous. Anthers 3; 1.5-3.2 mm long.
    Fruits
    Caryopsis with adherent pericarp; obovoid; 1.8-2.4 mm long. Hilum linear.
    Cleistogene
    Cleistogenes present; in lower sheaths.
    Distribution
    South America: Brazil and southern South America.
    Reference
    Arundineae. Fl Entre Rios 1993.

    Images

    Distribution

    Native to:

    Argentina Northeast, Brazil South, Uruguay

    Danthonia montevidensis Hack. & Arechav. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1992 Kummrow, R. [2423], Brazil K000702445
    Jan 1, 1992 Klein [s.n.], Brazil K000702448
    Jan 1, 1992 Rosengurtt [9244], Brazil K000702447
    Oct 1, 1961 illegible [7421], Uruguay K000702568
    Oct 1, 1961 illegible [594], Uruguay K000702569
    Oct 1, 1961 s.coll. [1103], Uruguay K000702566
    Oct 1, 1961 s.coll. [s.n.], Uruguay K000702570
    Oct 1, 1961 s.coll. [s.n.], Uruguay K000702571
    Oct 1, 1961 [Troueors, N?] [1304], Argentina K000702573
    Oct 1, 1960 illegible [s.n.], Argentina K000702567
    Oct 1, 1960 Filippone, F. [5105], Uruguay K000702574
    Silva, J.M. [3274], Brazil K000702444
    Ribas, O.S. [3669], Brazil K000702443
    Rosengurtt [B7757c], Brazil K000702446
    Ryves, T.B. [s.n.], United Kingdom K000702075
    Blake, J.L. [10], Argentina K000702572

    First published in Anales Mus. Nac. Montevideo 1: 369 (1896)

    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
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.

    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